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https://github.com/mpv-player/mpv
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MPEG-X spelling
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@14025 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
diego
parent
dc9851c0db
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72cb69a510
@ -183,7 +183,7 @@ DVD subtitles (SPU streams, VOBsub and Closed Captions).
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(MPlayer's Movie Encoder) is a simple movie encoder, designed to encode
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MPlayer-playable movies (see above) to other MPlayer-playable formats (see
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below).
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It encodes to MPEG4 (DivX/XviD), one of the libavcodec codecs and
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It encodes to MPEG-4 (DivX/XviD), one of the libavcodec codecs and
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PCM/\:MP3/\:VBRMP3 audio in 1, 2 or 3\ passes.
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Furthermore it has stream copying abilities, a powerful filter system (crop,
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expand, flip, postprocess, rotate, scale, noise, rgb/\:yuv conversion) and
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@ -2403,7 +2403,7 @@ Select the driver to use as source to overlay on top of X11.
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.TP
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.B xvmc (X11 with \-vc ffmpeg12mc only)
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Video output driver that uses the XvMC (X Video Motion Compensation)
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extension of XFree86 4.x to speed up MPEG1/\:2 and VCR2 decoding.
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extension of XFree86 4.x to speed up MPEG-1/2 and VCR2 decoding.
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.PD 0
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.RSs
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.IPs benchmark
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@ -3322,9 +3322,9 @@ This is not a bug, but a side effect of not decoding at full resolution.
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.br
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3: 1/8 resolution
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.REss
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.IPs "sb=<number> (MPEG2 only)"
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.IPs "sb=<number> (MPEG-2 only)"
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Skip the given number of macroblock rows at the bottom.
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.IPs "st=<number> (MPEG2 only)"
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.IPs "st=<number> (MPEG-2 only)"
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Skip the given number of macroblock rows at the top.
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.IPs vismv=<value>
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vismv:
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@ -3481,7 +3481,7 @@ Try divx4linux codec first, then fall back on others.
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.IPs "\-vc -divxds,-divx,"
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Skip Win32 DivX codecs.
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.IPs "\-vc ffmpeg12,mpeg12,"
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Try libavcodec's MPEG1/\:2 codec, then libmpeg2, then others.
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Try libavcodec's MPEG-1/2 codec, then libmpeg2, then others.
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.RE
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.PD 1
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.
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@ -3949,7 +3949,7 @@ You should see a red, green and blue stripe from top to bottom.
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.
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.TP
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.B lavc[=quality:fps]
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Fast software YV12 to MPEG1 conversion with libavcodec for use with DVB/\:DXR3.
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Fast software YV12 to MPEG-1 conversion with libavcodec for use with DVB/\:DXR3.
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Faster and of better quality than \-vf fame.
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.RSs
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.IPs quality
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@ -3964,7 +3964,7 @@ force output fps (float value) (default: 0, autodetect based on height)
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.
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.TP
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.B fame\ \ \
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Fast software YV12 to MPEG1 conversion with libfame for use with DVB/\:DXR3.
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Fast software YV12 to MPEG-1 conversion with libfame for use with DVB/\:DXR3.
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.
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.TP
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.B dvbscale[=aspect]
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@ -4410,7 +4410,7 @@ Sum of Absolute Difference threshold, default is 64.
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.
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.TP
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.B softpulldown
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This filter works only correct with MEncoder and acts on the MPEG2 flags
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This filter works only correct with MEncoder and acts on the MPEG-2 flags
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used for soft 3:2 pulldown (soft telecine).
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If you want to use the ivtc or detc filter on movies that are partly soft
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telecined, inserting this filter before them should make them more reliable.
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@ -5336,7 +5336,7 @@ H.263
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.IPs h263p
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H.263+
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.IPs mpeg4
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MPEG4 (DivX 4/5)
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MPEG-4 (DivX 4/5)
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.IPs msmpeg4
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DivX 3
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.IPs msmpeg4v2
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@ -5348,9 +5348,9 @@ Windows Media Video, version 2 (AKA WMV8)
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.IPs rv10\
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an old RealVideo codec
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.IPs mpeg1video
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MPEG1 video
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MPEG-1 video
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.IPs mpeg2video
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MPEG2 video
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MPEG-2 video
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.IPs huffyuv
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HuffYUV
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.IPs asv1\
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@ -5421,7 +5421,7 @@ maximum number of B-frames between non-B-frames:
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.IPs 0
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no B-frames (default)
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.IPs 0\-2
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sane range for MPEG4
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sane range for MPEG-4
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.RE
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.PD 1
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.
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@ -5506,7 +5506,7 @@ slightly smaller files but less precise seeking.
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0 is equivalent to 1, which makes every frame a keyframe.
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Values >300 are not recommended as the quality might be bad depending upon
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decoder, encoder and luck.
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For a strict MPEG1/\:2/\:4 compliance this would have to be <=132.
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For a strict MPEG-1/2/4 compliance this would have to be <=132.
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.
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.TP
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.B sc_threshold=<-1000000\-1000000>
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@ -5647,7 +5647,7 @@ minimum bitrate in kbit/\:sec (pass\ 1/\:2)
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.TP
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.B vrc_buf_size=<value>
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buffer size in kbit (pass\ 1/\:2).
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For MPEG1/\:2 this also sets the vbv buffer size, use 327 for VCD,
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For MPEG-1/2 this also sets the vbv buffer size, use 327 for VCD,
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917 for SVCD and 1835 for DVD.
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.
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.TP
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@ -5850,7 +5850,7 @@ strict standard compliance
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disabled (default)
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.IPs 1
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Only recommended if you want to feed the output into the
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MPEG4 reference decoder.
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MPEG-4 reference decoder.
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.IPs -1
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Allows non-standard YV12 HuffYUV encoding (20% smaller files, but cannot be
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played by the official HuffYUV codec).
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@ -6592,7 +6592,7 @@ Decide whether to use MPEG or H.263 quantizers on a frame-by-frame basis
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.br
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.I WARNING:
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This will generate an illegal bitstream, and most likely not be decodable
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by any MPEG4 decoder besides libavcodec or XviD.
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by any MPEG-4 decoder besides libavcodec or XviD.
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.br
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.I WARNING:
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As of XviD-1.0.x, this option is no longer available.
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@ -6652,7 +6652,7 @@ you are doing.
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.br
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.I WARNING:
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This will generate an illegal bitstream, and will not be
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decodable by ISO-MPEG4 decoders except DivX/\:libavcodec/\:XviD.
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decodable by ISO-MPEG-4 decoders except DivX/\:libavcodec/\:XviD.
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.br
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.I WARNING:
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This will also store a fake DivX version in the file so the bug
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@ -6704,7 +6704,7 @@ own risks!
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.
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.TP
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.B (no)qpel
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MPEG4 uses a half pixel precision for its motion search by default.
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MPEG-4 uses a half pixel precision for its motion search by default.
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The standard proposes a mode where encoders are allowed to use quarter
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pixel precision.
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This option usually results in a sharper image.
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@ -6893,7 +6893,7 @@ the Display Aspect Ratio).
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PAR is the ratio of the width and height of a single pixel.
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So both are related like this: DAR = PAR * (width/height).
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.br
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MPEG4 defines 5 pixel aspect ratios and one extended
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MPEG-4 defines 5 pixel aspect ratios and one extended
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one, giving the opportunity to specify a specific pixel aspect
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ratio.
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5 standard modes can be specified:
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@ -19,12 +19,12 @@ The most important ones above all:
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<itemizedlist>
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<listitem><simpara>
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<emphasis role="bold">MPEG1</emphasis> (<emphasis role="bold">VCD</emphasis>) and
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<emphasis role="bold">MPEG2</emphasis> (<emphasis role="bold">DVD</emphasis>) video
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<emphasis role="bold">MPEG-1</emphasis> (<emphasis role="bold">VCD</emphasis>) and
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<emphasis role="bold">MPEG-2</emphasis> (<emphasis role="bold">DVD</emphasis>) video
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</simpara></listitem>
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<listitem><simpara>
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native decoders for <emphasis role="bold">DivX ;-), OpenDivX (DivX4),
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DivX 5 (Pro), 3ivX, M$ MPEG4</emphasis> v1, v2 and other MPEG4 variants
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DivX 5 (Pro), 3ivX, M$ MPEG-4</emphasis> v1, v2 and other MPEG-4 variants
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</simpara></listitem>
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<listitem><simpara>
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native decoder for <emphasis role="bold">Windows Media Video 7/8</emphasis>
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@ -85,7 +85,7 @@ This section contains information about the DivX4 and DivX5 codecs of
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Their first available alpha version was OpenDivX 4.0 alpha 47 and 48.
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Support for this was included in <application>MPlayer</application> in the
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past, and built by default. We also used its postprocessing code to
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optionally enhance visual quality of MPEG1/2 movies. Now we use our own,
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optionally enhance visual quality of MPEG-1/2 movies. Now we use our own,
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for all file types.
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</para>
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@ -203,7 +203,7 @@ DivX.com DivX4/5 libraries!
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</para>
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<para>
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It contains a lot of nice codecs, especially important are the MPEG4 variants:
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It contains a lot of nice codecs, especially important are the MPEG-4 variants:
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DivX3, DivX4, DivX5, Windows Media Video 7/8 (WMV1/WMV2). Also a very interesting one
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is the WMA decoder.
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</para>
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@ -353,11 +353,11 @@ automatically.
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<sect3 id="mpeg12">
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<title>MPEG 1/2 video</title>
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<title>MPEG-1/2 video</title>
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<para>
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MPEG1 and MPEG2 are decoded by the multiplatform native <systemitem
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MPEG-1 and MPEG-2 are decoded by the multiplatform native <systemitem
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class="library">libmpeg2</systemitem> library, whose source code is
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included in <application>MPlayer</application>. We handle buggy MPEG 1/2
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included in <application>MPlayer</application>. We handle buggy MPEG-1/2
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video files by catching <systemitem>Signal 11</systemitem>
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(<systemitem>segmentation fault</systemitem>), and quickly
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reinitializing the codec, continuing exactly from where the failure
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@ -61,7 +61,7 @@ many other Unices, and <emphasis role="bold">non-x86</emphasis> CPUs, see
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QT/MOV/MP4, FLI, RM, NuppelVideo, yuv4mpeg, FILM, RoQ, PVA, Matroska files, supported by
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many native, XAnim, RealPlayer, and Win32 DLL codecs. You can watch
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<emphasis role="bold">VideoCD, SVCD, DVD, 3ivx, RealMedia, Sorenson, Theora</emphasis>, and
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<emphasis role="bold">MPEG4 (DivX)</emphasis> movies too. Another big
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<emphasis role="bold">MPEG-4 (DivX)</emphasis> movies too. Another big
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feature of <application>MPlayer</application> is the wide range of
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supported output drivers. It works with X11, Xv, DGA, OpenGL, SVGAlib,
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fbdev, AAlib, libcaca, DirectFB, but you can use GGI and SDL (and this way all
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@ -93,7 +93,7 @@ Encoder) is a simple movie encoder, designed to encode
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<application>MPlayer</application>-playable movies
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(<emphasis role="bold">AVI/ASF/OGG/DVD/VCD/VOB/MPG/MOV/VIV/FLI/RM/NUV/NET/PVA</emphasis>)
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to other <application>MPlayer</application>-playable formats (see below). It
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can encode with various codecs, like <emphasis role="bold">MPEG4 (DivX4)</emphasis>
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can encode with various codecs, like <emphasis role="bold">MPEG-4 (DivX4)</emphasis>
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(1 or 2 passes), <systemitem class="library">libavcodec</systemitem>,
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<emphasis role="bold">PCM/MP3/VBR MP3</emphasis>
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audio.
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@ -1420,7 +1420,7 @@ movie on any CD. Check if you have libmp3lame installed properly.
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<qandaentry>
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<question><para>
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I can't encode an ASF file to AVI/MPEG4 (DivX) because it uses 1000 fps.
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I can't encode an ASF file to AVI/MPEG-4 (DivX) because it uses 1000 fps.
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</para></question>
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<answer><para>
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Because ASF uses variable frame rate but AVI uses a fixed one, you
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@ -7,24 +7,24 @@
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It is important to clarify a common mistake. When people see a file with a
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<filename>.AVI</filename> extension, they immediately conclude that it is
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not an MPEG file. That is not true. At least not entirely. Contrary to
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popular belief such a file <emphasis>can</emphasis> contain MPEG1 video.
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popular belief such a file <emphasis>can</emphasis> contain MPEG-1 video.
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</para>
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<para>
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You see, a <emphasis role="bold">codec</emphasis> is not the same as a
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<emphasis role="bold">file format</emphasis>.
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Examples of video <emphasis role="bold">codecs</emphasis> are: MPEG1, MPEG2,
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MPEG4 (DivX), Indeo5, 3ivx.
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Examples of video <emphasis role="bold">codecs</emphasis> are: MPEG-1, MPEG-2,
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MPEG-4 (DivX), Indeo5, 3ivx.
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Examples of file <emphasis role="bold">formats</emphasis> are: MPG, AVI, ASF.
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</para>
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<para>
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In theory, you can put an OpenDivX video and MP3 audio
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into an <emphasis role="bold">MPG format file</emphasis>. However, most
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players will not play it, since they expect MPEG1 video and MP2 audio (unlike
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players will not play it, since they expect MPEG-1 video and MP2 audio (unlike
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<emphasis role="bold">AVI</emphasis>, <emphasis role="bold">MPG</emphasis>
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does not have the necessary fields to describe its video and audio streams).
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Or you might put MPEG1 video into an AVI file.
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Or you might put MPEG-1 video into an AVI file.
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<ulink url="http://ffmpeg.org/">FFmpeg</ulink> and
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<link linkend="mencoder"><application>MEncoder</application></link> can create these files.
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</para>
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@ -43,7 +43,7 @@ MPEG files come in different guises:
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<itemizedlist>
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<listitem><simpara>
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MPG: This is the most <emphasis role="bold">basic</emphasis> form of the
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MPEG file formats. It contains MPEG1 video, and MP2 (MPEG-1 layer 2) or
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MPEG file formats. It contains MPEG-1 video, and MP2 (MPEG-1 layer 2) or
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rarely MP1 audio.
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</simpara></listitem>
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<listitem><simpara>
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@ -56,7 +56,7 @@ MPEG files come in different guises:
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<listitem><simpara>
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VOB: This is the MPEG file format on <emphasis role="bold">DVDs</emphasis>.
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It is the same as MPG, plus the capability to contain subtitles or non-MPEG
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(AC3) audio. It contains encoded MPEG2 video and usually AC3 audio, but DTS,
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(AC3) audio. It contains encoded MPEG-2 video and usually AC3 audio, but DTS,
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MP2 and uncompressed LPCM are allowed, too. <emphasis role="bold">Read the
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<link linkend="dvd">DVD</link> section</emphasis>!
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</simpara></listitem>
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@ -85,7 +85,7 @@ option.
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<para>
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Designed by Microsoft, <emphasis role="bold">AVI (Audio Video Interleaved)</emphasis>
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is a widespread multipurpose format currently used mostly for MPEG4 (DivX and DivX4)
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is a widespread multipurpose format currently used mostly for MPEG-4 (DivX and DivX4)
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video. It has many known drawbacks and shortcomings (for example in streaming). It
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supports one video stream and 0 to 99 audio streams and can be as big as
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2GB, but there exists an extension allowing bigger files called
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@ -183,8 +183,8 @@ v2.0 files :). Note that ASF files nowadays come with the extension
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<para>
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These formats were designed by Apple and can contain any codec, CBR or VBR.
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They usually have a <filename>.QT</filename> or <filename>.MOV</filename>
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extension. Note that since the MPEG4 group chose QuickTime as the recommended
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file format for MPEG4, their MOV files come with a <filename>.MPG</filename> or
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extension. Note that since the MPEG-4 group chose QuickTime as the recommended
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file format for MPEG-4, their MOV files come with a <filename>.MPG</filename> or
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<filename>.MP4</filename> extension (Interestingly the video and audio
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streams in these files are real MPG and AAC files. You can even extract them with the
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<option>-dumpvideo</option> and <option>-dumpaudio</option> options.).
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@ -261,7 +261,7 @@ its <filename>.NUV</filename> files (only NuppelVideo 5.0). Those files can
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contain uncompressed YV12, YV12+RTJpeg compressed, YV12 RTJpeg+lzo
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compressed, and YV12+lzo compressed frames.
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<application>MPlayer</application> decodes (and also <emphasis role="bold">encodes</emphasis>
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them with <application>MEncoder</application> to MPEG4 (DivX)/etc!) them all.
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them with <application>MEncoder</application> to MPEG-4 (DivX)/etc!) them all.
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Seeking works.
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</para>
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</sect3>
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@ -12,7 +12,7 @@ This began a year ago... I have tried lots of players under Linux
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<application>xanim</application>, <application>avifile</application>,
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<application>xmmp</application>) but they all have some problem. Mostly with
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special files or with audio/video sync. Most of them are unable to play both
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MPEG1, MPEG2 and AVI (DivX) files. Many players have image quality or speed
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MPEG-1, MPEG-2 and AVI (DivX) files. Many players have image quality or speed
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problems too. So I've decided to write/modify one...
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</para></blockquote><para>A'rpi, 2001</para>
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@ -151,7 +151,7 @@ You need a fairly recent system. On Linux, 2.4.x kernels are recommended.
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</simpara></listitem>
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<listitem><simpara>
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this codec is the <emphasis role="bold">fastest codec available</emphasis> for
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DivX/3/4/5 and other MPEG4 types. Recommended!
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DivX/3/4/5 and other MPEG-4 types. Recommended!
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</simpara></listitem>
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</itemizedlist>
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</para></listitem>
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@ -15,7 +15,7 @@ encoding with <application>MEncoder</application>.
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</para>
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<sect1 id="menc-feat-mpeg4">
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<title>Encoding 2-pass MPEG4 ("DivX")</title>
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<title>Encoding 2-pass MPEG-4 ("DivX")</title>
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<para>
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The name comes from the fact that this method encodes the file <emphasis>twice</emphasis>.
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@ -31,7 +31,7 @@ net.
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<example>
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<title>copy audio track</title>
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<para>
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2-pass encode of a DVD to an MPEG4 ("DivX") AVI while copying
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2-pass encode of a DVD to an MPEG-4 ("DivX") AVI while copying
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the audio track.
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<screen>
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mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac copy -o <replaceable>movie.avi</replaceable>
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@ -43,7 +43,7 @@ mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac copy -o <replacea
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<example>
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<title>encode audio track</title>
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<para>
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2-pass encode of a DVD to an MPEG4 ("DivX") AVI while encoding
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2-pass encode of a DVD to an MPEG-4 ("DivX") AVI while encoding
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the audio track to MP3.
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<screen>
|
||||
mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac mp3lame -lameopts vbr=3 -o <replaceable>movie.avi</replaceable>
|
||||
@ -60,14 +60,14 @@ mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac mp3lame -lameopts
|
||||
files. It's probably useful only with
|
||||
<link linkend="ffmpeg"><systemitem class="library">libavcodec</systemitem></link>'s
|
||||
<emphasis>mpeg1video</emphasis> codec, because players - except
|
||||
<application>MPlayer</application> - expect MPEG1 video, and MPEG1 layer 2 (MP2)
|
||||
<application>MPlayer</application> - expect MPEG-1 video, and MPEG-1 layer 2 (MP2)
|
||||
audio streams in MPEG files.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This feature is not very useful right now, aside that it probably has many bugs,
|
||||
but the more importantly because <application>MEncoder</application> currently
|
||||
cannot encode MPEG1 layer 2 (MP2) audio, which all other players expect in MPEG files.
|
||||
cannot encode MPEG-1 layer 2 (MP2) audio, which all other players expect in MPEG files.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -124,7 +124,7 @@ them. This section is about <emphasis role="bold">copying</emphasis>.
|
||||
<listitem><para>
|
||||
<emphasis role="bold">Video stream</emphasis> (option <option>-ovc copy</option>):
|
||||
nice stuff can be done :) Like, putting (not converting!) FLI or VIVO or
|
||||
MPEG1 video into an AVI file! Of course only
|
||||
MPEG-1 video into an AVI file! Of course only
|
||||
<application>MPlayer</application> can play such files :) And it probably
|
||||
has no real life value at all. Rationally: video stream copying can be
|
||||
useful for example when only the audio stream has to be encoded (like,
|
||||
@ -210,13 +210,13 @@ You can encode to the following codecs (more or less up to date):
|
||||
H.263+
|
||||
</entry></row>
|
||||
<row><entry>mpeg4</entry><entry>
|
||||
ISO standard MPEG4 (DivX 5, XVID compatible)
|
||||
ISO standard MPEG-4 (DivX 5, XVID compatible)
|
||||
</entry></row>
|
||||
<row><entry>msmpeg4</entry><entry>
|
||||
pre-standard MPEG4 variant by MS, v3 (AKA DivX3)
|
||||
pre-standard MPEG-4 variant by MS, v3 (AKA DivX3)
|
||||
</entry></row>
|
||||
<row><entry>msmpeg4v2</entry><entry>
|
||||
pre-standard MPEG4 by MS, v2 (used in old asf files)
|
||||
pre-standard MPEG-4 by MS, v2 (used in old asf files)
|
||||
</entry></row>
|
||||
<row><entry>wmv1</entry><entry>
|
||||
Windows Media Video, version 1 (AKA WMV7)
|
||||
@ -228,10 +228,10 @@ You can encode to the following codecs (more or less up to date):
|
||||
an old RealVideo codec
|
||||
</entry></row>
|
||||
<row><entry>mpeg1video</entry><entry>
|
||||
MPEG1 video
|
||||
MPEG-1 video
|
||||
</entry></row>
|
||||
<row><entry>mpeg2video</entry><entry>
|
||||
MPEG2 video
|
||||
MPEG-2 video
|
||||
</entry></row>
|
||||
<row><entry>huffyuv</entry><entry>
|
||||
lossless compression
|
||||
@ -291,7 +291,7 @@ The explanation of the <option>-mf</option> option is in the man page.
|
||||
|
||||
<informalexample>
|
||||
<para>
|
||||
Creating an MPEG4 file from all the JPEG files in the current directory:
|
||||
Creating an MPEG-4 file from all the JPEG files in the current directory:
|
||||
<screen>
|
||||
mencoder mf://*.jpg -mf type=jpg:w=800:h=600:fps=25 -ovc lavc -lavcopts vcodec=mpeg4 -oac copy -o <replaceable>output.avi</replaceable>
|
||||
</screen>
|
||||
@ -300,7 +300,7 @@ mencoder mf://*.jpg -mf type=jpg:w=800:h=600:fps=25 -ovc lavc -lavcopts vcodec=m
|
||||
|
||||
<informalexample>
|
||||
<para>
|
||||
Creating an MPEG4 file from some JPEG files in the current directory:
|
||||
Creating an MPEG-4 file from some JPEG files in the current directory:
|
||||
<screen>
|
||||
mencoder mf://<replaceable>frame001.jpg,frame002.jpg</replaceable> -mf type=jpg:w=800:h=600:fps=25 -ovc lavc -lavcopts vcodec=mpeg4 -oac copy -o <replaceable>output.avi</replaceable>
|
||||
</screen>
|
||||
@ -415,7 +415,7 @@ mencoder <replaceable>movie.mpg</replaceable> -ifo <replaceable>movie.ifo</repla
|
||||
<sect1 id="aspect">
|
||||
<title>Preserving aspect ratio</title>
|
||||
<para>
|
||||
DVDs and SVCDs (i.e. MPEG1/2) files contain an aspect ratio value, which
|
||||
DVDs and SVCDs (i.e. MPEG-1/2) files contain an aspect ratio value, which
|
||||
describes how the player should scale the video stream, so humans won't
|
||||
have egg heads (ex.: 480x480 + 4:3 = 640x480). However when encoding to AVI
|
||||
(DivX) files, you have be aware that AVI headers don't store this value.
|
||||
@ -426,10 +426,10 @@ way!
|
||||
<para>There is</para>
|
||||
|
||||
<para>
|
||||
MPEG4 has an unique feature: the video stream can contain its needed aspect
|
||||
ratio. Yes, just like MPEG1/2 (DVD, SVCD) and H.263 files. Regretfully, there are
|
||||
MPEG-4 has an unique feature: the video stream can contain its needed aspect
|
||||
ratio. Yes, just like MPEG-1/2 (DVD, SVCD) and H.263 files. Regretfully, there are
|
||||
<emphasis role="bold">no</emphasis> video players outside which support this
|
||||
attribute of MPEG4, except <application>MPlayer</application>.
|
||||
attribute of MPEG-4, except <application>MPlayer</application>.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -519,7 +519,7 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
|
||||
</sect1>
|
||||
|
||||
<sect1 id="menc-feat-dvd-mpeg4">
|
||||
<title>Making a high quality MPEG4 ("DivX") rip of a DVD movie</title>
|
||||
<title>Making a high quality MPEG-4 ("DivX") rip of a DVD movie</title>
|
||||
|
||||
<para>
|
||||
One frequently asked question is "How do I make the highest quality DVD
|
||||
@ -529,14 +529,14 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
|
||||
|
||||
<para>
|
||||
This question is perhaps at least somewhat wrongly posed. After all, if
|
||||
you don't care about file size, why not simply copy the MPEG2 video
|
||||
you don't care about file size, why not simply copy the MPEG-2 video
|
||||
stream from the DVD whole? Sure, your AVI will end up being 5GB, give
|
||||
or take, but if you want the best quality and don't care about size,
|
||||
this is certainly your best option.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
In fact, the reason you want to transcode a DVD into MPEG4 is
|
||||
In fact, the reason you want to transcode a DVD into MPEG-4 is
|
||||
specifically because you <emphasis role="bold">do</emphasis> care about
|
||||
file size.
|
||||
</para>
|
||||
@ -666,7 +666,7 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37,
|
||||
<para>
|
||||
<application>MPlayer</application> provides a crop detection filter that
|
||||
will determine the crop rectangle (<option>-vf cropdetect</option>).
|
||||
Because MPEG4 uses 16x16 macroblocks, you'll want to make sure that each
|
||||
Because MPEG-4 uses 16x16 macroblocks, you'll want to make sure that each
|
||||
dimension of the video you're encoding is a multiple of 16 or else you
|
||||
will be degrading quality, especially at lower bitrates. You can do this
|
||||
by rounding the width and height of the crop rectangle down to the nearest
|
||||
|
||||
@ -1734,7 +1734,7 @@ Configure should detect your DVB card. If it did not, force detection with
|
||||
<formalpara>
|
||||
<title>USAGE</title>
|
||||
<para>
|
||||
Hardware decoding (playing standard MPEG1/2 files) can be done with this command:
|
||||
Hardware decoding (playing standard MPEG-1/2 files) can be done with this command:
|
||||
</para>
|
||||
</formalpara>
|
||||
|
||||
@ -1743,7 +1743,7 @@ Hardware decoding (playing standard MPEG1/2 files) can be done with this command
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Software decoding or transcoding different formats to MPEG1 can be achieved using
|
||||
Software decoding or transcoding different formats to MPEG-1 can be achieved using
|
||||
a command like this:
|
||||
</para>
|
||||
<para><screen>
|
||||
@ -1758,14 +1758,14 @@ NTSC. You <emphasis role="bold">must</emphasis> rescale for other heights by add
|
||||
<option>-vf</option> option. DVB cards accept various widths, like 720, 704,
|
||||
640, 512, 480, 352 etc and do hardware scaling in horizontal direction, so you
|
||||
do not need to scale horizontally in most cases. For a 512x384 (aspect 4:3)
|
||||
MPEG4 (DivX) try:
|
||||
MPEG-4 (DivX) try:
|
||||
</para>
|
||||
|
||||
<para><screen>mplayer -ao mpegpes -vo mpegpes -vf scale=512:576</screen></para>
|
||||
|
||||
<para>If you have a widescreen movie and you do not want to scale it to full height,
|
||||
you can use the <option>expand=w:h</option> filter to add black bands. To view a
|
||||
640x384 MPEG4 (DivX), try:
|
||||
640x384 MPEG-4 (DivX), try:
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -1774,7 +1774,7 @@ you can use the <option>expand=w:h</option> filter to add black bands. To view a
|
||||
</para>
|
||||
|
||||
<para>
|
||||
If your CPU is too slow for a full size 720x576 MPEG4 (DivX), try downscaling:
|
||||
If your CPU is too slow for a full size 720x576 MPEG-4 (DivX), try downscaling:
|
||||
</para>
|
||||
|
||||
<para>
|
||||
@ -1805,7 +1805,7 @@ In order to play non-25fps movies on a PAL TV or with a slow CPU, add the
|
||||
</para>
|
||||
|
||||
<para>
|
||||
To keep the aspect ratio of MPEG4 (DivX) files and get the optimal scaling
|
||||
To keep the aspect ratio of MPEG-4 (DivX) files and get the optimal scaling
|
||||
parameters (hardware horizontal scaling and software vertical scaling
|
||||
while keeping the right aspect ratio), use the new dvbscale filter:
|
||||
</para>
|
||||
@ -1944,7 +1944,7 @@ mailing list. Please remember that the list language is English.
|
||||
<para>
|
||||
In the future you may expect the ability to display OSD and subtitles using
|
||||
the native OSD feature of DVB cards, as well as more fluent playback of
|
||||
non-25fps movies and realtime transcoding between MPEG2 and MPEG4 (partial
|
||||
non-25fps movies and realtime transcoding between MPEG-2 and MPEG-4 (partial
|
||||
decompression).
|
||||
</para>
|
||||
</sect3>
|
||||
@ -2045,8 +2045,8 @@ rate of the movie. norm = 0 (default) does not change the current norm.
|
||||
<option><replaceable>device</replaceable></option> = device number to use if you have more than one em8300
|
||||
card.
|
||||
Any of these options may be left out.
|
||||
<option>:prebuf:sync</option> seems to work great when playing MPEG4 (DivX) movies. People
|
||||
have reported problems using the prebuf option when playing MPEG1/2 files. You
|
||||
<option>:prebuf:sync</option> seems to work great when playing MPEG-4 (DivX) movies. People
|
||||
have reported problems using the prebuf option when playing MPEG-1/2 files. You
|
||||
might want to try running without any options first, if you have sync problems,
|
||||
or DVD subtitle problems, give <option>:sync</option> a try.
|
||||
</para></listitem>
|
||||
@ -2073,8 +2073,8 @@ This does not work with digital audio output (<option>-ac hwac3</option>).
|
||||
<varlistentry>
|
||||
<term><option>-vf lavc/fame</option></term>
|
||||
<listitem><para>
|
||||
To watch non-MPEG content on the em8300 (i.e. MPEG4 (DivX) or RealVideo)
|
||||
you have to specify an MPEG1 video filter such as
|
||||
To watch non-MPEG content on the em8300 (i.e. MPEG-4 (DivX) or RealVideo)
|
||||
you have to specify an MPEG-1 video filter such as
|
||||
<systemitem class="library">libavcodec</systemitem> (lavc) or
|
||||
<systemitem class="library">libfame</systemitem> (fame). At
|
||||
the moment lavc is both faster and gives better image quality, it is suggested
|
||||
@ -2093,10 +2093,10 @@ becomes stable. For now all we can do is accept this for a fact.
|
||||
<varlistentry>
|
||||
<term><option>-vf expand=-1:-1:-1:-1:1</option></term>
|
||||
<listitem><para>
|
||||
Although the DXR3 driver can put some OSD onto the MPEG1/2/4 video, it has
|
||||
Although the DXR3 driver can put some OSD onto the MPEG-1/2/4 video, it has
|
||||
much lower quality than <application>MPlayer</application>'s traditional OSD,
|
||||
and has several refresh problems as well. The command line above will firstly
|
||||
convert the input video to MPEG4 (this is mandatory, sorry), then apply an
|
||||
convert the input video to MPEG-4 (this is mandatory, sorry), then apply an
|
||||
expand filter which won't expand anything (-1: default), but apply the normal
|
||||
OSD onto the picture (that's what the "1" at the end does).
|
||||
</para></listitem>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user