mirror of https://github.com/mpv-player/mpv
man page review part XII
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13692 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
diego
parent
700019dcb4
commit
b3c9e16cf0
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@ -2061,7 +2061,7 @@ Use the _NETWM_STATE_BELOW hint if available.
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Use the _NETWM_STATE_FULLSCREEN hint if available.
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.IPs layer
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Use the _WIN_LAYER hint with the default layer.
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.IPs layer=<0..15>
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.IPs layer=<0...15>
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Use the _WIN_LAYER hint with the given layer number.
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.IPs netwm
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Force NETWM style.
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@ -3024,7 +3024,7 @@ completely and +60dB equals a gain of 1000).
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.br
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sc: Enable soft clipping.
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.REss
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.IPs pan[=n:l01:l02:..l10:l11:l12:...ln0:ln1:ln2:...]
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.IPs pan[=n:l01:l02:...l10:l11:l12:...ln0:ln1:ln2:...]
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Mixes channels arbitrarily, see DOCS/\:HTML/\:en/\:devices.html#audio-dev for details.
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.RSss
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n: number of input channels (1\-6)
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@ -3229,7 +3229,7 @@ checks to detect damaged bitstreams.
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.IPs gray\
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grayscale only decoding (a bit faster than with color)
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.IPs "idct=<0\-99> (see \-lavcopts)"
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For best decoding quality use the same idct algorithm for decoding and encoding.
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For best decoding quality use the same IDCT algorithm for decoding and encoding.
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This may come at a price in accuracy, though.
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.IPs lowres=<number>
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Decode at lower resolutions.
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@ -5179,7 +5179,7 @@ debug level
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.
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.
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.SS lavc (\-lavcopts)
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Many lavc options are very specialized and tersely documented.
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Many libavcodec (lavc for short) options are tersely documented.
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Read the source for full details.
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.PP
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.I EXAMPLE:
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@ -5191,14 +5191,14 @@ Read the source for full details.
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.
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.TP
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.B acodec=<value>
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Audio codec (default: mp2):
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audio codec (default: mp2)
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.PD 0
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.RSs
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.IPs mp2
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.IPs mp2\ \
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MPEG Layer 2
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.IPs mp3
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.IPs mp3\ \
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MPEG Layer 3
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.IPs ac3
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.IPs ac3\ \
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AC3
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.IPs adpcm_ima_wav
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IMA Adaptive PCM (4bits per sample, 4:1 compression)
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@ -5207,7 +5207,7 @@ IMA Adaptive PCM (4bits per sample, 4:1 compression)
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.
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.TP
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.B abitrate=<value>
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Audio bitrate in kBit (default 224).
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audio bitrate in kbps (default: 224)
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.
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.TP
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.B atag=<value>
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@ -5215,7 +5215,7 @@ Use the specified Windows audio format tag (e.g.\& atag=0x55).
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.
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.TP
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.B bit_exact
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Use only bit exact algorithms (except (i)dct).
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Use only bit exact algorithms (except (I)DCT).
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Additionally bit_exact disables several optimizations and thus
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should only be used for regression tests, which need binary
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identical files even if the encoder version changes.
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@ -5230,7 +5230,7 @@ May have a slight negative effect on motion estimation.
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.
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.TP
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.B vcodec=<value>
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Use the specified codec (default: mpeg4):
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Employ the specified codec (default: mpeg4).
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.PD 0
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.RSs
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.IPs mjpeg
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@ -5247,11 +5247,11 @@ DivX 4/\:5
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DivX 3
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.IPs msmpeg4v2
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MS MPEG4v2
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.IPs wmv1
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.IPs wmv1\
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Windows Media Video, version 1 (AKA WMV7)
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.IPs wmv2
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.IPs wmv2\
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Windows Media Video, version 2 (AKA WMV8)
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.IPs rv10
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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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@ -5259,11 +5259,11 @@ MPEG1 video
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MPEG2 video
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.IPs huffyuv
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HuffYUV
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.IPs asv1
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.IPs asv1\
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ASUS Video v1
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.IPs asv2
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.IPs asv2\
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ASUS Video v2
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.IPs ffv1
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.IPs ffv1\
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FFmpeg's lossless video codec
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.RE
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.PD 1
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@ -5280,20 +5280,20 @@ resulting in lower quality and some decoders will not be able to decode it).
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Recommended for normal mpeg4/\:mpeg1video encoding (default).
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.IPs 3
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Recommended for h263(p)/\:msmpeg4.
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The reason for preferring 3 over 2 is that 2 could lead to overflows
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(this will be fixed for h263(p) by changing the quantizer per MB in
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the future, msmpeg4 cannot be fixed as it does not support that).
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The reason for preferring 3 over 2 is that 2 could lead to overflows.
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(This will be fixed for h263(p) by changing the quantizer per MB in
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the future, msmpeg4 cannot be fixed as it does not support that.)
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.RE
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.
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.TP
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.B lmin=<0.01\-255.0>
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Minimum lagrange multiplier for ratecontrol, you probably want it to be
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Minimum Lagrange multiplier for ratecontrol, you probably want it to be
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equal to or lower than vqmin (default: 2.0).
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.RE
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.
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.TP
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.B lmax=<0.01\-255.0>
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maximum lagrange multiplier for ratecontrol (default: 31.0)
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maximum Lagrange multiplier for ratecontrol (default: 31.0)
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.RE
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.
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.TP
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@ -5304,7 +5304,7 @@ A lower value means better quality but larger files (default: 0 (disabled)).
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.
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.TP
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.B vqmax=<1\-31>
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maximum quantizer (pass\ 1/\:2) 10\-31 should be a sane range (default: 31)
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Maximum quantizer (pass\ 1/\:2), 10\-31 should be a sane range (default: 31).
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.
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.TP
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.B mbqmin=<1\-31>
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@ -5333,10 +5333,6 @@ sane range for MPEG4
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.TP
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.B vme=<0\-5>
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motion estimation method.
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.br
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.I NOTE:
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0\-3 currently ignores the amount of Bits spent,
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so quality may be low.
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Available methods are:
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.PD 0
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.RSs
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@ -5355,10 +5351,17 @@ EPZS: size=1 diamond, size can be adjusted with the *dia options
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X1 (experimental, currently aliased to EPZS)
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.RE
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.PD 1
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.sp 1
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.RS
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.br
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.I NOTE:
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0\-3 currently ignores the amount of bits spent,
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so quality may be low.
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.RE
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.
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.TP
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.B me_range=<0\-9999>
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motion estimation search range, 0 (default) means unlimited
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motion estimation search range (default: 0 (unlimited))
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.
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.TP
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.B mbd=<0\-2>
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@ -5368,11 +5371,11 @@ This is slow but results in better quality and file size.
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.PD 0
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.RSs
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.IPs 0
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use mbcmp (default)
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Use mbcmp (default).
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.IPs 1
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select the MB mode which needs the fewest bits (=vhq)
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Select the MB mode which needs the fewest bits (=vhq).
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.IPs 2
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select the MB mode which has the best rate distortion
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Select the MB mode which has the best rate distortion.
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.RE
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.PD 1
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.
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@ -5400,14 +5403,14 @@ Does absolutely nothing at the moment.
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.
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.TP
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.B keyint=<0\-300>
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maximum interval between keyframes in frames.
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maximum interval between keyframes in frames (default: 250 or one
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keyframe every ten seconds in a 25fps movie).
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Keyframes are needed for seeking as seeking is only possible to a keyframe but
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keyframes need more space than other frames so larger numbers here mean
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slightly smaller files, but less precise seeking, 0 means no keyframes.
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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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(default: 250 or one keyframe every ten seconds in a 25fps movie)
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.
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.TP
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.B sc_threshold=<-1000000\-1000000>
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@ -5420,12 +5423,15 @@ no scene changes are detected (default 0).
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.TP
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.B vb_strategy=<0\-1>
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strategy to choose between I/\:P/\:B-frames (pass\ 2):
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.PD 0
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.RSs
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.IPs 0
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always use the maximum number of B-frames (default)
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Always use the maximum number of B-frames (default).
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.IPs 1
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avoid B-frames in high motion scenes (will cause bitrate misprediction)
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Avoid B-frames in high motion scenes.
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This will cause bitrate misprediction.
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.RE
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.PD 1
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.
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.TP
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.B vpass=<1\-3>
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@ -5484,8 +5490,8 @@ change individual frame type and PSNR little bit more (up to 0.03dB).
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.
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.TP
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.B aspect=<x/\:y>
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Store movie aspect internally, just like MPEG files.
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Much nicer solution than rescaling, because quality isn't decreased.
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Store movie aspect internally, just like with MPEG files.
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Much nicer than rescaling, because quality is not decreased.
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Only MPlayer will play these files correctly, other players will display
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them with wrong aspect.
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The aspect parameter can be given as a ratio or a floating point number.
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@ -5509,16 +5515,18 @@ always on.
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.
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.TP
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.B vbitrate=<value>
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Specify bitrate (pass\ 1/\:2).
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Warning: 1kBit = 1000 Bits.
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Specify bitrate (pass\ 1/\:2) (default: 800).
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.br
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.I WARNING:
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1kBit = 1000 Bits
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.PD 0
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.RSs
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.IPs 4\-16000
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(in kbit)
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.IPs 16001\-24000000
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(in bit)
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.IPs 800
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default
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.RE
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.PD 1
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.
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.TP
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.B vratetol=<value>
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@ -5577,40 +5585,39 @@ I/\:B-frame quantizer = P-frame quantizer * v{b|i}_qfactor + v{b|i}_qoffset
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.br
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else
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.br
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do normal ratecontrol (dont lock to next P-frame quantizer) and
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do normal ratecontrol (do not lock to next P-frame quantizer) and
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set q= -q * v{b|i}_qfactor + v{b|i}_qoffset
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.
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.TP
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.B \
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Tip: To do constant quantizer encoding with different quantizers for
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.br
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.I HINT:
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To do constant quantizer encoding with different quantizers for
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I/\:P- and B-frames you can use:
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lmin= <ip_quant>:lmax= <ip_quant>:vb_qfactor= <b_quant/\:ip_quant>
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lmin= <ip_quant>:lmax= <ip_quant>:vb_qfactor= <b_quant/\:ip_quant>.
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.
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.TP
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.B vqblur=<0.0\-1.0> (pass 1)
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Quantizer blur, larger values will average the quantizer more over
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time (slower change).
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Quantizer blur (default: 0.5), larger values will average the
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quantizer more over time (slower change).
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.PD 0
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.RSs
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.IPs 0.0
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qblur disabled
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.IPs 0.5
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(default)
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Quantizer blur disabled.
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.IPs 1.0
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average the quantizer over all previous frames
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Average the quantizer over all previous frames.
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.RE
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.PD 1
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.
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.TP
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.B vqblur=<0.0\-99.0> (pass 2)
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Quantizer gaussian blur, larger values will average the quantizer more
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over time (slower change) (default: 0.5).
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Quantizer gaussian blur (default: 0.5), larger values will average
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the quantizer more over time (slower change).
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.
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.TP
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.B vqcomp=<value>
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quantizer compression, depends upon vrc_eq (pass\ 1/\:2) (default: 0.5)
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Quantizer compression, depends upon vrc_eq (pass\ 1/\:2) (default: 0.5).
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.
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.TP
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.B vrc_eq=<equation>
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main ratecontrol equation (pass\ 1/\:2):
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main ratecontrol equation (pass\ 1/\:2)
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.RE
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.RSs
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.IPs 1\ \ \ \
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@ -5624,7 +5631,10 @@ with qcomp 0.5 or something like that (default)
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.RE
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.PP
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.RS
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infix operators: +,-,*,/,^
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infix operators:
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.RE
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.RSs
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.IPs +,-,*,/,^
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.RE
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.PP
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.RS
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@ -5634,7 +5644,7 @@ variables:
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.IPs tex\ \
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texture complexity
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.IPs iTex,pTex
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intra, non intra texture complexity
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intra, non-intra texture complexity
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.IPs avgTex
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average texture complexity
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.IPs avgIITex
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@ -5642,9 +5652,9 @@ average intra texture complexity in I-frames
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.IPs avgPITex
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average intra texture complexity in P-frames
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.IPs avgPPTex
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average non intra texture complexity in P-frames
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average non-intra texture complexity in P-frames
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.IPs avgBPTex
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average non intra texture complexity in B-frames
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average non-intra texture complexity in B-frames
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.IPs mv\ \ \
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Bits used for motion vectors
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.IPs fCode
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|
@ -5658,9 +5668,9 @@ temporal complexity
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.IPs qComp
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qcomp from the command line
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.IPs "isI, isP, isB"
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is 1 if picture type is I/\:P/\:B else 0
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Is 1 if picture type is I/\:P/\:B else 0.
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.IPs Pi,E\
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see your favorite math book
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See your favorite math book.
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.RE
|
||||
.PP
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.RS
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|
|
@ -5680,15 +5690,17 @@ is 1 if a==b, 0 otherwise
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|||
.
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.TP
|
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.B vrc_override=<options>
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User specified quality for specific parts (ending, credits, ..) (pass\ 1/\:2).
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User specified quality for specific parts (ending, credits, ...) (pass\ 1/\:2).
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The options are <start-frame>, <end-frame>, <quality>[/\:<start-frame>,
|
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<end-frame>, <quality>[/\:...]]:
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs "quality (2\-31)"
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quantizer
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.IPs "quality (-500\-0)"
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quality correction in %
|
||||
.RE
|
||||
.PD 1
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||||
.
|
||||
.TP
|
||||
.B vrc_init_cplx=<0\-1000>
|
||||
|
|
@ -5696,93 +5708,96 @@ initial complexity (pass\ 1)
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|||
.
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||||
.TP
|
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.B vqsquish=<0,1>
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||||
specify how to keep the quantizer between qmin and qmax (pass\ 1/\:2):
|
||||
Specify how to keep the quantizer between qmin and qmax (pass\ 1/\:2).
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.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
use clipping
|
||||
Use clipping.
|
||||
.IPs 1
|
||||
use a nice differentiable function (default)
|
||||
Use a nice differentiable function (default).
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B vlelim=<-1000\-1000>
|
||||
Sets single coefficient elimination threshold for luminance.
|
||||
Negative values will also consider the dc coefficient (should be at least -4
|
||||
Negative values will also consider the DC coefficient (should be at least -4
|
||||
or lower for encoding at quant=1):
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
disabled (default)
|
||||
.IPs -4
|
||||
(JVT recommendation)
|
||||
JVT recommendation
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B vcelim=<-1000\-1000>
|
||||
Sets single coefficient elimination threshold for chrominance.
|
||||
Negative values will also consider the dc coefficient (should be at least -4
|
||||
Negative values will also consider the DC coefficient (should be at least -4
|
||||
or lower for encoding at quant=1):
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
disabled (default)
|
||||
.IPs 7
|
||||
(JVT recommendation)
|
||||
JVT recommendation
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B vstrict=<-1,0,1>
|
||||
strict standard compliance
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
disabled (default)
|
||||
.IPs 1
|
||||
only recommended if you want to feed the output into the MPEG4 reference
|
||||
decoder
|
||||
Only recommended if you want to feed the output into the
|
||||
MPEG4 reference decoder.
|
||||
.IPs -1
|
||||
allows non-standard YV12 huffyuv encoding (20% smaller files, but cannot be
|
||||
played by the official huffyuv codec)
|
||||
Allows non-standard YV12 HuffYUV encoding (20% smaller files, but cannot be
|
||||
played by the official HuffYUV codec).
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B vdpart\
|
||||
data partitioning.
|
||||
Data partitioning.
|
||||
Adds 2 Bytes per video packet, improves error-resistance when transferring over
|
||||
unreliable channels (eg.\& streaming over the internet)
|
||||
unreliable channels (e.g.\& streaming over the internet).
|
||||
Each video packet will be encoded in 3 separate partitions:
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs "1. MVs"
|
||||
(movement)
|
||||
movement
|
||||
.IPs "2. DC coefficients"
|
||||
(low res picture)
|
||||
low res picture
|
||||
.IPs "3. AC coefficients"
|
||||
(details)
|
||||
details
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B \
|
||||
.RS
|
||||
MV & DC are most important, loosing them looks far worse than loosing
|
||||
the AC and the 1. & 2. partition.
|
||||
(MV&DC) are far smaller than the 3. partition (AC) meaning that errors
|
||||
will hit the AC partition much more often than the MV&DC partitions.
|
||||
(MV & DC) are far smaller than the 3. partition (AC) meaning that errors
|
||||
will hit the AC partition much more often than the MV & DC partitions.
|
||||
Thus, the picture will look better with partitioning than without,
|
||||
as without partitioning an error will trash AC/\:DC/\:MV equally.
|
||||
.RE
|
||||
.
|
||||
.TP
|
||||
.B vpsize=<0\-10000>
|
||||
video packet size, improves error-resistance (also see vdpart):
|
||||
.B vpsize=<0\-10000> (also see vdpart)
|
||||
Video packet size, improves error-resistance.
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
.IPs 0\ \ \ \
|
||||
disabled (default)
|
||||
.IPs 100-1000
|
||||
good choice
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B ss\ \ \ \ \
|
||||
|
|
@ -5794,21 +5809,21 @@ grayscale only encoding (faster)
|
|||
.
|
||||
.TP
|
||||
.B vfdct=<0\-10>
|
||||
dct algorithm:
|
||||
DCT algorithm
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
automatically select a good one (default)
|
||||
Automatically select a good one (default).
|
||||
.IPs 1
|
||||
fast integer
|
||||
.IPs 2
|
||||
accurate integer
|
||||
.IPs 3
|
||||
mmx
|
||||
MMX
|
||||
.IPs 4
|
||||
mlib
|
||||
.IPs 5
|
||||
altivec
|
||||
AltiVec
|
||||
.IPs 6
|
||||
floating point AAN
|
||||
.RE
|
||||
|
|
@ -5816,22 +5831,22 @@ floating point AAN
|
|||
.
|
||||
.TP
|
||||
.B idct=<0\-99>
|
||||
idct algorithm.
|
||||
IDCT algorithm
|
||||
.br
|
||||
.I NOTE:
|
||||
To the best of our knowledge all these IDCTs do pass the IEEE1180 tests.
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
automatically select a good one (default)
|
||||
Automatically select a good one (default).
|
||||
.IPs 1
|
||||
jpeg reference integer
|
||||
JPEG reference integer
|
||||
.IPs 2
|
||||
simple
|
||||
.IPs 3
|
||||
simplemmx
|
||||
.IPs 4
|
||||
libmpeg2mmx (inaccurate, DON'T USE for encoding with keyint >100)
|
||||
libmpeg2mmx (inaccurate, do not use for encoding with keyint >100)
|
||||
.IPs 5
|
||||
ps2
|
||||
.IPs 6
|
||||
|
|
@ -5839,7 +5854,7 @@ mlib
|
|||
.IPs 7
|
||||
arm
|
||||
.IPs 8
|
||||
altivec
|
||||
AltiVec
|
||||
.IPs 9
|
||||
sh4
|
||||
.RE
|
||||
|
|
@ -5859,13 +5874,15 @@ Be careful, overly large values can cause disastrous things.
|
|||
.br
|
||||
.I WARNING:
|
||||
Large values might look good on some monitors but may look horrible
|
||||
on other monitors:
|
||||
on other monitors.
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0.0
|
||||
.IPs 0.0\ \
|
||||
disabled (default)
|
||||
.IPs 0.0\-0.3
|
||||
sane range
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B dark_mask=<0.0\-1.0>
|
||||
|
|
@ -5881,17 +5898,19 @@ Be careful, overly large values can cause disastrous things.
|
|||
.br
|
||||
.I WARNING:
|
||||
Large values might look good on some monitors but may look horrible
|
||||
on other monitors / TV / TFT:
|
||||
on other monitors / TV / TFT.
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0.0
|
||||
.IPs 0.0\ \
|
||||
disabled (default)
|
||||
.IPs 0.0\-0.3
|
||||
sane range
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B tcplx_mask=<0.0\-1.0>
|
||||
temporal complexity masking (default: 0.0 (disabled))
|
||||
Temporal complexity masking (default: 0.0 (disabled)).
|
||||
Imagine a scene with a bird flying across the whole scene; tcplx_mask
|
||||
will raise the quantizers of the bird's macroblocks (thus decreasing their
|
||||
quality), as the human eye usually does not have time to see all the bird's
|
||||
|
|
@ -5916,18 +5935,22 @@ the sky and the house.
|
|||
.I HINT:
|
||||
Crop any black borders completely as they will reduce the quality
|
||||
of the macroblocks (also applies without scplx_mask).
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0.0
|
||||
.IPs 0.0\ \
|
||||
disabled (default)
|
||||
.IPs 0.0\-0.5
|
||||
sane range
|
||||
.RE
|
||||
.PD 1
|
||||
.sp 1
|
||||
.RS
|
||||
.I NOTE:
|
||||
This setting does not have the same effect as using a custom matrix that
|
||||
would compress high frequencies harder, as scplx_mask will reduce the
|
||||
quality of P blocks even if only DC is changing.
|
||||
The result of scplx_mask will probably not look as good.
|
||||
.RE
|
||||
.
|
||||
.TP
|
||||
.B p_mask=<0.0\-1.0> (also see vi_qfactor)
|
||||
|
|
@ -5947,7 +5970,7 @@ average.
|
|||
.
|
||||
.TP
|
||||
.B ildct\ \
|
||||
use interlaced dct
|
||||
Use interlaced DCT.
|
||||
.
|
||||
.TP
|
||||
.B ilme\ \ \
|
||||
|
|
@ -5955,10 +5978,11 @@ Use interlaced motion estimation (mutually exclusive with qpel).
|
|||
.
|
||||
.TP
|
||||
.B alt\ \ \ \
|
||||
use alternative scantable
|
||||
Use alternative scantable.
|
||||
.
|
||||
.TP
|
||||
.B top=<-1\-1>\ \ \
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs -1
|
||||
automatic
|
||||
|
|
@ -5967,25 +5991,28 @@ bottom field first
|
|||
.IPs 1
|
||||
top field first
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B format=<value>
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs YV12
|
||||
.IPs YV12\
|
||||
default
|
||||
.IPs 444P
|
||||
.IPs 444P\
|
||||
for ffv1
|
||||
.IPs 422P
|
||||
for huffyuv, lossless jpeg and ffv1
|
||||
.IPs 422P\
|
||||
for HuffYUV, lossless JPEG and ffv1
|
||||
.IPs 411P,YVU9
|
||||
for lossless jpeg and ffv1
|
||||
for lossless JPEG and ffv1
|
||||
.IPs BGR32
|
||||
for lossless jpeg and ffv1
|
||||
for lossless JPEG and ffv1
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B pred\ \ \
|
||||
(for huffyuv)
|
||||
(for HuffYUV)
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
|
|
@ -6021,9 +6048,9 @@ mean prediction
|
|||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
vlc coding (golomb rice)
|
||||
vlc coding (Golomb-Rice)
|
||||
.IPs 1
|
||||
arithmetic coding (cabac)
|
||||
arithmetic coding (CABAC)
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
|
|
@ -6042,7 +6069,9 @@ large context model
|
|||
.TP
|
||||
.B qpel\ \ \
|
||||
Use quarter pel motion compensation (mutually exclusive with ilme).
|
||||
Hint: This seems only useful for high bitrate encodings.
|
||||
.br
|
||||
.I HINT:
|
||||
This seems only useful for high bitrate encodings.
|
||||
.
|
||||
.TP
|
||||
.B mbcmp=<0\-2000>
|
||||
|
|
@ -6054,11 +6083,11 @@ sum of absolute differences, fast (default)
|
|||
.IPs "1 (SSE)"
|
||||
sum of squared errors
|
||||
.IPs "2 (SATD)"
|
||||
sum of absolute hadamard transformed differences
|
||||
sum of absolute Hadamard transformed differences
|
||||
.IPs "3 (DCT)"
|
||||
sum of absolute dct transformed differences
|
||||
sum of absolute DCT transformed differences
|
||||
.IPs "4 (PSNR)"
|
||||
sum of the squared quantization errors (don't use, low quality)
|
||||
sum of squared quantization errors (avoid, low quality)
|
||||
.IPs "5 (BIT)"
|
||||
number of bits needed for the block
|
||||
.IPs "6 (RD)"
|
||||
|
|
@ -6072,13 +6101,13 @@ sum of squared vertical differences
|
|||
.IPs "10 (NSSE)"
|
||||
noise preserving sum of squared differences
|
||||
.IPs +256\
|
||||
use chroma too, doesn't work (correctly) with B-frames currently
|
||||
Also use chroma, currently does not work (correctly) with B-frames.
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
.TP
|
||||
.B ildctcmp=<0\-2000>
|
||||
Sets the comparison function for interlaced dct decision
|
||||
Sets the comparison function for interlaced DCT decision
|
||||
(see mbcmp for available comparison functions).
|
||||
.
|
||||
.TP
|
||||
|
|
@ -6106,7 +6135,7 @@ video rather than filtering it away before encoding.
|
|||
.
|
||||
.TP
|
||||
.B predia=<-99\-6>
|
||||
Diamond type and size for motion estimation pre pass
|
||||
diamond type and size for motion estimation pre-pass
|
||||
.
|
||||
.TP
|
||||
.B dia=<-99\-6>
|
||||
|
|
@ -6124,7 +6153,7 @@ Big normal diamonds are better quality than shape-adaptive diamonds.
|
|||
Shape-adaptive diamonds are a good tradeoff between speed and quality.
|
||||
.br
|
||||
.I NOTE:
|
||||
The sizes of the normal diamonds and shape adaptive ones don't have
|
||||
The sizes of the normal diamonds and shape adaptive ones do not have
|
||||
the same meaning.
|
||||
.RSs
|
||||
.IPs -3
|
||||
|
|
@ -6157,14 +6186,14 @@ normal size=2 diamond
|
|||
.B trell\ \
|
||||
Trellis searched quantization.
|
||||
This will find the optimal encoding for each 8x8 block.
|
||||
Trellis searched quantization is quite simple a optimal quantization in the PSNR
|
||||
vs bitrate sense (assuming that there would be no rounding errors introduced
|
||||
by the IDCT, which is obviously not the case) it simply finds a block for
|
||||
the minimum of error and lambda*bits.
|
||||
Trellis searched quantization is quite simply an optimal quantization in
|
||||
the PSNR versus bitrate sense (Assuming that there would be no rounding
|
||||
errors introduced by the IDCT, which is obviously not the case.).
|
||||
It simply finds a block for the minimum of error and lambda*bits.
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs lambda
|
||||
quantization parameter (QP) dependant constant
|
||||
quantization parameter (QP) dependent constant
|
||||
.IPs bits\
|
||||
amount of bits needed to encode the block
|
||||
.IPs error
|
||||
|
|
@ -6190,14 +6219,14 @@ lambda of each macroblock
|
|||
.
|
||||
.TP
|
||||
.B last_pred=<0\-99>
|
||||
Amount of motion predictors from the previous frame
|
||||
amount of motion predictors from the previous frame
|
||||
.PD 0
|
||||
.RSs
|
||||
.IPs 0
|
||||
(default)
|
||||
.IPs a
|
||||
will use 2a+1 x 2a+1 macroblock square of motion vector predictors from the
|
||||
previous frame
|
||||
Will use 2a+1 x 2a+1 macroblock square of motion vector predictors from the
|
||||
previous frame.
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
|
|
@ -6217,7 +6246,7 @@ always
|
|||
.
|
||||
.TP
|
||||
.B subq=<1\-8>
|
||||
subpel refinement quality (for qpel) (default: 8 (high quality)).
|
||||
subpel refinement quality (for qpel) (default: 8 (high quality))
|
||||
.br
|
||||
.I NOTE:
|
||||
This has a significant effect on speed.
|
||||
|
|
@ -6234,10 +6263,10 @@ Use MPEG quantizers instead of H.263.
|
|||
.
|
||||
.TP
|
||||
.B aic\ \ \ \
|
||||
ac prediction (=advanced intra prediction for H.263+)
|
||||
ac prediction (advanced intra prediction for H.263+)
|
||||
.br
|
||||
.I NOTE:
|
||||
vqmin should be 8 or larger for AIC H.263+.
|
||||
vqmin should be 8 or larger for H.263+ AIC.
|
||||
.
|
||||
.TP
|
||||
.B aiv\ \ \ \
|
||||
|
|
@ -6246,7 +6275,7 @@ alternatice inter vlc for H.263+
|
|||
.TP
|
||||
.B umv\ \ \ \
|
||||
unlimited MVs (H.263+ only)
|
||||
Allow encoding of abritarily long MVs.
|
||||
Allows encoding of abritarily long MVs.
|
||||
.
|
||||
.TP
|
||||
.B ibias=<-256\-256>
|
||||
|
|
@ -6271,7 +6300,7 @@ A more positive bias (-32 \- -16 instead of -64) seems to improve the PSNR.
|
|||
.
|
||||
.TP
|
||||
.B nr=<0\-100000>
|
||||
noise reduction, 0 is disabled
|
||||
Noise reduction, 0 means disabled.
|
||||
.
|
||||
.TP
|
||||
.B qns=<0\-3>
|
||||
|
|
@ -6288,11 +6317,11 @@ startpoint for the iterative search.
|
|||
.IPs 0
|
||||
disabled (default)
|
||||
.IPs 1
|
||||
only lower the absolute value of coefficients
|
||||
Only lower the absolute value of coefficients.
|
||||
.IPs 2
|
||||
only change coefficients before the last non zero coefficient + 1
|
||||
Only change coefficients before the last non-zero coefficient + 1.
|
||||
.IPs 3
|
||||
try all
|
||||
Try all.
|
||||
.RE
|
||||
.PD 1
|
||||
.
|
||||
|
|
@ -6322,7 +6351,7 @@ If you specify vcodec=mpeg2video this value can be 8, 9, 10 or 11.
|
|||
.TP
|
||||
.B cgop\ \ \
|
||||
Close all GOPs.
|
||||
Currently it doesn't work (yet).
|
||||
Currently it does not work.
|
||||
.
|
||||
.
|
||||
.SS nuv (\-nuvopts)
|
||||
|
|
@ -6735,7 +6764,7 @@ allocation
|
|||
(default: 5).
|
||||
.
|
||||
.TP
|
||||
.B container_frame_overhead=<0..>
|
||||
.B container_frame_overhead=<0...>
|
||||
Specifies a frame average overhead per frame, in bytes.
|
||||
Most of the time users express their target bitrate for video w/o taking
|
||||
care of the video container overhead.
|
||||
|
|
|
|||
Loading…
Reference in New Issue