mirror of https://github.com/mpv-player/mpv
101 lines
3.4 KiB
Plaintext
101 lines
3.4 KiB
Plaintext
Some words about Siemens-DVB card support. by A'rpi
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==========================================
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Requirements:
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~~~~~~~~~~~~~
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- Siemens DVB-S card or compatible (Technotrend, Galaxis, Hauppauge, etc)
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See www.linuxtv.org for details and download latest driver there.
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- MPlayer-CVS, FFmpeg libavcodec CVS are recommended for speed & postprocessing.
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- Fast CPU - at least 1GHz recommended for software transcoding (DivX -> MPEG).
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How to enable?
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~~~~~~~~~~~~~~
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'./configure' should detect it. If it did not, force detection with
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./configure --enable-dvb
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If you have ost headers at a non-standard path, set the path with
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./configure --with-extraincdir=<your DVB source dir>/ost/include
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Then compile and install as usual:
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make
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make install
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How to use?
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~~~~~~~~~~~
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Hardware decoding: (play standard MPEG1/2 files)
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mplayer -ao mpegpes -vo mpegpes file.mpg|vob
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Software decoding/transcoding anything to MPEG1:
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mplayer -ao mpegpes -vo mpegpes -vop lavc yourfile.ext
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mplayer -ao mpegpes -vo mpegpes -vop fame,expand yourfile.ext
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Note: The DVB card only supports height 288 and 576 for PAL, 240 and 480 for
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NTSC. You MUST rescale for other heights by adding 'scale=w:h' to the '-vop'
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option, where 'w:h' are the width and height you want. Note that DVB cards accept
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various widths, like 720, 704, 640, 512, 480, 352 etc and do hardware scaling in
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horizontal direction, so you do not need to scale horizontally in most cases.
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For example, for a 512x384 (aspect 4:3) DivX try:
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mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=512:576
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If you have a widescreen movie and you do not want to scale it to full height,
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you can use the 'expand=w:h' plugin to add black bands.
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For example, to view a 640x384 DivX, try:
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mplayer -ao mpegpes -vo mpegpes -vop lavc,expand=640:576 file.avi
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If your CPU is too slow to view a 720x576 DivX in full size, try to downscale:
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mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=352:576 file.avi
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If it is still slow, try to downscale vertically, too:
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mplayer -ao mpegpes -vo mpegpes -vop lavc,scale=352:288 file.avi
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Do you want OSD, and subtitles? Use the expand feature of the OSD plugin!
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So, instead of 'expand=w:h' or 'expand=w:h:x:y', use 'expand=w:h:x:y:1' (the 5th
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parameter ':1' at the end will enable OSD rendering). You may want to move the
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image up a bit to get bigger black zone for subtitles. And you may want to move
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subtitles up, if they are out of your TV screen, use the '-subpos <0-100>' switch
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('-subpos 80' is perfect for me).
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In order to play non-25fps movies on a PAL TV or with a slow CPU, add the
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'-framedrop' option.
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How to keep the aspect ratio for DivX files?
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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To get the optimal scaling parameters (hardware X scaling, software Y scaling,
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while keeping the right aspect ratio), use the new 'dvbscale' plugin:
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for 3:4 TV: -vop lavc,expand=-1:576:-1:-1:1,scale=-1:0,dvbscale
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for 16:9 TV: -vop lavc,expand=-1:576:-1:-1:1,scale=-1:0,dvbscale=1024
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Mailing list:
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~~~~~~~~~~~~~
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http://mplayerhq.hu/mailman/listinfo/mplayer-dvb
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List language is ENGLISH. Please avoid using German or other languages!
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Subscribe, and ask/discuss your problems there.
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I will also post feature announcements to this list.
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Future plans/TODO:
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~~~~~~~~~~~~~~~~~~
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- display OSD and subtitles using the OSD feature of DVB cards
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- better (more fluent) playback of non-25fps movies
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- realtime transcoding between mpeg2 <-> mpeg4 (partial decompression)
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