59 lines
2.1 KiB
Plaintext
59 lines
2.1 KiB
Plaintext
$OpenBSD: README,v 1.4 2011/08/17 15:12:15 edd Exp $
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Porting notes for MPlayer
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=========================
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In addition to the comments in Makefile, porters should also read these
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notes:
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FFmpeg Linkage
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--------------
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We link the shared libraries from the graphics/ffmpeg port. This is what
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--disable-ffmpeg_a does, however we still need the FFmpeg sources in the
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build dir for this to work, hence we depend upon FFmpeg as a build dependency.
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Ensure that FFmpeg was dynamically linked by using ldd on the MPlayer
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binary and searching for one of the FFmpeg libs in the listing (eg.
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libavcodec).
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Selecting Codec Implementations
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-------------------------------
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As a general rule, we prefer to use FFmpeg implementations, but only if
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they are good quality. If this is the case, try not to pull in external
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codec libraries for the same codec.
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There is an exception to this rule, which is where an external library
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provides an encoder and decoder, and there is a decoder for the given
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codec in FFmpeg, but no encoder; in such a case, go ahead and link the
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external library so that users can encode with mencoder.
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Be aware that some hardware lacks a floating point unit (ARM for
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example). On these architectures, you should select integer decoders
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where possible. Eg. Tremor instead of Vorbis.
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External FAAC linkage (and graphics/ffmpeg's external FAAC linkage)
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was disabled due to conflicting licenses. Only the FFmpeg's
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internal "ffaac" encoder remains for use with encoding AAC in mencoder.
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https://bugs.launchpad.net/ubuntu/+source/faac/+bug/374900
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Rolling a Distfile
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------------------
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svn checkout svn://svn.mplayerhq.hu/mplayer/trunk mplayer-YYYYMMDD
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cd mplayer-YYYYMMDD
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./version.sh (this should create a version.h)
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find . -name '.svn' | xargs rm -Rf
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cd ..
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tar zcvf mplayer-YYYYMMDD.tar.gz mplayer-YYYYMMDD
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Testing Mencoder
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----------------
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See here to know what you can contain it what:
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http://en.wikipedia.org/wiki/Comparison_of_container_formats
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Make a h264/mp4 (although lavc containers are somewhat broken in mencoder):
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mencoder -ovc x264 -of lavf -lavfopts format=mp4 -nosound -o out.mp4 <infile>
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