wm4
22b3f522ca
Most libavcodec decoders output non-interleaved audio. Add direct support for this, and remove the hack that repacked non-interleaved audio back to packed audio. Remove the minlen argument from the decoder callback. Instead of forcing every decoder to have its own decode loop to fill the buffer until minlen is reached, leave this to the caller. So if a decoder doesn't return enough data, it's simply called again. (In future, I even want to change it so that decoders don't read packets directly, but instead the caller has to pass packets to the decoders. This fits well with this change, because now the decoder callback typically decodes at most one packet.) ad_mpg123.c receives some heavy refactoring. The main problem is that it wanted to handle format changes when there was no data in the decode output buffer yet. This sounds reasonable, but actually it would write data into a buffer prepared for old data, since the caller doesn't know about the format change yet. (I.e. the best place for a format change would be _after_ writing the last sample to the output buffer.) It's possible that this code was not perfectly sane before this commit, and perhaps lost one frame of data after a format change, but I didn't confirm this. Trying to fix this, I ended up rewriting the decoding and also the probing.
mpv
Overview
mpv is a movie player based on MPlayer and mplayer2. It supports a wide variety of video file formats, audio and video codecs, and subtitle types.
If you are wondering what's different from mplayer2 and MPlayer you can read more about the changes.
Compilation
Compiling with full features requires development files for several
external libraries. Below is a list of some important requirements. For
more information see the output of ./configure --help for a list of options,
or look at the list of enabled and disabled features printed after running
./configure. If you think you have support for some feature installed
but configure fails to detect it, the file config.log may contain
information about the reasons for the failure.
Essential dependencies (incomplete list):
- gcc or clang
- X development headers (xlib, X extensions, libvdpau, libGL, libXv, ...)
- Audio output development headers (libasound, pulseaudio)
- fribidi, freetype, fontconfig development headers (for libass)
- libass
- FFmpeg libraries (libavutil libavcodec libavformat libswscale libpostproc)
- libjpeg
- libquvi if you want to play Youtube videos directly
- libx264/libmp3lame/libfdk-aac if you want to use encoding (has to be explicitly enabled when compiling ffmpeg)
Most of the above libraries are available in suitable versions on normal Linux distributions. However FFmpeg is an exception (distro versions may be too old to work at all or work well). For that reason you may want to use the separately available build wrapper (mpv-build) that first compiles FFmpeg libraries and libass, and then compiles the player statically linked against those.
If you are running Mac OSX and using homebrew we provide homebrew-mpv, an up to date formula that compiles mpv with sensible dependencies and defaults for OSX.
configure --enable-* parameters
The --enable-* parameters unconditionally force options on, completely
skipping autodetection. This behavior is unlike what you may be used to from
autoconf-based configure scripts that can decide to override you. This greater
level of control comes at a price. You may have to provide the correct compiler
and linker flags yourself.
If you used one of these options and experience a compilation or linking failure, make sure you have passed the necessary compiler/linker flags to configure.
mpv's configure script is greedy and automatically enables features as a result
of autodetection. The cases where you may want to use --enable-* are very
limited.
FFmpeg vs. Libav
Generally, mpv should work with the latest release as well as the git version of both FFmpeg and Libav. But FFmpeg is preferred, and some mpv features work with FFmpeg only. See the wiki article about the issue.
Bug reports
Please use the issue tracker provided by GitHub to send us bug reports or feature requests.
Contributing
For small changes you can just send us pull requests through GitHub. For bigger changes come and talk to us on IRC before you start working on them. It will make code review easier for both parties later on.
Contacts
These forms of contact are meant to ask questions about mpv usage, give feedback on mpv and discuss it's development.
If possible, please avoid posting bugs here and use the issue tracker instead.
- Users IRC Channel:
#mpv-playeronirc.freenode.net - Users Mailing List:
mpv-users@googlegroups.com(Archive / Subscribe). - Devel Mailing List:
mpv-devel@googlegroups.com(Archive / Subscribe)
To contact the mpv team in private write to mpv-team@googlegroups.com.