a2212ed11e
DVD and bluray packet streams carry (essentially) random timestamps, which don't start at 0, can wrap, etc. libdvdread and libbluray provide a linear timestamp additionally. This timestamp can be retrieved with STREAM_CTRL_GET_CURRENT_TIME. The problem is that this timestamp is bound to the current raw file position, and the stream cache can be ahead of playback by an arbitrary amount. This is a big problem for the user, because the displayed playback time and actual time don't match (depending on cache size), and relative seeking is broken completely. Attempt to fix this by saving the linear timestamp all N bytes (where N = BYTE_META_CHUNK_SIZE = 16 KB). This is a rather crappy hack, but also very effective. A proper solution would probably try to offset the playback time with the packet PTS, but that would require at least knowing how the PTS can wrap (e.g. how many bits is the PTS comprised of, and what are the maximum and reset values). Another solution would be putting the cache between libdvdread and the filesystem/DVD device, but that can't be done currently. (Also isn't that the operating system's responsibility?) |
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|---|---|---|
| audio | ||
| compat | ||
| core | ||
| demux | ||
| DOCS | ||
| etc | ||
| osdep | ||
| stream | ||
| sub | ||
| TOOLS | ||
| video | ||
| .gitignore | ||
| .travis.yml | ||
| AUTHORS | ||
| configure | ||
| Copyright | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| talloc.c | ||
| talloc.h | ||
| travis-deps | ||
| version.sh | ||
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 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.
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
You can find us on IRC in #mpv-player on irc.freenode.net