mirror of
https://github.com/mpv-player/mpv
synced 2025-03-11 08:37:59 +00:00
Command line video player
b3d12c3d54
Relative seeks backwards didn't work too well with incomplete files, or other files that are missing the seek index. The problem was that the on-the-fly seek index generation simply added cluster positions as seek entries. While this is perfectly fine, the seek code had no information about the location of video key frames. For example, a 5 second long cluster can have only 1 video key frame, which is located 4 seconds into the cluster. Seeking backwards by one second while still located in the same cluster would select this cluster as seek target again. Decoding would resume with the key frame, giving the impression that seeking is "stuck" at this frame. Make the generated index aware of key frame and track information, so that video can always be seeked in an idea way. This also uses the normal block parsing code for indexing the clusters, instead of the suspicious looking special code. (This code didn't parse the Matroska elements correctly, but was fine for files with normal structure. Files with corrupted clusters or clusters formatted for streaming were not handled properly.) Skipping is now quite a bit slower (takes about twice as long as before), but it removes the special cased skipping code, and it's still much faster (at least twice as fast) than libavformat. It needs to do more I/O (no more skipping entire clusters, all data is read), and has more CPU usage (more data needs to be parsed). |
||
|---|---|---|
| audio | ||
| compat | ||
| core | ||
| demux | ||
| DOCS | ||
| etc | ||
| osdep | ||
| stream | ||
| sub | ||
| TOOLS | ||
| video | ||
| .gitignore | ||
| AUTHORS | ||
| configure | ||
| Copyright | ||
| LICENSE | ||
| Makefile | ||
| README.rst | ||
| talloc.c | ||
| talloc.h | ||
| 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 `issues 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`` .. _changes: https://github.com/mpv-player/mpv/blob/master/DOCS/man/en/changes.rst .. _mpv-build: https://github.com/mpv-player/mpv-build .. _homebrew-mpv: https://github.com/mpv-player/homebrew-mpv .. _issues tracker: https://github.com/mpv-player/mpv/issues