From 65d8709152c5e3942e1a4db958be7cae80ea05b0 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sun, 14 Jul 2013 23:44:50 +0200 Subject: demux_lavf: add terrible hack to make DVD playback just work DVD playback had some trouble with PTS resets: libavformat's genpts feature would try reading until EOF (worst case) to find a new usable PTS in case a packet's PTS is not set correctly. Especially with slow DVD access, this would make the player to appear frozen. Reimplement it partially in demux_lavf.c, and use that code in the DVD case. This is heavily "inspired" by the code in av_read_frame from libavformat/utils.c. The difference is that we stop reading if no PTS has been found after 50 packets (consider this a heuristic). Also, we don't bother with the PTS wrapping and last-frame-before-EOF handling. Even with normal PTS wraps, the player frontend will go to hell for the duration of a frame anyway, and should recover quickly after that. The terribleness of this commit is mostly that we duplicate libavformat functionality, and that we suddenly need a packet queue. --- DOCS/man/en/options.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'DOCS') diff --git a/DOCS/man/en/options.rst b/DOCS/man/en/options.rst index 58fc365db1..66cdadd120 100644 --- a/DOCS/man/en/options.rst +++ b/DOCS/man/en/options.rst @@ -559,6 +559,16 @@ ``--demuxer-lavf-format=`` Force a specific libavformat demuxer. +``--demuxer-lavf-genpts-mode=`` + Mode for deriving missing packet PTS values from packet DTS. ``lavf`` + enables libavformat's ``genpts`` option. ``builtin`` enables equivalent + code in mpv. ``auto`` will enable either lavf (normal playback) or builtin + (DVD playback) in correct-pts mode. The difference between them is that + the builtin code will not potentially read until EOF trying to derive the + PTS (which is very bad for DVD playback). On the other hand, builtin might + give up too early, which is why lavf is preferred normally. ``no`` disables + both. + ``--demuxer-lavf-o==[,=[,...]]`` Pass AVOptions to libavformat demuxer. -- cgit v1.2.3