[Solved] mpv drops frames intermittently

I'm using openbox with compton as my compositor. My graphics card is an ATI 5450M and I use it with the open source driver. I seem to be having a very weird problem in which mpv (or mplayer, for that matter) skips frames while playing. It's not a whole lot of frames, usually something like ~4-8 frames in a minute. Sometimes it's more, sometimes it's less. The interval at which it happens is not particularly consistent either, but it happens for every video (HD or not doesn't make a difference). The video plays smoothly, and then all of a sudden, it drops 4 frames. It's very grating on the eyes when this happens.
It doesn't happen in vlc. I know that the easiest thing to do is to use vlc instead of mpv, but I like mpv a lot and would like to use it. It doesn't matter what output type I set. vdpau, opengl, opengl-hq all cause frame drops.
My compton conf is here (https://github.com/genghizkhan91/dotfil … omptonconf). Another point is to be noted that tinkering with the compton conf didn't change much. This conf led to the smallest number of frames being droppped.
Any ideas?
Last edited by genghizkhan91 (2014-03-30 23:58:22)

kokoko3k wrote:
* Do you already tried to disable compton?
* Maybe your screen refresh rate is close to the video one? (24hz - 24p content?)
* Did you tried to increase the video player cache to (say) 4MB?
* Any info in the mpv console output when the frames are being dropped?
* Does mpv uses frameskip by default (in mplayer the -frameskip option is... optional)? maybe you can invert that...
Tackling your points one by one
I've tried disabling compton, but it gives me slightly more frame drops as a result.
My screen refresh rate is 60 Hz.
I've increased the cache to 4 MB, and it doesn't seem to help either
An example of the console output whenever I play something (Notice the "Late" in the second last line):
Playing: 'Nadia' - Shankar Tucker ft. Jaunita John.mp4
Detected file format: QuickTime / MOV (libavformat)
Clip info:
major_brand: mp42
minor_version: 0
compatible_brands: isommp42
creation_time: 2013-09-17 15:16:24
[stream] Video (+) --vid=1 (*) (h264)
[stream] Audio (+) --aid=1 --alang=und (*) (aac)
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [lavc:h264]
Selected audio codec: AAC (Advanced Audio Coding) [lavc:aac]
AO: [alsa] 48000Hz stereo 2ch floatp
VO: [vdpau] 1280x720 => 1280x720 420p
[vo/vdpau] Compositing window manager detected. Assuming timing info is inaccurate.
AV: 00:00:10 / 00:03:30 (4%) A-V: 0.000 Late: 3
Exiting... (Quit)
I've tried disabling frameskip, but to no avail
Last edited by genghizkhan91 (2014-03-30 11:47:09)

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Hi everybody,
This is my first post here... i'm French, so please excuse my english
I have a little but very annoying problem on Final Cut Pro 7.
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Here are some new elements !
I decided to hunt every missing frame, and the answer is : one missing frame every 25 frames. Which means 24 frames are normal, 1 is erased, 24 normal, 1 missing, and so on.
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- I am the one who did something wrong... Final Cut is probably innocent !
I zoomed on the time line. The timecode goes :
00:00:00:00
00:00:00:01
00:00:00:02
00:00:00:22
00:00:00:23
00:00:01:00
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[Solved] mpv drops frames intermittently

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