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mpegplayer A/V sync - please report experiences

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Didro:

--- Quote ---Insert Quote    
Quote from: Didro on March 28, 2007, 05:46:41 AM

I tried to set off Skip Frames option: video became good. Besides that A/V sync is good too in many videos but in other audio goes ahead video.



Didro,

Can you upload your video somewhere for me to analyse?
--- End quote ---

linuxstb, here is uploaded video in which audio goes ahead video on my iPOD nano:

http://www.sendspace.com/file/ixc5z1 (10 MB)

Llorean:
Okay, on my Nano, the audio and video stay in sync just fine, it just drops a LOT of frames. More than it does if I try it with an older build (I had an older build on the first time I tried the file, sadly I'm not sure what build it was).

With both builds I reached the end of the file and it was in sync even at the very end. It may be that the framedropping is making it look like it's out of sync to you, or there may be a communication issue in regards to terms.

Are you seeing the video pause for about a half a second, but the audio continues, then the video skips ahead a very little bit to where the sound is, but the sound immediately continues ahead without the video again?

Didro:

--- Quote ---Okay, on my Nano, the audio and video stay in sync just fine, it just drops a LOT of frames.
--- End quote ---
I have such situation too, and to make video smooth without skipping so many frames i set off Skip Frames option. Then video became good, and even A/V sync became good in some videos, but in other A/V sync is bad, and in my opinion for Nanos new improvement isnt good, cause before it video and A/V sync was nice but now...  :(

Llorean:
If you turn off Skip Frames, it can't sync the Audio and Video. Any time they line up is luck.

Was your bad A/V sync always with it off?

Didro:

--- Quote ---If you turn off Skip Frames, it can't sync the Audio and Video. Any time they line up is luck.

Was your bad A/V sync always with it off?
--- End quote ---

I dont know, but A/V sync keeps normal in many videos. Maybe I just encode video with suitable FPS, video and audio bitrate.
Also have to say that with new improvements I can run only one video succesfully, when I run next it makes screen black and only audio plays so to view it I must reboot rockbox. Before mpegplayer hangs not so often.

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