[mythtv-users] 0.25 Major AV sync problems

[George Nassas]

On 2012-06-19, at 4:26 AM, David Moore wrote:

> On 19/06/12 16:24, Jean-Yves Avenard wrote:
>> 
>> it's bizarre that it's not something everyone would see
> 
> And now that I grep the code for "AVSync" I find that mythplayer.cpp has a bunch of functions which appear to handle audio/video sync. And there appears to be different A/V sync code in ffplay.c. Hmmm. Starts to make sense. I think the A/V sync code for any media player would likely be in the player code rather than a shared library because it would be largely codec independent. This would also explain why mythfrontend.real and mythffplay can use the same libraries yet exhibit different A/V sync behaviour.

To add another datapoint I see major A/V sync problems with HLS streams - when someone on camera is speaking their lips are nowhere near their words. I don't have a good sense of when it started happening  but I'm pretty sure it was after the post-.25 ffmpeg sync.

- George