[MPlayer-dev-eng] Reverted patch of time-based PTS locking

[Mac Smith]

On 13-Aug-2012, at 6:01 PM, Pásztor Szilárd wrote:

> Hi,
> 
> I noticed that my new mplayer compilations fail miserably on H.264 PAFF
> streams, for which I contributed a series of patches back in 2010.
> In cvslog I found that the time-based PTS recalculation part got removed on
> Aug 18 2011:
> 
> "Log:
> Remove strange pts locking code that would never really result in good
> A-V sync and actually break it quite seriously in some cases
> (Reportedly NTSC DVDs with pullup under high CPU load?)
> 
> Patch by Steaphan Greene [sgreene <at> cs binghamton edu]"
> 
> I find this move problematic because this now renders mplayer incapable of
> properly handling interlaced PAFF H.264 streams by default - again.
> There is a PTS reordering code available with the -correct-pts option but
> this is not applicable for streams with severe A-V desync, for example VDB
> H.264 data.
> 
> In every case, the time-based algorithm resulted in the best A-V sync for me
> and it certainly locks in correctly for all H.264 streams I could find - and
> there are many of them. Now mplayer cannot even start resyncing DVB streams
> because the pts reordering code gives up, spitting "Too many buffered pts"
> messages because the A-V desync is way too big by default for its buffer.
> 
> This is why time-based recalculation was introduced that works even for
> streams with bogus PTS.
> Please point me to sample(s) that were broken by this code so I can look into
> it and apply a fix if needed. I really think this code (maybe fixed) should
> get back into the trunk as the difference it makes is extremely significant
> with H.264 streams.
> 
> greets,
> s.
> 
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can you please provide me a fix for this issue.

Mac