C.Y.M wrote:
> Udo Richter wrote:
>> Tero Siironen wrote:
>>> However, like Pasi Juppo told earlier in other thread, in last weeks
>>> episode
>>> of Lost there was many fadeout-fadeins between scenes and a/v desync
>>> happened on every one of these.
>> I've 'heard of such problems' on ATV+ and Lost. Whenever there's a fade
>> into black, the data stream seems to get stuck, frames get delayed, and
>> as consequence A/V desyncs and playback gets jerky, with lots of audio
>> and video frame drops. This can be fixed by pausing and jumping a few
>> frames backwards.
>> My theory is that since audio is typically 600ms ahead of video, maybe
>> the audio buffers run over. Strange thing is why this happens
>> reproducible on blackness. Maybe due to extremely low bit rate in this
>> situation, more frames get packed into one data block, causing data flow
>> to be disturbed beyond some limit. It cant be too high data rate, ATV+
>> has just 2mbit avg, 4mbit max data rate.
> This theory sounds reasonable.  Any idea on a way to fix it? The biggest
> question is if it can be fixed from within VDR's source code or if it would
> require an additional firmware/driver revision.  I have given up hope on it.
> The only way I know of that is reliable is using software decoding.

But, the biggest question is.. why does the ONLY happen when playing back

Best Regards.

vdr mailing list

Reply via email to