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. Best Regards.
