progdvb.com

Hi..I have the problem with bad A/V sync on USB2 DVB-T source playback. Especially HD channels. SD channels seem to be almost accurate.
Owe to say that this a/v sync problem is with other TV players too..DVBdream, DVBviewer.
The worse is that the out-of sync gap continuously increases as watching the programme.
If I switch to program the audio starts playing almost immediately, the video starts a second or two later and the gap is already there.
Tried to change programme changing method, video codec LAV filters for everything.
Demultiplexor usable only from Prog, other demultiplexors seem to drop the sound after some while and never restore it back. The problem is not in poor DVB signal (prog info indicates near 100% strength/quality).
Any ideas how to preserve good audio sync?

Do you have good signal? Check File->Input traffic->Packet lost value

I have minimal traffic loss 0.1%
For SD it's 1.86%
Quality is good 99% / 99%
Audio is slightly lagging, then drops fully

Please send me logs (Settings->Options->Debug...)

Logs was sent.
For comparison original TV player from the hardware vendor (AverTV 6.5.2 beta) seems to handle A/V sync on HD channels better (ie. it doesn't seem to go out of sync)
Not tested deeply.
The HD A/V sync problem seems to expose only on 3rd part TV viewers.
I wished if Prog could keep the A/V sync more thoroughly since it seems to have a way better UI.

You can try select same codecs and renders line in AverTV.

Hi

AverTV doesn't allow to use custom codecs.
It uses own codec and renderer. And it doesn't use HW decoding so computer is louder on payback.
Anyway the problem is only software based.
Could you improve audio sync for Aver sticks?
I have tried more combinations of codecs, renderers and demultiplexors no one seems to improve the problem significantly. Also keeping A/V sync for SD channels is not optimal with ProgDVB.
Please explain the difference among offered demultiplexers and what they have impact on.

Edit: I have switched to Prog demultiplexor + EVR for a while and the A/V sync even on HD channels seems to be kept a way better. Still sometimes the sketch occures.