I tested with VDR 1.4.3 and test_av app included in 22623 test firmware package, with firmwares 261a, 261f, 2622 and that test version 22623. Everytime playback stuttered and lost a/v sync after scene change situation.
So I think this is more like dvb firmware/driver problem than VDR problem. However this is very annoying.
I agree, this is not VDR problem but firmware. However, I don't know which mailing list is better to report this problem: vdr or dvb thus I've sent this here.
My gut feeling is that these problems appeared around when AC3 bitstream out came into DVB firmware, and I think that was done by Werner Fink.
I think he has kept knowledge by himself, so maybe he should be able fix the situation?
http://www.linuxtv.org/download/firmware/ 2004-12-26 dvb-ttpci-01.fw-261d Changes by Werner Fink: - Implement AC3/DTS replay capability - Proper handling of OSD bitmap loading with timeouts - Set interpolated option of video decoder to reduce block noise on hard picture changes - FlushTS command fixes
2003-10-13 dvb-ttpci-01.fw-261b fixed distortions when switching channel while recording ..
2003-07-09 dvb-ttpci-01.fw-261a
(this is the first new type of firmware(is it?), and was already tested by you)
But this is a feeling, not a fact. So maybe older default firmware for old type of driver should be tested, I mean not dvb-ttpci* type of file, I mean Root & Dpram -files.