James Trietsch wrote: > I'm looking for the select group of crazy people out there. You know who > you are, the ones running interlaced recordings (recorded from SDTV) > interlaced to an interlaced output (TV). I can't imagine there are many > of us... but I beg your help. > > My recordings from TV on Freevo are beautiful (given the bitrate I'm > devoting to it). They play back smooth... except every once in a while, > they get jittery. Having a background in TV production, I recognize this > is reversed fields in interlaced playback, as opposed to some kind of > encoding artifact. If I pause Freevo/Mplayer and then resume, everything > is back to normal. Or sometimes if I let it go long enough, it will > correct itself. > > It's a minor annoyance... either I have to quickly pause/unpause, or if > I'm watching with someone else I'll just grit my teeth and bear it until > it corrects itself. > > What I think is happening is for some reason, mplayer decides it needs > to drop a frame, but instead it drops a field, so now the field-order is > reversed. And once it's paused, it starts off in the correct order > again. This could make sense if mplayer treats interlaced playback as > 60fps where each 'frame' is one of the fields. > > I tried adjusting the -autosync value and it seemed to help, but it > still doesn't make it bulletproof. If it is a matter of mplayer dropping > fields/frames, I'd like to know what's causing it. I have an XP1900+ > with 512M of ram and a G400Max video card... unless my hard drive is the > bottleneck I can't see any reason it should choke. But perhaps I'm > missing something.
What about -framedrop, does this help? You won't see a single dropped frame. I also notice some odd playback glitches every once in a while, even with re-encoded video taken from a DVD. But I'm not sure if it is caused by mplayer or XV. The CPU load with mplayer on my machine is 10% so a shortage of power. It could be a problem with the disk not supplying data quickly enough at times. When playing a recorded mpeg I see: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 18860 root 5 -10 172m 20m 15m S 9.6 2.1 0:11.10 mplayer 3622 root 14 -1 56968 13m 8164 S 2.3 1.3 10:53.99 X 3674 root 25 10 272m 61m 8712 S 1.0 6.2 9:00.34 python 3566 root 25 10 65524 1936 552 S 0.7 0.2 3:47.92 nxtvepgd But this is really a question that should go to the mplayer users list. I would be interested in anything that you find out. Duncan ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Freevo-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freevo-users
