[MPlayer-users] A-V sync with mencoder/mplayer
daytooner at gmail.com
Thu Dec 10 20:12:56 CET 2009
Thank you very much for explaining WHY I was getting the sync problem.
Things make much more sense to me now. These tapes are 25+ years old, and
the player is at least 15, without being tuned up for many years. Too bad
nobody else could give me that answer (and I have posted on MANY different
lists/sites for a long time).
I did try mplayer -dumpstream, but I kept getting a core dump, and nothing
in any log (any that I know of).
With VLC, I do get A-V in sync, but I can't get the video resolution and
quality that I got with mencoder. That was mainly (I believe) from the "-tv"
options "mjpeg" and "decimation", which did the mjpeg compression on the
card's hardware, and also gave a 704x480 screen. When I watch the VLC
captured video in full screen (especially with a good video card and nice
monitor) I see some pixelation (with VLC) that I didn't with mencoder.
I do get a lot of XRuns, though with VLC. Any ideas?
But, at least it is capturing in sync now :-).
If you have any suggestions for re-processing the captured video (via
mencoder perhaps) to improve the VHS image/sound, I would love to know.
2009/12/9 "Ing. Daniel Rozsnyó" <daniel at rozsnyo.com>
> Ken Bass wrote:
> > Hi all, newbie here - so please bear with me :-)
> > In short, I am trying to capture video from vhs, via a tv capture card.
> > the A-V is out of sync - audio lags video. Actually, it becomes
> > progresssively worse as the recording goes on.
> I've tried the same thing - recording from VHS. The problem is that
> with a bad vhs tape (or a slow motor) you get rather a variable frame
> rate video than an exact 25 (or 30) fps one.
> I've solved this by running VLC as a capture and encoding to mpeg2 ts
> and using mplayer -dumpstream to record the stream. Both on different
> computers, to avoid problems with disk buffers, etc..
> With mplayer I can not get recorded analog television either, and the
> signal was better than on vhs.
> But no luck.
> > I have been fighting with this for a long time. So any help/pointers will
> > greatly appreciated.
> > TIA
> > ken
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