On Tue, 9 Apr 2002 12:11:02 -0700 Tim Moss <[EMAIL PROTECTED]> wrote:
> Apparently, on Wed, Apr 10, 2002 at 01:54:06AM +0800, csj wrote: > > > > NVrec with FFmpeg produces mpeg which only a hacker can love. IIRC when > > I attempted to demultiplex an mpeg-encoded capture (necessary, so that I > > can re-multiplex it to a VCD-compliant mpeg), the audio and video > > differed in length by more than a few seconds. Needless to say, when I > > multiplexed them back, the audio and video were terribly out of sync. > > I like to think of FFmpeg more as a decoder, used by such popular video > > players as xine and mplayer, than as a general-purpose encoder. > > NVrec with the mp1e (another real-time encoder) module looks more > > promising. Problem is, I couldn't get it to produce any output. > > > > I settled on NVrec with DivX ;-) because it looks better at smaller > > sizes. Simple editing (more like splitting and splicing) can be done > > using avidemux <http://fixounet.free.fr/avidemux/>. > > > Did you use the patch to FFMPEG on the NVRec site. It's necessary for > the audio and video to stay in sync as far as I can tell. I can easily > record an hour long show that stays in sync whereas, without the patch, > recording would start getting out of sync after about 15 minutes. > Also, why can't you record directly to a VCD-compliant mpeg instead of > something else first and then converting it? I was using Marillat's unofficial FFmpeg 0.4.6 (so it should have the patch, no?). I don't notice any sync problems when I just watch the FFmpeg encoded video. The problem is when I split or even just transcode it to something else. It seems that NVrec does some magic to the video to keep it in sync with the audio (or vice versa). I noticed the same thing when recording to DivX. But then DivX is a final form format. As for FFmpeg encoding to a VCD-compliant stream, I don't know. What options do you pass to FFmpeg or NVrec? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
