On Tue, Apr 06, 2010 at 06:49:14PM -0700, Ken Bass wrote: > On Tue, Apr 6, 2010 at 1:51 PM, Josef Wolf <jw at raven.inka.de> wrote: > > > I fail to understand the post you are referring to. How did you finally > > solve your sync-problems? > > I guess this isn't the right link (sorry :-( ) . Simply put, what comes out > of your VCR is not digital, and the quality/syncing depends a lot on the > accuracy (cleanness) of the mag reader head. This indirectly causes a > mencoder feature/bug that when you end the capture, the indexing of the > frames causes the a/v to be somehow out of sync. Therefore, DON'T end the > mencoder capture before re-indexing what you have captured. Do something > like this: > > mencoder -tv "<options>" -o outfn-raw.avi > ^Z when you have captured enough > mencoder outfn-raw.avi -forceidx -o outfn-idx.avi > > then you can kill the stopped mencoder process. Ah, now I see what you are suggesting. But I still fail to see why this is needed. What difference does it make whether the first mecoder is stopped or killed? > > Yeah, I guess capturing to mjpeg should be fine. Then, I'd need to cut the > > video. > > > > What format would be best for cutting (with avidemux?) > > Avidemux understands most formats. You can use it to re-encode the outfn-idx > file to whatever format you need/want - it has a nice gui front end to most > of the mencoder options available. Just remember to add the video filter to > drop damaged frames. I don't seem to find such a filter in mencoder... > I typically capture via hardware mjpeg (my card does the compression), and > encode via lavc to mpeg4. After re-indexing, I run the video through > mencoder for finer processing, using a two or more pass encoding. I tried this command for encoding: mencoder -aspect 4:3 infile.avi -vf yadif=0,harddup -mc 0 -noskip -ovc x264 -x264encopts me=umh:partitions=all:trellis=2:crf=22:threads=4 -oac mp3lame -lameopts preset=standard:mode=2 -srate 44100 -o outfile.avi This seems to give quite good results, but the files are about 1GB per hour. Guess I could reduce quality a bit... Will I be able to create DVDs from x264 without re-encoding?
