[MEncoder-users] Problems when creating video dvd

[Giacomo Comes]

On Mon, Jan 16, 2006 at 05:29:37PM +0100, Sebastian wrote:
> Hi Giacomo,
> thanks for your input.
> On Mo, Jan 16, 2006 at 11:10:06 -0400, Giacomo Comes wrote:
> > On Mon, Jan 16, 2006 at 03:17:10PM +0100, Sebastian wrote:
> > 
> > harddup is missing. It could cause desync.
> > 
> Added.
> > 
> > If the resulting mpeg plays fine with mplayer, go on. Otherwise 
> > try to take out some lavc options (trell:cbp:dia=-10:predia=-10:vqmin=1:lmin=1)
> > and check the resulting mpeg.
> > 
> > 
> Because I don't understand these options anyway I removed them.
> > 
> > This is known. The current mpeg muxer has problem with NTSC stream.
> > You should remux the audio and video with mplex. In this way dvdauthor
> > will work fine.
> > 
> I tried to remux the files with both mplex and tcmplex to no avail. Both
> ended with lots of noise.
> > 
> > Are you sure
> > that there was enough free disk space when you run dvdauthor?
> > 
> Yes Sir! Plenty of space at the moment.
> > The fact that you cannot mount the disk is unusual. 
> > It can only means 2 things. 
> > 1) The iso image is corrupted
> > 2) the burned disk is corrupted
> > 
> > You can do:
> > mkisofs -dvd-video -o image.iso dvd
> > and mount the iso image. If the image mounts then burn it and mount 
> > the dvd. If it fails the problem is with the burn process/media/etc.
> > If the image does not mount, the problem is with mkisofs/dvdauthor.
> > 
> > Giacomo
> > 
> 
> I'm encoding the movie again. Let's see what the result looks like. Now
> I used:
> 
> mencoder -sws 9 -vf scale=720:480,harddup -ofps 30000/1001 Loose\
> Change\ 2nd\ Ed\ Divx.avi -nosound -ovc lavc -lavcopts
> dc=10:vqmin=1:aspect=16/9:vcodec=mpeg2video:mbd=2:keyint=12:vrc_maxrate=9800:vrc_buf_size=1835:vpass=1:vbitrate=5230
> -o /dev/null -of mpeg -mpegopts format=dvd && mencoder -sws 9 -vf
> scale=720:480,harddup -ofps 30000/1001 Loose\ Change\ 2nd\ Ed\ Divx.avi
> -nosound -ovc lavc -lavcopts
> dc=10:vqmin=1:aspect=16/9:vcodec=mpeg2video:mbd=2:keyint=12:vrc_maxrate=9800:vrc_buf_size=1835:vpass=2:vbitrate=5230:
> -o test_vid.mpg -of mpeg -mpegopts format=dvd
> 
> I'll reply in a few (~3h). Something bothers me, though. I can't tell if
> it was "trell:cbp:dia=-10:predia=-10:vqmin=1:lmin=1" or "harddup" in
> case the result works fine this time, can I? Well, I guess I'll invest
> some more in this matter if the result works and if you want me to.

Using -nosound is also a bad idea. In order to test stuffs (options,
dvdauthor, mplex, etc) I would suggest you to encode only a small 
portion of the movie. You can use -frames 10000 in order to encode
few minutes. Test the results and when you have found a working
command line, encode the whole movie.