On Thu, Nov 07, 2002 at 11:22:48PM +0000, Dominik Szczerba wrote:
[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html] Hi,
Thank you all who submitted hints on this. This is what I finally ended up with:
- some NTSC dvds wont play/rip on some DVD drives while they will play/rip on others. I tried a few NTSC 29.97 fps movies on a few computers.
- those, who rip/play correctly: I specify a (suggested by 1st pass encoding or calculated myelf) bitrate, but it is wrongly passed to encoder. I need to myltiply the desired bitrate by ~1.2 ( I guess that's from 25/29.97, no?) to get proper file length (and bitrate used). So I have to say br=1200 if I want br=1000 and a filesize coresponding to 1000.
Hi, Are you sure yours dvds are ntsc 29.97? I remember I had this problem when I begun with mencoder. If I played the vob with mplayer, it said 29.97 fps. When I passed this value to mencoder I got a file shorter than I calculate... Some day I proved the vob with transcode (a fine piece of software, but has serious problems with A/V sync with ntsc dvd) and it said fps: 23.976 which seems the standar for no television movies. I tried with ofps=23.976 and the expected size and the final size of the files became very closed. I'm not completly sure, but I believe that all the vob files that I display with mplayer said 29.97 fps, I don't know if this is some kind of error or I'm doing something wrong.
- all above problems dont apply to PAL dvds (tested some 10 or so)
afaik pal hasn't the to flavors 23.976/29.97 as ntsc has... Regards, -- Martín Pavón martin_199ar@yahoo.com.ar http://mate.dm.uba.ar/~mpavon/