> > I'm trying to convert a mpg file, from GATOS, its mpeg1 video, mp2 > > audio in an mpg file. > > > > I extracted the tracks and reencoded like this: > > > > mplayer -vo yuv4mpeg -ao pcm long.mpg > > cat stream.yuv | mpeg2enc -I 1 -f 1 -q 9 -V 230 -P -F 7 -a 1 -o > > svcd_stream.m2v
Unusual options: -f 1 means you are encoding as a vcd. In that case the input should be progressive and -I 1 makes no sense. -F 7 means 60000.0/1001.0 (ntsc field rate), which, I guess, is not consistent with -f 1. -a 1 means square pixels: make sure that your source has square pixels and that the you are encoding for computer playback only. Also -V 230 will be overridden by the default (46). If you want to tune these parameters you will need to use -f 2. Please take a look at the mjpeg-tools for recommended settings for vcd and dvd encodings. > > cat audiodump.wav | mp2enc -r 48000 -o mpegsoundfile > > mplex -f 8 mpegsoundfile svcd_stream.m2v -o long.conv.mpg Guess you are trying to make a dvd compliant mpeg1. Never tried that myself... I think you will need to use a frame rate that is valid for dvd (-F 3 for PAL, -F 4 for NTSC). > > > > Everything is fine for about 10 minutes then the audio starts to drift. > > > > Is there anything I can do about this ? What playback software/hardware do you use? As Bernhard wrote: > Is it till that time perfect in sync and starts than to drift ? > > If you have NTSC it could be that the framerate changes between about > 29,97FPS and about 23,97FPS. That is a possibility. Please try again with a more standard frame rate and provide more info on your input stream if you still get A/V sync problems. Selva ------------------------------------------------------- This SF.net email is sponsored by: ObjectStore. If flattening out C++ or Java code to make your application fit in a relational database is painful, don't do it! Check out ObjectStore. Now part of Progress Software. http://www.objectstore.net/sourceforge _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
