ffmpeg vob conversion quality

Question

I am trying to convert a VOB file to mpeg like this:

./ffmpeg.exe -i VTS_01_2.VOB -r 24  out1.mpeg

However, the quality is very poor.

I tried ./ffmpeg.exe -i VTS_01_2.VOB -vcodec copy out1.mpeg

But the file size is too large (90% of original - 300 MB for 4 minute video), and windows movie maker hangs on trying to import it.

How can I get a decent quality mpeg from my VOB?

Answer 1

ffmpeg -i input.vob -vcodec copy -acodec copy output.mpg

This command does not reduce the size or alter quality. This merely demuxes the vob and repackages it as an mpeg. You should be left with exact same quality. The size changes minimally due to losing the overhead of the vob container.

If you want to maintain quality and reduce size you are going to have to convert it with another codec like h.264/xvid/whatnot in a mkv/mp4/avi container.

Answer 2

See the advice on this thread :

convert decrypted .vobs to .avi with ffmpeg on ubuntu