FOURCC Change

[anirban]

If I change the FOURCC of a XviD file to DIVX will it affect the quality of the file in any respect?

[guns1inger]

No. The FourCC is simply a tag to hint at what encoder was/decoder should be used. It will not change the quality of the video in the file. It may change the decoder being used to open the file, which could affect the quality of playback.

[anirban]

Thanks a lot...

[foolosophy]

And how do I change the FourCC in Linux?

mencoder infile.mpg -o outfile.mpg -ovc copy -oac copy -ffourcc DIVX

does not work. It outputs a REALLY crappy video.


I need to change the fourcc from [mp4v] to [DIVX] in order to be able to play the video in my DVD player (it recognizes the DIVX header but does not recognize the mp4v header.

[cd090580]

Use a fourCC editor, they should exist for linux too. Or simply edit your file in any editor (in binary mode) and change the values for the FourCC. They are in the beginning of the file.

[foolosophy]

I couldn't find a fourcc editor in my distro (Gentoo). And I had alredy tried editing the file with nano or kwrite, but everything crashes. The mpeg file is +1GB in size.

I can't believe that I'm stuck with such a stupid issue.

[jagabo]

Try DX50, not DIVX. Will your Divx/DVD player really play Divx in an MPG container? That's unusual. They usually require an AVI container.

[foolosophy]

Uhm, maybe. The thing is that it's a cheap DVD player, so the manual doesn't say much about it, and I'm just too lazy to create all sorts of sample videos to test which ones it plays and which ones it does not.

And, strangely, I believe that a few months ago I couldn't play an AVI that had the DX50 header, but I could if it had the DIVX or XVID flag. The best candidate is XVID header, definetely (at least for my player).

To change the MPEG to AVI what should I do? The line of mencoder that I posted here in this thread does not work well.