[maceye]

Is there a way to convert DIVX movies to MPEG4 movies? Also, am I right in assuming that MPEG4 movies will be smaller in size than the DIVX movies (maintaining consistent quality of course)?

[lucylawless]

Originally posted by maceye:
Is there a way to convert DIVX movies to MPEG4 movies?

Divx 5 claims to be mpeg-4 already. If you mean is there a way to put divx content in an mp4 file, I'm sure there is, but you might have to use the command line. If you mean, convert the video to Apple's mpeg-4 implementation, you can export a divx movie from quicktime pro, to either an mp4 file or a quicktime file with mp4 content.

Also, am I right in assuming that MPEG4 movies will be smaller in size than the DIVX movies (maintaining consistent quality of course)?

no (again, assuming you mean Apple mpeg-4). First of all, divx and mpeg-4 are lossy compression codecs. 90% of the time, encoding from a lossy codec to another lossy codec will lose quality and gain file size, because the destination codec tries to preserve the compression artifacts introduced by the source codec (obviously there are exceptions, for example DV is lossy. But the higher the compression, the worse this will be). Furthermore, Apple's mpeg-4 is lower quality than divx 5, and arguably lower quality than divx 3.11a. If you just put the divx video content in an mp4 file, who know what will happen, it might playback better

[maceye]

Thanks-that was exactly the info I was looking for!