DivX vs. DVD: What's the real difference?
in Software ·
Richard Howard2 said:The picture quality isn't quite hitting the level of a DVD format (same goes for the sound, which stays stuck at stereo), but it’s still a massive step up from VHS or older stuff like Super Video CD and VCD. Besides DivX, you've got plenty of other formats out there that aren't any worse, like Xvid, Windows Media Video, and so on.
Nice job—you laid everything out really clearly. I just wanted to point out a few tiny little things, just to make sure we're all on the same page... if you go with a high bitrate, the DivX picture can actually look pretty close to a DVD. Honestly, I've seen some DVDs out there with terrible quality. On a standard monitor or an old TV, you might not even notice the difference, but on a modern LCD? Man, you definitely will. I can guarantee you that a "standard length" movie on two DVDs would look great on a nice screen. Once we get MPEG-2 on actual DVDs, maybe then the quality on a single disc will be truly amazing... but we aren't quite there yet. And the resolution isn't exactly cutting edge either...
DivX is basically just an MPEG4 compression algorithm, similar to Xvid and the rest of them. When you use these codecs, the video gets tucked into container files like AVI, OGM, or MKV... inside those files, the audio component can be compressed using pretty much any codec you want. So, a "DivX file" isn't actually stuck with stereo. You could have a Dolby Digital track from a DVD in there, or anything else—from mono to 6-channel, 8-channel, or even 25 channels (which doesn't exist yet, I'm just saying it's a possibility 😉)...