Best lossless codec

[ToiletDuck]

I have a couple questions. First of all is what is a great lossless codec? Which one gives the best compression? And also how can it be used?

[Tommy Carrot]

FFV1 with arithmetic coding gives the best compression ratio. You can use it for example with virtualdub. :)

[moogie]

It depends on your source.

i.e. for CGI, cartoons/anime etc then probably corePNG is your best bet.

for natural images, huffyuv or ffv1 is probably for you.

If you are working in the RGB colours space (i.e. 4:4:4) then HuffYUV in RGB or corePNG are really your only options.

[ToiletDuck]

there was one that said it could do 1.1-1.9 times huffyuv. I haven't tried it though. I'll look for it. Could I use ffv1 with a raw .vob file?

Any idea on what the compression is on that? If I were to take a DVD and do that how much smaller would it be? Would a 4gb DVD be 2gb? Just wondering I've never done it with video before. However I've used lossless codecs with audio before and was really suprised at how well they worked. Could get a 40-50mb song down to 16-20mb and sound wonderful. Not bad on the audio part. If I could do that with movies then I'd have to give up divx I think and just get me a nice 300gb harddrive :D

[RadicalEd]

Well you're forgetting that CD audio is uncompressed, whereas DVD video isn't. Unless you have very strange circumstances, a lossless encode of any kind will be far larger than the original Mpeg 2 video.

[ToiletDuck]

hmmmmmmmm. I figured that it would be able to take a regular.vob or a .avi conversion of it.... You're right I never thought of it like that.
Duck

[Luna]

have u ever tried alparysoft lossless codec? it supports many formats as well :-)
http://www.alparysoft.ru/prod/compression/lossless-video-codec.php