lossless video codec

[juicemansam]

I was wondering what lossless video codecs exist for unix/linux environments, preferably ported or native.

Also, since MJPEG is just a bunch of JPEG images (which are lossy) stored as frames, would it be possible to use the PNG format (or a variation) for lossless compression of video streams while capturing, since temporary uncompressed captures can be very big and temporary JPEG compression will lose some data.

Thanks.

[ChristianHJW]

Hmm ... is there no HuffYuv port for Linux existing ?

[FishB8]

Hmm ... is there no HuffYuv port for Linux existing ?

Really sux, doesn't it.

You may want to consider using a DV codec. DV compression is DCT codec very similar to MJEG, but it has better image quality because the frames can have more localized optimization in the quantizing tables. Add to that the advantage you get when working from DV based video cameras. You can dump the tape, edit and dump right back to tape without any compressing to and from from MJPEG. Or if you're final output is something else using a 4:2:0 scheme such as YV12 (DVD for instance) you can wait till the very end and then convert it for minimal quality loss.

The only advantage a lossless codec would offer (in quality) is if you are working with film or computer animation.

[ChristianHJW]

Originally posted by FishB8 Really sux, doesn't it.

Stay tuned for CoreYuV :D !! Now, as we know there is no HuffYuv for Linux there is one reason more to start this project, and support Linux also.

[mean]

Huffyuv is part of libavcodec
so mplayer/transcode and avidemux can use it.