best video lossless compression

[blackion]

I wonder what is the best lossless compression program for videos (mainly avi's xvid and mpg) that has encryption?
I would like to archive some of my videos and normal compression tools such as rar don't really compress AVI.

I have downloaded YUVsoft but not sure how to use it.
Any ideas?
Maybe it's not really possible to achieve any compression on compressed avi's? Or perhaps there are some tools that can do that?

[jman98]

Your post is filled with all kinds of conflicting assumptions.

If you want lossless, then you can't really worry about compression. Converting your files to a lossless codec won't make them better. Xvid and MPEG have already compressed your videos in a lossy way. You can't get that back. You can convert them a lossless codec, but it will just make them much bigger and not even a little bit better. Lossless = very large. That is how it is.

Then you talk about trying to compress your AVIs. Yes, they can be compressed more, but not without loss. This is at odds with your desire to use lossless codecs.

I'm not sure what you mean by encryption. People don't normally encrypt their own videos prior to storage. Certain commercial versions of WMV can do DRM, which may be what you mean by encryption, but WMV is lossy.

[jagabo]

The last step of all high compression codecs is entropy encoding -- similar to that used in archiving software like WinRAR. That's why you don't get any more compression using RAR -- it's essentially already compressed with RAR.

The only way to make your videos smaller is to reencode them with a lower bitrate. That means losing quality.

[blackion]

jman: hehe, I like it. Well, your assumption that I'm confused is not correct.
My goal is to compress already compressed video files. Not really a codec. Imagine it as a RAR that is specific for video files. I'm not sure if its there or not, that's why I'm asking.
jagabo: yes, I'm aware of that. But still asking to be sure. Usually I compress private videos in RAR with encryption and upload them to cloud. But was thinking if there is something better than RAR that is specific for videos.

[jagabo]

But was thinking if there is something better than RAR that is specific for videos.

As soon as you find something that can significantly compress a RAR archive you'll have something that can compress video files.

[TreeTops]

Still looking....

[Hoser Rob]

jman: hehe, I like it. Well, your assumption that I'm confused is not correct.
My goal is to compress already compressed video files. Not really a codec. Imagine it as a RAR that is specific for video files. I'm not sure if its there or not, that's why I'm asking.
jagabo: yes, I'm aware of that. But still asking to be sure. Usually I compress private videos in RAR with encryption and upload them to cloud. But was thinking if there is something better than RAR that is specific for videos.

Now that's confusion ...