Is DivX Quantizer 1 Loseless?

[Anakin]

Simple question. And also, guns1inger, please can you not reply to this thread as every reply you give on this forum you seem to have a "I'm better than you" thing about you, which I would rather keep out of this thread.

[poisondeathray]

No it is not.

[hunter99]

Anakin;

Off your Prozac?
Stamp your feet, that may help.

[Anakin]

I'm trying to find a way to store sources but don't want to use tons of gb at a time.

[MysticE]

I'm trying to find a way to store sources but don't want to use tons of gb at a time.

With Xvid a constant quantizer of 2 encode produces very nice results.

[jagabo]

HuffYUV, Lagarith, MSU Lossless, x264 in lossless mode. They can do very well with low entropy material. But all generate large files with real world video.

[vhelp]

I would say, it depends: what lossless is to you and by how much do you decide that it is lossless or not.

Things that influences as lossy:

1. color space conversion, as in one to one or another
2. upsampling or downsampling, both take away and blend away detail, etc.
3. conversion, from one format to same format or another
4. format, going from one to another
5. post processing, can be done in multiple formats; colorspace; sampling; algos; etc. etc.
6. destination codec/format and its limitations or error levels: ie, pixelation; dct; compression; various artifacts; etc.

These are my opinions and can change w/out notice..

In my view of what is lossy vs. lossless:

1. if the video is a one-to-one copy, it is lossless: A 1-to-1 copy is pixel2pixel exactness.

My view of 2nd stage/level of lossless:

1. if the video has no pixelation, and no immediate signs of codec/compression errors, (the kind where you don't have to analize the images for signes of degraded-ness, etc) These can be used as archival mediums for future re-processing.

In this case, the video may not be a 1-to-1 copy or pixel2pixel exactness, but at least does not have pixelation or immediate signs of codec/compression errors. These can be used as archival mediums for future re-processing.

The whole point of archiving is to save space with the least amount of degrade as possible. If during the process to another archival format your *new* source becomes larger than your original source then you have a problem and should not be using that particular format. It would be best to leave it in the original format it was in.

It would take a crafty person to turn a given source over into anther format though much smaller and still maintain lossless-ness, though it can be done.

-vhelp 5104