Lossless Image Formats

[Jay123210599]

Which one of these lossless image formats is the smallest? If I convert a lossless format into another lossless format, it will still be lossless? What tools can convert videos into image sequences of these lossless formats?

[Attachment 76207 - Click to enlarge]

[Cornucopia]

If you convert from one lossless format to another - AND keep the same resolution, color space, color subsampling, bitdepth, framerate, etc - then it will continue be lossless. Change any of these, and it will NOT.

Why do you need this info?


Scott

[Jay123210599]

If you convert from one lossless format to another - AND keep the same resolution, color space, color subsampling, bitdepth, framerate, etc - then it will continue be lossless. Change any of these, and it will NOT.

Why do you need this info?


Scott

Just making sure. Also, my other two questions?

[jagabo]

I would worry much more about compatibility and portability. Stick with PNG unless you're using some 30 year old software that only support TGA or some such.

[poisondeathray]

Depends on the pixel format - some image formats with high compression do not support certain pixel formats

If it was 8bit RGB, webp lossless RGBA typically gets about 10-30% better compression than typical 8bit PNG settings .

webp has decent compatibility (open source tools, web browser support) but still far less than PNG . For example, many professional programs will not import a webp sequence

If the main goal is lossless compression, consider a lossless video format with temporal compression - they will always be smaller than an image sequence in the same pixel format

[Jay123210599]

Depends on the pixel format - some image formats with high compression do not support certain pixel formats

If it was 8bit RGB, webp lossless RGBA typically gets about 10-30% better compression than typical 8bit PNG settings .

webp has decent compatibility (open source tools, web browser support) but still far less than PNG . For example, many professional programs will not import a webp sequence

If the main goal is lossless compression, consider a lossless video format with temporal compression - they will always be smaller than an image sequence in the same pixel format

How do I turn a video into a lossless webp image sequence, then?

[poisondeathray]

How do I turn a video into a lossless webp image sequence, then?

I'll post here
https://forum.videohelp.com/threads/413045-Webp-image-sequence