veikk0

@zdenop You're mixing up JBIG2's lossless mode with the lossy mode. Lossless mode works flawlessly and is the most efficient bitonal compression available for PDF files. Lossy mode is the...

I just ran into this problem. Both input and output images are attached below. * Input: [memoirsofsherloc00doylrich_0015.ppm.zip](https://github.com/mozilla/mozjpeg/files/6150878/memoirsofsherloc00doylrich_0015.ppm.zip) (zipped for uploading) * Output (`-grayscale -quality 20`): [memoirsofsherloc00doylrich_0015.jpg](https://user-images.githubusercontent.com/7808922/111349574-eaa11980-8689-11eb-89a4-69f9b6c8bd07.jpg) For this specific file,...

If I had to make a guess, I'd say that because 4K videos have so much detail, cropping even a small area (relative to the total number of pixels) can...

>Setting -r 24 for vmaf came from https://github.com/alexheretic/ab-av1/pull/115 & discussion https://github.com/alexheretic/ab-av1/issues/108. The exact values used for `-r` don't make a difference for the actual VMAF calculation, as long as they're...

There is something very strange about the behaviour of this game. On my Radeon RX 470 system using the FOSS drivers from Padoka's PPA, at the first launch I only...

For posterity and the ability to reproduce this using publicly available source files, I encoded the 1080p files from the objective-2-slow test set to a VMAF target of 93 using...

The fix was just committed to FFmpeg master: https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/5f4b7bf2b5b675a4a1dfc3b64c1c5dd03d80f278

See also #724. Users of `n_subsample` should also know about [a common quirk with values that are divisible by 2](https://github.com/Netflix/vmaf/issues/1214).

>But the denoising seems an important part as it's the bit that will yield better compression. Removal of noise also happens when using encoders normally, and this is why the...