ffmpeg-quality-metrics VS vmaf

Have you seen ffmpeg-quality-metrics? I went with the docker option. I figured that would keep it simple with ffmpeg versions/whatever.

I'm not good at computers, so I love ffmpeg-quality-metrics. I use the docker version because I didn't want to fight with dependencies.

There are even tools that can compare the quality for us, like ffmpeg-quality-metrics can give a VMAF score as used by Netflix for the visual quality difference.

You can at least test the quality difference between two encodes with something like ffmpeg-quality-metrics. If it has a high VMAF score and saved a bunch of space for something that doesn't need to be perfect, then I consider it fine.

ffmpeg-quality-metrics is nice for comparing quality between copies. Better than squinting at pixels IMO.

If you're re-encoding video then ffmpeg-quality-metrics is a great tool IMO. Can give you a scale from 0-100 of how similar it appears based on SSIM or VMAF. If I get a VMAF in the high 90's, like 95+, then I know the encode is decent and if it saved significant space (if that's the goal?) then it's a keeper.

It's working. I found this [model](https://github.com/slhck/ffmpeg-quality-metrics/blob/master/ffmpeg_quality_metrics/vmaf_models/vmaf_v0.6.1neg.json) with the help of u/Felixkruemel and I specified the vmaf path in av1an using `--vmaf-path=path to the/vmaf/model.json"`

Then, after the encode, if you want to compare original vs encoded quality there's ffmpeg-quality-metrics which makes it easy to get VMAF & SSIM scores between the two.

ffmpeg-quality-metrics is a good tool to compare before & after encodes. It can easily calculate VMAF & SSIM scores. If I understand it correctly (I might not), then anything in the high 90s for VMAF is considered hard-pressed to be able to tell. Sometimes it hits 100, which makes me fairly confident about those encodes.

idk. When I did a re-encode with CRF 23 and preset 'veryslow' it went down to 2,236 kb/s. When I do a VMAF and SSIM test with ffmpeg-quality-metrics I was getting decent scores. It takes the file size down to 2.1GB. So my guess is they either set a significantly lower CRF or set a manual bitrate and aimed for the moon.

Netflix did VMAF for this: https://github.com/Netflix/vmaf

It checks a reference video against an encoded video and returns a score representing how close the encoded video appears to the original from a human perspective.

Not sure this is the right sub but I'm going to encode my entire BluRay collection in AV1 / NVEC. I'd like to optimize settings with VMAF but would like an ubuntu/debian based GUI to work with.

VMAF for anybody that doesn't know quantifies the quality difference between a source and modified video.

Netflix even has a method to measure perceivable quality difference. A little while ago I used this tool to calculate this.

Well you can use something like https://mediaarea.net/en/MediaInfo to look at the files and https://github.com/Netflix/vmaf to see if there is no loss.

Vmaf exists

You can try some tests https://github.com/Netflix/vmaf

You can try VMAF as well (which ffmpeg supports). It's normally recommended to make a lossless copy first as a baseline too