Is there a way to tell which file is higher quality without a 'source' file?

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  • ffmpeg-debug-qp

    Discontinued FFmpeg Debug Script for QP Values

    Another approach - extracting, computing, and then comparing quantizer parameter values amongst input files. This is a proxy for "how much high-frequency information was encoded" by a given macroblock. This is a handy tool for doing that: https://github.com/slhck/ffmpeg-debug-qp

  • vmaf

    Perceptual video quality assessment based on multi-method fusion.

    The only FOSS no-reference metric I know of is CAMBI, which is used for measuring banding. Unfortunately it's not usable via FFmpeg, only from the vmaf executable (or programmatically with the library), and the executable only accepts raw video as input, which isn't very practical for long videos. See https://github.com/Netflix/vmaf/blob/master/resource/doc/cambi.md for usage.

  • WorkOS

    The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

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