Quote:
Originally Posted by FranceBB
PQStat (written by William Swartzendruber, who is also a user of this forum) can do it for you: it's free, open source and written in Rust.
It will scan the whole video and report the right values in nits.
Please note, though, that if you're not scanning a lossless masterfile made of 12bit tiff but rather a consumer relatively low bitrate HEVC .ts file from a broadcasting channel or a consumer UHD-BD HEVC .m2ts file (which also has a low bitrate compared to the master), there are gonna be compression overshooting (i.e outliers) which might affect the overall detection.
(Just as a reference, a ProRes 4K mezzanine file, which is NOT lossless, has 1 Gbit/s as bitrate and it's still losing quality and potentially creating overshooting, so those ARE DEFINITELY GONNA HAPPEN in a "low bitrate" H.265 HEVC file...)
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Thanks, I'll check that one out.
Wouldn't it actually be better to use the value, overshooting or not, since it's from the source that the decoder gets anyway?