Quote:
Originally Posted by sneaker_ger
-crf 17 isn't lossless.
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agreed
. I was first trying x264 lossless. i read on ffmpeg site
Quote:
The range of the CRF scale is 0–51, where 0 is lossless, 23 is the default, and 51 is worst quality possible. A lower value generally leads to higher quality, and a subjectively sane range is 17–28. Consider 17 or 18 to be visually lossless or nearly so; it should look the same or nearly the same as the input but it isn't technically lossless."
so was trying it out to see if i could make out any difference.
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once i have the colors right there are 2 changes that i can think of
1. color_trc color_primaries colorspace will be set to bt709
2. crf value will be zero and/or if we settle with HEVC then x265-params lossless