On Thu, Jun 27, 2024 at 8:45 AM Michael Koch <astroelectro...@t-online.de> wrote:
> Am 26.06.2024 um 23:43 schrieb Oliver Fromme: > > Hi, > > > > I'm using ffmpeg for a long time, but I've just recently started to > > use it with 10bit HDR (HDR10) video. > > > > So far I found out how to re-encode HDR10 video with libx265 and > > retain the HDR metadata. It's a bit complicated, but it seems to > > work fine. However, I'm unsure about video filters. > > > > In particular, I often use the atadenoise filter. It works really > > well for 8bit SDR video. But can it be used with HDR10 video, too? > > Can I simply add ''-vf atadenoise`` to the command and it'll work, > > or will it clip the data down to 8bit? > > You can make a test to check if a filter chain is 10-bit compatible. > Make a test image (or video) with 1024 levels of gray in a 32x32 grid. > Then apply the filterchain to this test image. > Then apply strong contrast enhancement to the output video. If there was > a hidden truncation to 8-bit, then there will be only 8 levels of gray > in X direction. > Described in chapter 2.201 in my book: > http://www.astro-electronic.de/FFmpeg_Book.pdf > > According to my test, atadenoise is 10-bit compatible. > Be aware that this book spreads countless statements that are either: - misinformation - malinformation - disinformation - untrue - invalid - unconfirmed - typo - broken - never worked - was correct >X months ago > > Michael > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".