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finally have what we always wanted: HEVC support in Adobe Premiere!

Started Dec 2, 2015 | Discussions thread
zipcode Regular Member • Posts: 312
Re: Crushed Blacks, a temporary solution?

Ok, took a file (all files on nx500 are 0-255 and you can't change that), straight to premiere pro, and export. Indeed h265 file is output as 0-255 and to h264 it outputs as 16-235 but without any conversion, so it's just clipped, or at least it's played back as clipped (with any decoder/renderer), because if I do a pc>tv conversion in avisynth it appears correct again (I'm quite confused here, there's something I don't understand about how this range flagging works).

MikeDPR, not sure what you mean by washed out look playing 16-235 on 0-255. That's pretty much the case of every video file until now (like dvd and bluray played back on pc) and they are not washed. You're lucky I think that the 0-255 hevc files show correctly for you. What decoder/renderer combination are you using? As I said, on my nvidia card the only option I found that works is using madvr as renderer or using software YUV>RGB conversion option in VLC (which is very slow).

I think all this 0-255 business is kinda 'new' for consumer video that's why the decoders and renderers simply don't expect it and handle it as 16-235. I'm sure that this will be fixed now that we found out there is a problem here, LAV, VLC and premiere are still actively developed.

The way I'll handle my files for now before importing to premiere is: avisynth file>ffms2>ColorYUV(levels="PC->TV")>save as utvideo 4:2:0 in virtualdubmod. This is about twice as fast and only a bit bigger than using rockymountains and exporting to prores 444 hq, and it's lossless too, and seeking is faster... But using rockymountains or straight ffmpeg will result in correct 16-235 file, same pc>tv conversion seems to be applied.

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