Video footage provided as 444 (RGB) does not transcode to 422 (YUV) properly. I believe it misinterprets the levels, making the image appear low contrast and milky on playback yet transcodes to 422 have clipped blacks and expanded contrast. I tested this using CineformRGB (444) and ProRes4444 and it provided the same results: Adobe Media Encoder or Premiere results in clipped blacks and stretched contrast compared to an identical transcode using DaVinci Resolve on the same machine.

In further testing, 422 sources (CineformYUV, DNxHR HQ and ProRes422) do not have the same issue and can be transcoded without issue.

Please fix this issue as editors frequently transcode and don't always check to confirm there has been no visual change on the scopes. Premiere should assume video data levels for 422 sources and data levels for 444 RGB sources, but provide overrides within "interpret footage" section.

This is a MAJOR game stopping issue, especially as the latest versions are supposed to have color management features. Its difficult to trust an application to manage color spaces when it can't even handle video transcodes, especially when this issue is further complicated by the obnoxious "gamma" confusion that many still have.

Long Story Short: Premiere (and AME) should transcode video without requiring any advanced codec knowledge, such as selecting levels, to provide a proper transcode from a 444 RGB source to 422 YUV source. Other applications, like Resolve, handle it seamlessly.

Yesterday I found out the hard way while working on a time critical live event that ProRes 422 files recorded by AJA recorders (the standard for live show records) are totally incompatible with Premiere 13.0.3. The video file would not playback at all, and it would brick my external hard disk the file was on. We experienced this on multiple systems. Finally another editor let me know 12.1.2 would work. While 12.1.2 would edit and play the file. It would drop audio or drop frames every 20 seconds during playback in premiere. Making for the most frustrating editing experience I have had yet. When I tried to transcode the file in Media Encoder it would crash as well. Ultimately I had to make a transcode in Apple Compressor. I tested the problem file in FCP X and it had no problems playing it at all as well. This is very bad for pro adobe users, please fix.

Regular media players show the glitch, but continue playing through it, and the glitch resolves itself after about a second, and the file plays normally. Premiere however cannot play this files at all, and it completely freezes if you attempt to pull the up in the source window. In addition, Adobe Media Encoder is unable to transcode these files and renders out nothing but a red or green screen for the duration of the clip. I have been having to use Handbrake in order to transcode these files. Why is Handbrake and every other media player able to work through this glitch but not Premiere?

For some years we have had the CineForm codec bundled with Premiere Pro. This is great.

But, to being able to even use old files (avi) created with the CineForm codec for let´s say ten years ago i must manually install the CineForm decoder from GoPro.

Since the CineForm codec is bundled today the most natural thing would be to being able to decode old CineForm files with the bundled CineForm codec we have today. Especially since the decoder software is getting harder to get. I cant even find it on GoPros homepage today.

I have many hours of old avi masters and would love to see a native support for them in Premiere Pro. Since CineForm is bundled with Premiere Pro it should be an easy fix, hopefully. :)

Please, make it happen! :)