Video quality great in VLC Player, but crap inside Premiere

Question

Hi all. I am confounded by a problem where my MP4 video clips that look fine in a Windows player (like VLC player), yet show high-compression artifacts in certain spots when imported and played in Premiere. Even if I render it, it doesn't go away. If you compare the two shots, you'll notice clear artifacts at the bottom left of the green surface in the "Premiere" version. These just appear once or twice for 1-3 seconds in any one video clip. The format is H.264 10-bit.

I'll confess that I still use CS6 (it's embarrassing, yes, but other movie clips don't show this problem).

Please help!

jamieclarke · Accepted Answer

Hi @jamesp30028642 -  Premiere Pro CS6 is unfortunately far beyond its supported lifetime. The best next step would be to test the same clips in a current version of Premiere Pro (or the current LTS). That will almost certainly resolve this and is the only supported path forward.

jamesp30028642 · Answer

Hi Ann, thanks for your reply. The thing is, the other 10-bit clips in Premiere look ok, and these problem ones also look fine when played outside of Premiere. So, it must have something to do with Premier's playback. I have been converting my video from H.256 MOV files to H.264 MP4 with HandBrake, because this old version of Premiere can't read the newer format. But, I've been previously transcoding them to H.264, uncompressed, with no quality loss..

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