• Adobe Premiere Pro

  Sony PXW FS5 Sporadic Video Level Changes in Premiere, SLog 2 and 3

  Posted by Lee Berger on February 4, 2016 at 1:37 pm

  I posted this on the Adobe and DV Info Forums, but have received little to no feedback so I thought I would mention it here.

  I’ve shot XAVC-L 1080 using SLog 2 and 3 gammas. Editing the XAVC-L natively in Premiere Pro CC 2015 (V9.2 Zigzag), I see random changes in the picture levels in both the source and program monitors. I can see it on the scopes too. It happens during playback and scrubbing. I don’t see this issue in VLC, Sony’s Content Browser, nor when the MXF files are imported into DaVinci Resolve. Also the problem goes away when I transcode the original files to ProRes 422, and when recorded to ProRes on my Atomos Ninja Blade. The problem does not seem to occur in Ultra HD footage that I shot in Slog 2. It also does not occur in HD, Rec 709 standard gamma.
  Here are two samples:
  1. XAVC L edited natively https://youtu.be/-GZGHK8M3fU
  2. Transcoded to ProRes https://youtu.be/U8UCyBqjTTY No problems.
  The error occurs with or without grading. It happens in all SLOG HD footage. I also saw it on my son-inlaw’s late model IMac with the same type of footage.
  Interestingly enough, it does not occur when editing in PP CC 2014. https://www.youtube.com/watch?v=enKtBr1WX7o

  Could PP be having trouble interpreting the SLOG gamma and or X-AVC-L? Anybody else having this issue? Thanks!

  Lee Berger
  http://www.leebergermedia.com

  Lee Berger replied 10 years, 6 months ago 1 Member · 0 Replies
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