• VEGAS Pro

  Wrong black levels when saving as AVC/H.264

  Posted by Cody Hernett on January 14, 2009 at 9:00 pm

  Hello all,

  I’m attempting to save some 720p video from my digital camera as a .mp4 file using the MainConcept AVC/AAC encoder in Sony Vegas 8. The problem is, the rendered clip has “crushed” black levels (ie some colors are too black and missing information) and I can’t seem to rectify the problem. When I render as a DivX AVI or even Uncompressed RGB32 the colors are fine. I tried disabling the ‘Studio RGB (16 t 235)’ option in View > Video Scopes but the rendered MP4 still has crushed blacks. Any ideas? Thanks!

  P.S. The problem does not seem to be effected by what format I’m editing, as saving the clip as .mp4 after editing it in RGB uncompressed still yields the problem.

  Craig Patterson replied 17 years, 6 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Cody Hernett

  January 14, 2009 at 9:43 pm

  Oh, and one more thing you guys might be able to help me with. I’m having trouble with the audio not being synchronized when playing back the rendered file. When I’m in Vegas, my audio is perfectly lined up. When I render, I chose to sync audio every 0.250 seconds (which is the default). Should I perhaps sync to every frame or what?

  – Thanks
• 

  Craig Patterson

  January 15, 2009 at 2:26 pm

  I can’t respond to your black problem, but audio not being in sync is typically caused by not making video edits on frame boundaries. If your audio drifts out over time, that’s your issue. Make sure you’ve checked Quantize to Frames (Alt-F8). If it wasn’t checked during the editing process, you’ll have to go back and adjust every edit to a frame boundary.

  http://www.pmerecords.com
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