• Compression Techniques

  lower thirds affecting its background video

  Posted by Woody Retherford on January 23, 2017 at 5:58 pm

  I’m not sure this is the right forum but I have a problem with m2v going to DVD. I edit in Media Composer using P2 DVDpro HD transcoded to Avid DNXHD 145 video file then adding a lower third to an interviewee and it looks fine, no brightness shift. I then export a QT ref file and put it in Sorenson Squeeze10 using the same parameters I’ve always used(7000kbs for video, 256kbs for audio. I can screen grab all parameters if necessary) I compress to m2v and and an ac3 audio. In the resultant m2v file when the lower third comes on and off there is a brightness shift in the video and I can’t figure out why though I assume its an alpha channel problem. Any ideas?

  I am on MacPro 2008 OS 10.10.5, Graphic card Nvidia GeForce 800GT 512 Mbs

  I Forgot to add: the lower thirds with alpha channel created in Photoshop CC 2017 and imported to Composer

  Woody Retherford

  Woody Retherford replied 9 years, 3 months ago 1 Member · 0 Replies
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