[Definitionsf]

Input format is DV/DVCPRO – NTSC, 720 x 480, Millions

Thanks for checking it out…I haven’t had any luck with a workaround thus far. I submitted a trouble ticket to Popwire, but haven’t heard anything yet.

https://www.definitionstudio.com

[Definitionsf]

Thanks for the info on Sorenson 1-pass VBR…still working on matching the quality of the 2-pass VBR from Cleaner.

The slow playback issue seems to be related to the fixed vs. fractional frame rate option. When outputting QuickTime (Sorenson) or Windows Media files using a FIXED frame rate of 15fps (from a 29.97fps source), the files playback at half speed, and the duration of the clip is doubled. Using FRACTIONAL frame rate outputs files that playback correctly at the lower frame rate. RealVideo seems to be immune from this issue.

I’ve posted some sample clips to illustrate the case:
https://www.definitionstudio.com/compressionmaster/VideoTest20_fixed15fps.mov
https://www.definitionstudio.com/compressionmaster/VideoTest20_fractional15fps.mov
https://www.definitionstudio.com/compressionmaster/VideoTest20_fixed15fps.wmv
https://www.definitionstudio.com/compressionmaster/VideoTest20_fractional15fps.wmv

This is not a big deal if you’re always going to 15fps from 30fps, but that’s not always the case. I’m going to submit this to Popwire tech support also.

BTW, this is on Mac OS 10.3.8 with QuickTime 6.5.2, Compression Master 3.1

https://www.definitionstudio.com