[Terry Hogan]

I have tried various ways of rendering the same 15.5 minutes of edited Canon 7D MOV 1080 24p files in SVP 10c. Here are the results using QuickTime Pro to playback the SVP rendered MOV or MP4 file on my Gateway FX6800 with Core i7 2.67 GHz CPU and 6 GB or RAM:

I first rendered a WMV file 1080 24p version which looked great played on Windows Media Player and the audio was in sync with the action.

Sony AVC 1920×1080 24p – Result: 1.53 GB mp4 file. Image quality looked good but rapid hand movements by actors did not play smoothly in QuickTime. Audio had lost sync and was slightly ahead of the action by a little less than one second, which was very evident in shots where I had left in the slate being clapped.

SVP Quick Time Movie Custom settings: Video Format: Avid DNxHD codec , Compressed depth: 32 bpp color, Pixel aspect: 1.000, Audio 48,000 Hz, 16 bit, Stereo, PCM, Frame rate: 23.076 (IVTC Film), Frame Size: 1920×1080 Progressive, Project Properties: Pixel Format: 32 bit floating point full range rather than the default 8 bit, Full resolution rendering quality: Best
Result: 19.2 GB MOV file. Image quality was great, fast action was smooth, but audio had lost sync and was ahead of the action by about the same amount as the Sony AVC mp4 video.

I then used QuickTime Pro to do an H.264 render of the above 19.2 GB Avid DNxHD MOV file using the highest quality 1080 24p settings. Result: a 6.35 GB MOV file that looked as good as the Avid DNxHD MOV file it was rendered from but which still had the audio out of sync and ahead of the action in the movie.

SVP QuickTime Movie Custom settings: same as above except I used Photo JPG instead of DNxHD. I rendered one version at 100% quality which resulted in a 12.5 GB file and an 80% quality version that resulted in a 9.07 GB file. Both files looked great and played smoothly in Quick Time. However, the same serious problem occurred with the audio losing sync and being slightly ahead of the video.

The sound tracks were all the original Canon 7D internal microphone recorded tracks. I had made no adjustments to the synchronization of the sound and video in SVP. I also tried rendering a SVP QuickTime movie Photo JPG 80% with the audio setting at 44,100Hz. However, the audio was still out of synch and ahead of the action by a little less than one second when I played the video in QuickTime Pro. Does anybody have a solution for this audio sync problem?

[Terry Hogan]

Thanks for all the advice.

Last night right after my original post, I tried rendering Canon 7D 1080 24p MOV files that I had edited in SVP 10c with these settings:

The “Save as type” QuickTime 7 (*.mov) Custom settings were: Video Format: Avid DNxHD codec , Compressed depth: 32 bpp color, Pixel aspect: 1.000, Audio 48,000 Hz, 16 bit, Stereo, PCM, Frame rate: 23.076 (IVTC Film), Frame Size: 1920×1080 Progressive

Project Properties: Pixel Format: 32 bit floating point full range rather than the default 8 bit and Full resolution rendering quality: Best

The resulting 19.2 GB MOV file looked great on a 24″ monitor when played with Quick Time on my PC. I don’t know how it would play on a Mac. Do any of you see a problem with these settngs? I will have to experiment and compare with all the suggestions you all have given. The screen size in the theaters used for the film festivals is probably around 40 feet so I am thinking I will need all the quality I can get in the render settings.