Noah Truth
Active member
So I was experimenting with trying to lip sync video at various speeds using Barry Green's parameters in this thread:
http://www.dvxuser.com/V6/showthread.php?187340-Slow-Motion-but-Lip-Synced-Music-Video-Technique
I only used about 1.2 minutes of footage for each test but I think I may have come up with some base settings that appear to work well for lip syncing. I used Audacity to initially speed up songs.
On one test I shot at 30fps with the song sped up by 25%. I then slowed the footage down by 80% in PP and it seemed to sync very well. (Not sure why it didn't work for 75%, as that's what I tried first).
I then shot at 60fps with the song sped up by 30% and slowed it down by 77% in PP. This result may be slightly off by a half percentage or less but it seems 77% is close to a sweet spot.
Lastly, I shot at 60fps with the song sped up by 50% and slowed it down by 66.5% in PP. Again, probably slightly off by maybe a half % (67% seemed to be fairly close as well).
All footage was conformed to a 24p time base. I tried testing the 30fps footage in a 30p time base and there didn't seem to be any difference in how the audio/video synced. I'm guessing this holds true to other frame rates as well?
So basically my findings were:
30fps (sped up by 25%) -- slow to 80% in PP
60fps (sped up by 30%) -- slow to 77% in PP
60fps (sped up by 50%) -- slow to 66.5/67% in PP
All using 24p time base. Again, keep in mind these percentages may not be exact, but should provide a good starting foundation to work with.
Unfortunately, I didn't test 60fps sped up by 100%.
I have no clue whether or not I was doing this right as it seems the information provided in Barry's thread conflicts with my findings. I would love any input or feedback on this subject.
http://www.dvxuser.com/V6/showthread.php?187340-Slow-Motion-but-Lip-Synced-Music-Video-Technique
I only used about 1.2 minutes of footage for each test but I think I may have come up with some base settings that appear to work well for lip syncing. I used Audacity to initially speed up songs.
On one test I shot at 30fps with the song sped up by 25%. I then slowed the footage down by 80% in PP and it seemed to sync very well. (Not sure why it didn't work for 75%, as that's what I tried first).
I then shot at 60fps with the song sped up by 30% and slowed it down by 77% in PP. This result may be slightly off by a half percentage or less but it seems 77% is close to a sweet spot.
Lastly, I shot at 60fps with the song sped up by 50% and slowed it down by 66.5% in PP. Again, probably slightly off by maybe a half % (67% seemed to be fairly close as well).
All footage was conformed to a 24p time base. I tried testing the 30fps footage in a 30p time base and there didn't seem to be any difference in how the audio/video synced. I'm guessing this holds true to other frame rates as well?
So basically my findings were:
30fps (sped up by 25%) -- slow to 80% in PP
60fps (sped up by 30%) -- slow to 77% in PP
60fps (sped up by 50%) -- slow to 66.5/67% in PP
All using 24p time base. Again, keep in mind these percentages may not be exact, but should provide a good starting foundation to work with.
Unfortunately, I didn't test 60fps sped up by 100%.
I have no clue whether or not I was doing this right as it seems the information provided in Barry's thread conflicts with my findings. I would love any input or feedback on this subject.
