vmlabs wrote:I also have near-zero luck with audio sync by waveform.
I mainly deal with dialogue audio and my workflow runs through the externally recorded audio through a effects chain to clean it up, EQ, compression, De-esser, etc.
Even with repeated "clap" spikes through the clip and external audio to help sync, I can never get resolve to sync. I get there's likely a lot of waveform changes to the external audio track due to the post-processing, but visually in the waveforms, they are almost exact.
They've recently fixed a bunch of bugs in this area - perhaps after my rather persistent requesting and - far more important - providing substantial reproducible test cases. You might want to give it another try in 18b6.
vmlabs wrote:I also have near-zero luck with audio sync by waveform.
Maybe we could have an option to configure how loose of a match we will accept for the waveform sync. Like some type of acceptable threshold deviation. Like if we have a couple of clap spikes in the audio along with 96% match of waveform, I don't see why it can't do a best effort sync.
Another thing I'd love is an automatic elastic wave compensation option with synced tracks.
In some cases, I have long running video and audio clips. To the best of my ability in sample rate and video fps and drop frame settings to match the video source, after about 6+ minutes, I get a bit of audio drift that causes the lip sync to look weird.
The idea again that if there were perhaps beginning and end clap spikes in the audio we're trying to sync, and the waveform sync could be intelligent to look for matches across slightly different waveform durations/stretches, it could automatically sync to a user defined source track, then do the elastic wave stretch of the other track to automatically adjust for any timesync drift.
These enhancements would certainly be nice.
Another that I'd love to see is the ability for PluralEyes to create actual synced clips rather than just aligned clips in the timeline. Or better still, to add a feature to take all the clips in a timeline and turn them into Synced clips.
See here for more detail on this:
viewtopic.php?f=33&t=161857