Blackmagic Forum

Is it possible to position the keyframes in Fairlight to an accuracy of better than one frame period.

I am editing a presentation where the presenter used a laptop microphone for recording, while using the trackpad for annotation. Every time she hits the trackpad there is a thunderous bang on the audio, followed by a period of very low volume until the laptop's AGC recovers. I can do a passable job of fixing things, but because the CLICK often happens in the middle of a word, I could probably do a better job if I had more fine-grained control of the key positions.

Fairlight allows me to drag the key positions with precision, and the audio waveforms seem to behave appropriately, but when I release the mouse button the key position jumps back to the closest frame boundary (I think).

Thanks

peterwfraser wrote:Is it possible to position the keyframes in Fairlight to an accuracy of better than one frame period.

Not currently.

What are you attempting to achieve? There may be a workaround.

You can slip the audio by subframes, to better position it underneath the keyframing, but that does introduce other complications. I thought I saw a “snap to frame boundary” toggle somewhere, or was that for something unrelated?


Sent from my iPad using Tapatalk

Reynaud Venter wrote:What are you attempting to achieve? There may be a workaround.

I have a dialog track with very high amplitude clicks on it. The clicks are typically 10-20 ms. My video is 30 fps, so I am constrained to place the keyframes on 33 ms intervals. Depending on the phase of the keyframe positions, I can either take the Clip Volume way down on either one, two, or three keyframes. If I use one keyframe there is inevitably a large part of the click remaining. If I use three, I am fully removing the click, but also fully removing 100 ms of dialog, and partly removing another 67 ms.

I have done a few dozen of these, and while it's certainly better than the original, I feel it would sound much better if I could just remove the click audio. That would require the ability to set key-points in a more fine-grained way in Fusion.

The other thing I need to do is increase the gain in the few seconds after the click (I assume the trackpad clicks are reducing the AGC gain on the laptop mic that was used for the recording), but frame boundary keyframes are perfectly adequate for that.

I am going to try exporting the audio to audacity, de-clicking it there, and re-importing it.

Thanks

peterwfraser wrote:I have a dialog track with very high amplitude clicks on it.

Resolve provides editing at the sample level (simply zoom in down to the sample) which provides much finer control than keyframing.

That said, sample based editing is not the most appropriate solution to the problem.

I am going to try exporting the audio to audacity, de-clicking it there, and re-importing it

Consider configuring an External Audio Process.

viewtopic.php?f=21&t=123513#p676802