Changing frame rate on AMA DSLR footage

[Bouke Vahl]

Don’t edit the H264, you’ll go crazy…
Transcode to DNxHD.

For the speed change, open the Console, type IgnoreQTrate 1 or IgnoreQTrate True

Then import the clips.
I don’t know if this will work with an AMA transcode as well, but it definitly works with a normal import.
BUT, you’ll loose your sound. You can import that afterwards, but then you need to slomo the sound as well.

Bouke

https://www.videotoolshed.com/
smart tools for video pros

[Ryan Mast]

[Bouke Vahl] “Don’t edit the H264, you’ll go crazy…”

As I suspected… Is there ever any advantage to editing native H.264?

[Bouke Vahl] “For the speed change, open the Console, type IgnoreQTrate 1 or IgnoreQTrate True

Then import the clips.”

Okay, just did that. What I have now is, all of the footage is in the bin, as DNxHD 115 (HD1080p), and it’s showing the Format as HD 1080p/24, and FPS as 24. It plays back at the same speed as before; my goal was to retime it so it plays back at 80% recorded speed. Did I do something wrong?

Thanks for your help, I really appreciate it.

—
Meteor makes pretty.

[Bouke Vahl]

well, editing native H.264 seems impossible now, but we also thought so about long GOP MpegII…
Who knows what happens in the future, but for now, it sucks as it is way too processor intensive to decode.

Not sure what goes wrong with the import. It ‘should’ slomo the clips.
Did you transcode after AMA or a ‘real’ import?

Bouke

https://www.videotoolshed.com/
smart tools for video pros

[Ryan Mast]

[Bouke Vahl] “well, editing native H.264 seems impossible now, but we also thought so about long GOP MpegII…”

It’s actually not too bad in Premiere, but I was having trouble getting the timeline to Color or Resolve. There’s occasionally a bit of lag in playback starting, though.

[Bouke Vahl] “Did you transcode after AMA or a ‘real’ import?”

I did a “real” import. Should I do it the other way?

—
Meteor makes pretty.

[Bouke Vahl]

nah, ‘real’ import should do the trick.
perhaps you have to strip the sound first.
(extract video in QT pro, then save as self contained)

Not behind an Avid now….

But the Cinematools routine should work as well.

Otherwise, page Michael, he knows for sure.

Bouke

https://www.videotoolshed.com/
smart tools for video pros

[Craig Thomas quinlan]

You can do this in Cinema Tools or After Effects, but if you don’t have them, the ignoreQTrate true in console works perfectly IF you have stripped the audio, as Bouke said.

Just open the h.264 original in QT Pro (you can’t do this in Quicktime X – you need to download qt 7 and open the footage there) and extract the video. Hit Command+J to open the Movie Properties, click the movie track and hit ‘Extract’. Save as self-contained, and import as mentioned.

[Ryan Mast]

[Craig Thomas Quinlan] “You can do this in Cinema Tools or After Effects, but if you don’t have them, the ignoreQTrate true in console works perfectly IF you have stripped the audio, as Bouke said. “

Ah — I didn’t strip the audio. Guess that was the problem.

What I ended up doing was transcoding the footage to ProRes and reconforming to 23.976 in Cinema Tools, then using AMA to access it in Avid, since I did still need the audio for reference on a few clips.

Bouke and Craig, thanks so much for taking the time to help me. Finally started editing tonight, and I’m liking the MC interface.

—
Meteor makes pretty.