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Videos with framerates around 37 to 39 - importing into Premiere

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Gareth Taukin
Videos with framerates around 37 to 39 - importing into Premiere
on Jun 9, 2017 at 6:05:49 pm

I was given some footage that is a combined split screen of a camera capture and a desktop screen capture of a presentation. The resolution is 2560 x 1600 in MOV and the framerate is reported as either 39 or 37 frames per second on the multiple files in Windows file properties. The audio is recorded separately so I have to sync this.

Premeire defaulted to 60 fps on import (which was obviously wrong) which I changed to interpret as 39 or 37 but the timing is still off.

I adjusted the rate to be 63.7% of the original 60 fps that Premiere imported it as and got a close match (which is roughly the equivalent of 38.22 fps. It was still off and drifted. I was hoping to get a perfect match based on accurate interpretation of the captured FPS. I haven't been able to find any common FPS format (Google search) around 37-39 (drop frame or otherwise). I assume all the files are the same but Windows is just reading them around 37-39 (maybe because of a drop frame format).

I assume I can just do a conversion but why can't a pro tool like Premiere figure it out on its own while Windows crudely matches it to 37-39? In any case, converting the video is not the path I want to take as I would loose quality and if something can be converted accurately then why can't it be interpreted by Premiere accurately. Is there a common FPS format around 38fps?


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Dave LaRonde
Re: Videos with framerates around 37 to 39 - importing into Premiere
on Jun 9, 2017 at 6:26:22 pm

You've told us some stuff, but not everything.

Is this variable frame rate video? What's the codec? Why is it already split screen? Can you get the original footage? Do you know details about the screen capture and the camera video? How is this video ultimately going to be used when you're done with it?

And no, there isn't any standard frame rate in the neighborhood of 38fps. Something's wrong here.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Gareth Taukin
Re: Videos with framerates around 37 to 39 - importing into Premiere
on Jun 9, 2017 at 7:17:41 pm

Thanks. From the details I am posting below (from Media Player Classic) it looks like it is a Variable Frame Rate video 12-60 fps which I guess Premiere can't handle...?

It is split screen because it comes from a webinar capture which had a video camera input option for live broadcasting of the presenter and the Powerpoint. I only have access to this footage and I don't have any more details. I am not worried about the final output format as I have control over that.

Format : MPEG-4
Format profile : QuickTime
Codec ID : qt 0000.00 (qt )
File size : 4.36 GiB
Duration : 1 h 21 min
Overall bit rate mode : Variable
Overall bit rate : 7 697 kb/s
Writing library : Apple QuickTime

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 h 21 min
Bit rate mode : Variable
Bit rate : 7 691 kb/s
Maximum bit rate : 768 kb/s
Width : 2 560 pixels
Height : 1 600 pixels
Display aspect ratio : 16:10
Frame rate mode : Variable
Frame rate : 39.485 FPS
Minimum frame rate : 12.000 FPS
Maximum frame rate : 60.000 FPS
Original frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.048
Stream size : 4.36 GiB (100%)
Title : Core Media Video


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Ann Bens
Re: Videos with framerates around 37 to 39 - importing into Premiere
on Jun 9, 2017 at 8:43:31 pm
Last Edited By Ann Bens on Jun 9, 2017 at 8:45:53 pm

Premiere does not handle variable framerate well.
Run the file through Handbrake and set it to constant framerate.
Screencapture need to be in common framerates.

-----------------------------------------------
Adobe Certified Expert Premiere Pro CS6/CC
Adobe Community Professional


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