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Old 01-31-2023, 12:56 AM   #1
took-the-red-pill
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Default Video editing. Render is very choppy, jumpy, low quality

Hello all,

I have an absolute monster of a machine: a 6 core Mac mini with 32 gigs of ram, and the UHD 630 video card that has 64 gigs of onboard ram. I have video that was shot at different frame rates but I've used Handbrake to convert them all to 24 FPS M4V files.

INSIDE Reaper, my video plays like butter. All silky and smooth. Gorgeous.

HOWEVER, when I render, and then watch the rendered video in Quicktime, or VLC, it's all choppy, jumpy, almost as if it was shot at about 10 frames a second(It plays at the correct speed, I'm just using the 10FPS metaphor to give you an idea of how it looks).


I've checked and everything is set correctly for rendering as an MP4
Format: Video (ffmpeg/llbav encoder)
Format: QT/MOV/MP4. Size 1920 X 1080 frame rate 24 fps
Video: MJPEG
And of course I put .mp4 so the whole thing works.

Any idea what happens between the time I view it in the Reaper view window and I render it to view in 'the outside world?'

Thanks
Keith
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Old 01-31-2023, 01:01 AM   #2
tonalstates
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I had this issue like a year but then it was gone i can't remember why. Maybe instead of ffmpeg you can try the AVFoundation in output format. That's the one I've used without any issues.
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Old 02-04-2023, 08:08 PM   #3
took-the-red-pill
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Not sure what it was but I started over and now it works.
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Old 11-30-2023, 04:19 AM   #4
yearsleyp
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Quote:
Originally Posted by tonalstates View Post
I had this issue like a year but then it was gone i can't remember why. Maybe instead of ffmpeg you can try the AVFoundation in output format. That's the one I've used without any issues.

I empathize with the frustration of choppy and low-quality video renders. It can be a real buzzkill for our creative endeavors. To tackle this issue, have you considered using Movavi Video Cutter? It's been a game-changer for me! Video Cutter is an excellent tool that not only trims your footage seamlessly but also ensures smooth and high-quality renders. It efficiently removes unwanted sections without compromising video quality, giving you the crisp and clear output you desire. I've personally found it to be user-friendly and effective, making my editing process much smoother. Give it a shot, and hopefully, it resolves the choppy render issue you're facing. Happy editing!
Thanks for the information!

Last edited by yearsleyp; 12-03-2023 at 10:18 PM.
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Old 06-20-2024, 01:03 PM   #5
androo
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Reviving this old thread just to say that I was getting very poor quality with the MP4 and the ffmpeg but finally got good quality from the MOV render but file size went from 70MB to 2.4GB for ostensibly the same resolution.
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Old 06-20-2024, 03:42 PM   #6
Fergler
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Mjpeg was probably the culprit
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