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jpeg-animation doesn't play smoothly

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Christoph Oertli
jpeg-animation doesn't play smoothly
on Jun 21, 2017 at 10:24:56 am

I have to do an animation of the inside of an elevator travelling between floors. My AE composition consists of different jpgs (elevator doors and -walls) animated with position keyframes.
Composition settings: size: 2160 x 2560px / frame rate: 50
Render setting: H264 / bitrate 10-12MBit
The mp4 file doesn't play back smoothly in any video player (QT, vlc) nor in a timeline of Adobe Premiere. The problem is random though: once, it plays fine, and then it stutters next time. The jerky movement is not constant; like every 2 seconds there is a 'hick' within the otherwise smooth movement.
I experimented a lot now with changing the bitrate and the keyframe interval, it doesn't help. What I don't understand is that a composition of exactly the same frame size with 4k video footage is playing just fine.

Any help is much appreciated!

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Richard Garabedain
Re: jpeg-animation doesn't play smoothly
on Jun 21, 2017 at 4:16:44 pm

well why is your frame rate 50? its probably that...try 29.97 or 59.94 fps...That is also probably why it plays different everytime you play it back.

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