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I rendered 250 frames to png for an animation. I opened these images as Image Sequence in QuickTime (10.5), and set the frame rate to 25 per second. This should give me a movie of 10 seconds.

I got a 10 second movie, BUT all 250 images play within the first 4 seconds, and the remaining 6 seconds are just a still frame of my 250th image!

When I enter other frame rates, like 60 / second, I get a 4 second movie, but all the movement is in the first 40%, then only a still frame.

How can I create a movie from my 250 png images that actually plays at 25 fps?

I don't have to stick to QT, it just seemed the easiest option. Anything on macOS would be ok. I had the same problem in Compressor though.

EDIT in response to Allen Simpson's easy-to-follow reply (thank you!)

Unfortunately same result as described above.

Sequence of 250 images: files

start-frame, end-frame, 25 fps:
settings

Result: a 10s movie clip with all the movement in the first 4 seconds and a still frame for 6 seconds... Ouch! Can't get my head around this. Any suggestions?

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I can't say for sure but the first thing I'd do is just render it out as an mp4 from Blender.

Here's a complete breakdown of the steps:

When you first open Blender hit the Video Editing preset.

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Go to Add -> Image/Sequence.

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Go to the folder containing your images and sort them by name so that they are in order going down the folder. Hit A to select all and add them to the timeline.

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You should see the timeline something like this, now, and be able to play back your sequence with the controls at the bottom.

Note: Playback will stutter because Blender does not prefetch the frames by default. If you play it through a couple of times everything will be loaded in RAM, provided you do not run low, and it will play normally.

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Now head over to the top right panel and make sure your resolution, frame start and end, and frame rate are what they should be.

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Finally, scroll down to the Output section. Pick a directory and change the file format to ffmpeg (or your choice).

And set the container and codec you want to use.

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