4k 29,97fps footage plays strangely slowly in Source + Program monitors (Premiere 22.6 + new laptop)

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@ShaggyAD2018 wrote:

 

I have tried to use "New sequence" created from presets, I have tried created them from "Custom" new sequences, I have tried to create a new sequence with the "Drop footage over the new item button" method to make sure that the sequence has the exact same parameters as the original footage.

 

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While "New Sequence from Clip" works with just about any file format that Premiere Pro supports, for the purposes of editing it's meant to be used with an intermediate format like ProRes or DNx.  

That camera creates XAVC-S files which are encoded in long-GOP format. In other words, it only records a complete frame every 14-30 frames, and in-between records 'data charts' with the 1) pixels that have changed since the last complete frame ( i-frame); 2) the pixels that will have changed by the next i-frame; or 3) both.

So the program has to decode up to 30 "frames" of media just to playback the currently displayed frame. Constantly.

And unless your computer hardware has a specific internal hardware setup for H.264/5 decoding, and one that fairly well matches with the camera chip used in your camera, your computer can struggle with that media.

There's switches in the Preferences for hardware encoding and decoding. Try setting or unsetting those, some work better one way or the other. Past that, creating proxies in Cineform, ProRes, or DNx may be a very useful tool. They will play back beautifully.

@RjL190365 is the other user around here that knows this stuff cold.

Neil

Hey there. I haven't encountered this before, specifically, and haven't worked with this camera. In part I just wanted to bump this thread to see if you had gotten anywhere on it. The one thing I have seen that sounds similar is from clips downloaded from social media sites that might play fine in a video player, but there is something about the metadata of the file that Premiere cannot read properly. I wouldn't expect that behavior with a clip coming from a camera, but if you're interested in testing a workaround you can download the transcoding software Shutter Encoder and try doing a Rewrap of one of your source clips, even back into the same container. This can refresh the metadata and maybe that has Premiere reading it properly?  

Have you tried a different Premiere version as well?