bug image drone hevc

If its’ DJI I’m assuming your files are definitely Constant Frame Rate?. 

I’m editing a project with some DJI Pocket 3 footage (this is constant frame rate) but Premiere 26.3 does have some issues with sticky playback. Even same on HEVC footage from my Lumix S1-RM2.

I’ve gone back to 26.2.2 and these issues went away. This is on Windows 11 Pro. 

As Neil correctly says though, Long GOP can be troublesome.

Drone and screen-capture media is always long-GOP, meaning there are very few actual full frames of video recorded. LIke … every 9-60 frames or so. That is all the actual video file. Those complete framea are also highly compressed, and take de-compression routines before being displayable.

What's the rest? The vast majority of frames?

Data sets of pixels that a) will change before the next iframe (complete frame) or b) pixels that have changed since the last iframer … or c) … bothL

So in order to display “just tne next frame” the player has to find and decompress the iframes on either ‘side’ of that specific  group of pictures, decmpress the iframes, and one by one, in order, take the i-frames and data sets and re-create each frame, storing it all to RAM and or cache, to get to ‘the next frame’ to be displayed.

This is doable in most players on most systems as they only play down the clip AND do not mix frames from different spots in a clip or different clips. Which is several orders of magnitude higher resource demanding than simple playback.

Any NLE has bits of clips chosen at random by the editor, mashed together, with other effects added. Which also vastly increases resource demands on the computer. Which is why the phrase “ why can X player do this and my NLE can’t” is pretty much seen as saying one doesn’t really understand the codec involved.

In fact, 6k RED RAW filse would proabably be vastly easier for your machine to handle in a sequence.

So with long-GOP playback issues, the speicifi hardware … OS/CPU/RAM/GPU and how the media is stored, internal SSD or whatnot, is important information to help sort playback issues.

Hello ​@mike grimaud 

Welcome to the Premiere Forums and thank you for your bug report. I’m wondering if your footage might be VFR. Playback may be choppy as it drops frames to maintain audio sync, but you can load the clip into source and check out your Effects Control Panel and change it to Smooth Motion.

Could you let me know if you have this option and if this smooths out the playback?

Hoping to help,

Amy