

u/maxplanar shared another really weird and even easier trick that also seems to solve this problem. It worked for me, so I decided to share it in case it helps anyone else too. Note that simply deleting the audio tracks in Premiere does not fix the issue for some reason, you need to import two separate files for this. I don't know, but if I had to guess, probably something to do with Premiere trying to sync the audio and video in an unoptimized way if they are a single file, leading to huge performance loss. Saying the difference is night and day would be underselling it. I'm now able to somewhat smoothly scrub the timeline. Here's a clip of me comparing the original file playback performance to the sequence made with this trick. This is NOT reencoding - the process is extremely fast (4 hours of footage took me a couple of minutes to complete) and causes NO quality loss. They extract the original video and audio streams from the original file.


Use that sequence as the footage instead of the original mp4.Create a new sequence consisting of the two files you just imported.Import the resulting two files ( video_only.mp4 and audio_only.m4a) into your Premiere project.ffmpeg -i original.mp4 -c:a copy -vn audio_only.m4a.ffmpeg -i original.mp4 -c:v copy -an video_only.mp4.Run these commands (replace the filenames):.
#Movist lag h.264 install#
