playing one mp4 file Load gets up to 500% / Stuttering Videoplayback

[Bodo]

Hello,

last week i wanted to play an mp4 file in a theater - it was playing smooth during a test but on the beginning of the show the load goes up to 500% and the movie on the projection was just stuttering in 11 fps. I used a very powerfull Win 11 (Version 25H2) the specs in the picture below - anyone any idea what could be the reason for that strange behavior?

[DusX]

@bodo

I would transcode it again using shutter encoder or something. It sounds to me like a corrupted video codec so recreating it is probably your best choice.

[Bodo]

@dusx

the file is not corrupted it plays completly smooth on other machines / software - and Izzy and a Laptop with these specs should be able to play one mp4 (i know hap is better) ....???? are there any known incompatibility with izzy and the newest win11????