Choppy motion in .mp4 videos seen on Sony A95L TV

[JARedmondWA]

I stream and capture videos from websites for my personal use. Sometimes the videos (.mp4 files, 1080p or 4K, at 60 FPS) have "choppy" motion if I play them on my Sony A95L TV (available as of about a month ago, ie, very new processor and software). I see the choppiness in playing/casting the videos via Plex, via Edge and via Chrome. I see the choppiness if I use the TV's ethernet capability to get to the video files directy.

I don't see choppiness if I play the videos on my computer monitor, eg, in VLC or MPV (or PP) or in Edge/Chrome without casting. Obviously, the processors/software are entirely different as between my TV and my computer monitor, but the smooth motion on my monitor suggests a "cure"/workaround for my TV may exist.

In cases where I can download a video from a website, I can play it on the TV via Plex without choppiness. I cannot, unfortunately, find anything in such a downloaded file that tells me why there is no choppiness. The only suggestive thing in such a file is that it's a constant 25 FPS (according to MediaInfo).

I've experimented (via HandBrake) with different FPS settings, to no avail.

My question: What settings in PP might help in getting .mp4 files with 60 FPS to show with smooth motion on my A95L TV?

[Ann Bens]

If you import those files back into Premiere are they still choppy?

If not the issue is with your tv.

If the source is 25 fps and you are exporting them to 60 fps don't think that is a good idea. Stick to 25 fps.

[R Neil Haugen]

That's probably an issue with the files themselves, quite possibly they are variable frame rate ... VFR ... meaning the actual frames captured per second varies constantly.

That can be converted to CFR ... constant framerate ... in Handbrake or ShutterEncoder if you set the options in their controls to do so.