Choppy video from the X-T4

[murigius 2]

I have a new X-T4 w. an 18-55mm lens.

I’ve just started shooting video at 4K, 60p, 400 Mbps

When I upload the stills and video by putting the SD card in my MacBook Pro then load the video files in Final Cut Pro, or even watch them in QuickTime player……. 3-4 videos are all choppy and jerky.

The MacBook Pro has a 2.5 GHz Quad Core processor; 16GB of memory; a NVIDIA GeForce 2GB graphics card, and I’m running Mac OS 10.15.7

I have 211 GB available disc space.

Yet, when I view the footage the X-T4 LCD, it’s flawless, even the sound recorded.

What am I doing wrong? Should I be recording at a lesser bitrate and fps?

Thanks for any help!

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Hi,

This might be interesting too: Fuji X Lenses

[Fujimann 3]

I have this same problem with same equipment. Would love to hear/see an answer to this also.

[willtoride 0]

4k 60fps 400Mbps means you're using the H265 codec. It's very cpu/gpu intensive. My 2016 MBP struggles to play H265 smoothly but my main editing machine plays them back fine, so this could be the issue you're seeing. Try H264, which will limit you to 200Mbps or maybe create proxies.

[murigius 2]

Thanks, Willtoride. It's beginning to make sense to me now. I guess I was really stressing the CPU.

[Nicky 1]

The answer is to use a proxy workflow

 

Edited November 26, 2020 by Nicky

[carlo macchiavello 1]

finalcutproX when import so heavy files must do "optimized media" to manage that files.
check on manual.

[murigius 2]

Thanks, Carlo! I admit that I haven't been too deep into the manual... I've seen that "optimized media" but wasn't sure what it was. Now I'll try it.