Q3 video quality degrades over 5 minutes

[Shellvedge]

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I’ve recorded easily over 50 videos so far with the C4K at 29.98 fps and will record for hour long sessions, obviously with the 29 minute recording so I restart it. But I’ve never had any issues with quality. There are some limitations with usability when there are a lot of subjects in motion but all within expectations for a 60 mp fixed lens compact camera. The image stabilization can cause some jello like wobbles but nothing where the sharpness or the focus point melts. I also shoot in L LOG ALL I or in 4k H264 when I’m just shooting a quick family video and want to transfer it to my phone. 
 

seeing the actual video instead of single frames at 800% would be helpful in diagnosing what if any issue exists. 

[Shellvedge]

I just recorded 27 minutes in C8K to the internal SD and oversampled C4K to the Ninja V+. No quality degraded throughout. The internal and external recording were very close except a bit more contrast and shadow detail in the external recording due to the 422 depth. 
 

i shot in auto focus and manual focus. 
 

powered externally using a 99 WH V mount battery powering both the Ninja and the Q3