If your sd card is to slow and doesnt have the read write speeds necessary to handle the size of the video or if its damaged or corrupt. Check
Where the main save location is for your camera app, then you can test by changing to internal storage and see if that makes a difference.
Camera app>setting icon>storage location>internal storage
If it already on internal then your issue is most likely unrelated to the sd card. Hope this helps you solve your problem.
This could be an SD card issue. Is the card almost full? You could download "A1 SD Bench" from the Playstore and benchmark it. Personally, I only use the Extreme or Extreme Pro cards, as I find them better but they do cost more. Running a faster SD does actually help with the overall performance of your device also.
It is not the sd card
The sandisisk etreme ultra is more than enough for that.
However i want the photo of the sd csrd you have in your phone, there are plenty of fake ones and i need to check your