Canon EOS REBEL T7i Instruction Manual page 277

Movie Files Exceeding 4 GB
Even if you shoot a movie exceeding 4 GB, you can keep shooting
without interruption.
Using SD/SDHC cards formatted with the camera

If you use the camera to format an SD/SDHC card, the camera will
format it in FAT32.
With a FAT32-formatted card, if you shoot a movie and the file size
exceeds 4 GB, a new movie file will be created automatically.
When you play back the movie, you will have to play each movie file
individually. Movie files cannot be played back automatically in
consecutive order. After the movie playback ends, select the next
movie and play it back.
Using SDXC cards formatted with the camera

If you use the camera to format an SDXC card, the camera will
format it in exFAT.
When using an exFAT-formatted card, even if the file size exceeds 4
GB during movie shooting, the movie will be saved as a single file
(rather than being split into multiple files).
Movie Shooting Time Limit
The maximum recording time of one movie clip is 29 min. 59 sec. If the
movie shooting time reaches 29 min. 59 sec., the movie shooting will
stop automatically. You can start shooting a movie again by pressing
the <A> button. (The movie will be recorded as a new movie file.)
When downloading movie files exceeding 4GB to a computer, use either the
EOS Utility (p.474) or a card reader (p.478). Movie files exceeding 4GB will
not be downloaded if you perform image download with the function of the
computer's operating system.
3 Setting the Movie Recording Size
277