it seems like the camera is switching off at that point
Are you saying the camera supports recording to multiple file segments?
Can you make a romlog and upload it here
I played around with video bit rate settings (75%); it always crashes when finishing the 3rd file, again 4,3GB each.
What happens if you set a different bitrate? Does it crash after 3 files, or after the time you mentioned?
How are those files named?
It might be that the number of files per recording is limited too.
I tried smaller (75%) and larger (150%) CBR bitrates and a VBR recording, the camera always crashes once the 3rd video file is written, though the video length changes greatly with the configured bitrate.
Incidentally, the firmware update method will not work as long as those 3 files are on the SD card; only once they are deleted the camera boots into CHDK
MVI_4708.MP4MVI_4709.MP4MVI_4710.MP4
QuoteIt might be that the number of files per recording is limited too.Should I open a ticket?
Which step fails? No upgrade option in Canon menu or the camera fails to start once you select update?
The latter. After the crash the camera turns off. So I turn it on again (long press on the mode selection button on the top). Navigate in the menu to firmware update, select CHDK firmware. The camera reboots, screen stays black, green LED flashes, won't come out of it unless power is cut.
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