Panasonic GH5 Video Recording Limits

Format/Codec	Limit
All Formats and Frame Rates	Unlimited

Notes

When using an SDHC memory card and/or recording in AVCHD formats:
- If the file exceeds 4 GB, recording will continue and a new file will be created automatically.
When using an SDXC memory card:
- If the file exceeds 96 GB or recording time exceeds 3 hours and 4 minutes, recording will continue and a new file will be created automatically.
Available recording time for various memory card sizes can be found on page 32-33 in the Owner’s Manual for advanced features.
The maximum available continuous recording time will be displayed on the screen.
An increase of the camera’s internal temperature may cause recording to stop before the maximum recording time is reached.

Sources: Panasonic GH5 Owner’s Manual for advanced features (English) - pages 32-33