The Panasonic LUMIX GH4 has no video recording limit, but only for some formats. That limit is also dependent upon multiple factors like camera settings, media storage size, camera power, and internal camera temperature. See details and notes below for more information.
Maximum continuous video recording times for the Panasonic LUMIX GH4
1If the file size exceeds 4GB the motion picture file will be divided, but recording will continue without interruption.
2You can continuously record a motion picture up to 29 minutes 59 seconds or until the file size reaches 4GB.
3Since the file size becomes larger with [FHD], recording with [FHD] will stop before 29 minutes 59 seconds.
An increase of the camera’s internal temperature may cause recording to stop before the maximum recording time is reached.