The GH5 is an exceptionally capable video camera in addition to its outstanding stills capabilities. The flagship feature is UHD 4K video at up to 60 fps, though another excellent spec is the ability to record 4:2:2 10-bit files at resolutions up to DCI and UHD 4K at 24/30 fps. A full-size HDMI port is present on the camera for high-quality output at 4:2:2 10-bit in all settings for use with external monitors and recorders. The camera also offers high bit-rate recording for highly detailed images free of compression artifacts.

For more advanced users, multiple picture styles are available to provide a more gradable image, such as CINELIKE V and CINELIKE D, as well as an in-camera LUT to make monitoring easier. Also, users will have access to overcranking and undercranking settings which provide speeds up to 2.5x slower in 4K (60 fps) and 7.5x slower in Full HD (180 fps). Also, a 4K Anamorphic mode is available, which will let you record in a proper 4:3 ratio for adjustment in post-production.

The GH5 is designed to be an expandable system, with multiple options available to help improve video recording capabilities. Examples of this are an optional V-Log L upgrade and separately available accessories such as the XLR Microphone Adapter that provides XLR inputs and physical controls through a hot shoe connection. Users can also use standard microphones and headphones via the 3.5mm input and output jacks.