Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 450)

General Movie Recording Precautions
Guidance Display Before Recording
Warning Indicator Display in Movie Recording
Guidance Display Before Recording
Guidance may be displayed when the camera starts up, after settings are adjusted, or in
other situations.
The guidance warns that the camera may become hot internally if movies are recorded
under the current settings, and that if you continue recording, the camera may turn off
automatically.
If you will record over an extended period, consider changing the setting indicated by the
guidance (movie recording size), so that you can record without the camera displaying
guidance.
If you prefer to record without changing the settings, note any warning indicators displayed
as you record.
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