Several MP4 files hosted on this site are encoded using H.265 (HEVC). While most browsers support playback, Mozilla Firefox 118.0.1 returns an error:
Suggestions such as enabling pass-through support or providing a more descriptive error message have been made; alack, to no avail as yet.
Handy one-liner for returning the encoding type of all MP4 files in the current directory:
find . -type f -name "*.mp4" -exec sh -c 'echo -n "{}: "; ffprobe -v error -select_streams v:0 -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "{}"' \;/misc | Sep 29, 2023