I'm trying to play videos I recorded from my mobile phone (the stock video / photo app on a Samsung Galaxy On7).
When I click them I get the following error message from Totem on Fedora 28:
H.264 (High Profile) decoder is required to play the file, but is not installed
Clicking "Find in programs" doesn't find an appropriate codec.
file tool labels them as "ISO Media, MP4 v2 [ISO 14496-14]".
This is the error log when I run Totem from the CLI:
** Message: 12:57:35.979: Missing plugin: gstreamer|1.0|totem|H.264 (High Profile) decoder|decoder-video/x-h264, level=(string)4, profile=(string)high, interlace-mode=(string)progressive, chroma-format=(string)4:2:0, bit-depth-luma=(uint)8, bit-depth-chroma=(uint)8 (H.264 (High Profile) decoder)