IE11 doesn't play mp4-file (invalid source) in html5

[rayon]

Hello pros

Problem:
converted mp4-file (h.264 + AAC) won't play in IE 11 (html5) - result: invalid source.

This occurs only when I transcode the source video with video transformation filter = on. Same file, same transcoding options (without transformation filter) doesn't make problems - any suggestions?

thank you for your help.
ray

[Jean-Baptiste Kempf]

Maybe you need to make an infinite mp4 file. It's not easy with VLC.