Hello, In the Message; Subject : Re: firefox changed behavior "no video with supported mime-type" Message-ID : <20240917183340.4f98ebf0@acer-suse.fritz.box> Date & Time: Tue, 17 Sep 2024 18:33:40 +0100 [DH] == Dave Howorth <dave@howorth.org.uk> has written: DH> On Tue, 17 Sep 2024 18:49:37 +0200 DH> Simon Becherer <simon@becherer.de> wrote: [...] SB> > here a own movie where i am pretty sure it was working before. SB> > SB> > https://www.becherer.de/Homepage/Kloepper/cobot-schweissen.MOV SB> > it shows the error "no video with supported mime-type" [...] DH> Hmm, FF doesn't play it but I downloaded it and VLC is quite happy to DH> play it. It says Codec: MPEG-H Part2/HEVC (H.265) (hvc1) I can well DH> believe my FF doesn't understand that but maybe it could be persuaded. DH> Another data point: DH> $ file cobot-schweissen.MOV DH> cobot-schweissen.MOV: ISO Media, Apple QuickTime movie, Apple QuickTime DH> (.MOV/QT) Good point! The difference is that vlc is built with ffmpeg-4.4.4. If you build vlc with a later version of ffmpeg, playback of Codec: MPEG-H Part2/HEVC (H.265) (hvc1) in vlc will result in no video with sound. However, MPlayer, which uses the latest ffmpeg, plays back all HEVC codecs without any problems. In fact, it correctly recognizes the file format and plays back the file without any problems. I'm having trouble with this..... (_ _? Incidentally, in my environment, 1. seamopnkey - OK 2. vivaldi - NG 3. Firefox-esr - NG No video with supported format and MIME type) 4. ffplay (7.0.2) - No video with sound 5. MPlayer (1.5.r38637-13) - OK 6. xine (1.2.3, built with ffmpeg 7.0.2) - No video no sound What happens.....? Best Regards. --- ┏━━┓彡 Masaru Nomiya mail-to: nomiya @ lake.dti.ne.jp ┃＼／彡 ┗━━┛ "During testing, Sakana found that its system began unexpectedly attempting to modify its own experiment code to extend the time it had to work on a problem." -- Research AI model unexpectedly attempts to modify its own code to extend runtime (ars TECHNICA) --