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Re: Firefox 115.5.0esr(64-bit) can't show mp4



On Sat, 2023-12-02 at 09:06 +0000, Phil Wyett wrote:
> On Sat, 2023-12-02 at 00:48 -0800, Van Snyder wrote:
> > On Sat, 2023-12-02 at 07:00 +0800, Bret Busby wrote:
> > > On 2/12/23 06:10, Van Snyder wrote:
> > > > When I try to view a mp4 video in Firefox 115.5.0esr(64-bit) on
> > > > Debian 
> > > > GNU/Linux 10 (buster), it puts up a sad-face window saying "No
> > > > video 
> > > > with supported format and MIME type found." It doesn't offer to
> > > > download 
> > > > the file, or play it with an external application.
> > > > 
> > > > ffmpeg is installed and up-to-date.
> > > > 
> > > > Can it be made to work?
> > > > 
> > > Perhaps, if you specified the URL of the file, it might be a step on
> > > the 
> > > way t6o describing the problem...
> > 
> > http://vandyke.mynetgear.com/AuraMLS_SH2009.mp4
> > 
> > The same video is available as avi, and that works fine with Firefox by
> > launching an external viewer such as vlc or dragon. I would expect
> > Firefox to offer to download the file or choose a viewer instead of the
> > sad-face window.
> > 
> > > 
> > > ....
> > > Bret Busby
> > > Armadale
> > > Western Australia
> > > (UTC+0800)
> > > .................
> > > 
> > 
> 
> Hi,
> 
> The problem here seems to stem from the video being 'Simple Profile' for MP4.
> 
> https://en.wikipedia.org/wiki/MPEG-4_Part_2
> 
> Some further testing maybe in order and an issue submitting if this is widespread.
> 
> Regards
> 
> Phil
> 

Hi,

It seems the 'simple profile' falls under H.263, which no longer has major browser support.

https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Video_codecs#h.263

Regards

Phil

-- 
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