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

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On Sat, 2023-12-02 at 13:42 +0000, Phil Wyett wrote:
> 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
> 

Hi,

I had a play with one of my ffmpeg video conversion scripts.

For the most compatible MP4 to deliver to your website visitors, I would use the 'main' profile with
ffmpeg. As an extra, I looked at restricting the 'bitrate' and also using the 'veryslow' preset to
try for better compression.

The bash script attached I think gives wide compatibility and good end file size - around 10.6MB. I
hope this is of help to you in its current form of if you wished to make changes to it for your
needs.

Regards

Phil

-- 
Playing the game for the games sake.

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Firefox 115.5.0esr(64-bit) can't show mp4 Van Snyder <van.snyder@sbcglobal.net> - 2023-12-01 23:20 +0100
  Re: Firefox 115.5.0esr(64-bit) can't show mp4 Bret Busby <bret@busby.net> - 2023-12-02 00:10 +0100
    Re: Firefox 115.5.0esr(64-bit) can't show mp4 Phil Wyett <philip.wyett@kathenas.org> - 2023-12-02 10:20 +0100
      Re: Firefox 115.5.0esr(64-bit) can't show mp4 Bret Busby <bret@busby.net> - 2023-12-02 13:00 +0100
        Re: Firefox 115.5.0esr(64-bit) can't show mp4 Phil Wyett <philip.wyett@kathenas.org> - 2023-12-02 13:40 +0100
      Re: Firefox 115.5.0esr(64-bit) can't show mp4 Phil Wyett <philip.wyett@kathenas.org> - 2023-12-02 14:50 +0100
        Re: Firefox 115.5.0esr(64-bit) can't show mp4 Phil Wyett <philip.wyett@kathenas.org> - 2023-12-02 17:00 +0100
    Re: Firefox 115.5.0esr(64-bit) can't show mp4 Bret Busby <bret@busby.net> - 2023-12-02 12:50 +0100
  Re: Firefox 115.5.0esr(64-bit) can't show mp4 jeremy ardley <jeremy.ardley@gmail.com> - 2023-12-02 03:30 +0100

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