[FFmpeg-user] FFmpeg, webm and Firefox

[Tom Evans]

On Thu, Apr 25, 2013 at 12:39 PM, Hartmut <spieluhr at ewetel.net> wrote:
> I have an unusual and new problem with webm-files made by ffmpeg and Firefox
> as player. I have made several webm's from DV-material for my website and
> they were all played ad hoc and fine. 4 weeks ago I converted another video
> in the same way to webm. But this one is not played by FF except I forward
> the video by 3 seconds and click play then. Confusion!
>
> So I tried some of my old videos and all was fine. I tried the new video
> with Chrome and Opera and they played this video. But Firefox not. Why? The
> only things that are changed in the time between the last - playing - video
> and this new ist the version of Firefox and the version of ffmpeg. So I
> tried an older version of FF to no avail. So it must be a problem caused by
> ffmpeg ...
>
> This is the command-line for converting (DV is 720x576, 16:9):
> ffmpeg -i Rohfilme/infile.dv -c:v libvpx -b:v 1000k -c:a libvorbis -b:a 128k
> -ar 44100 -ac 2 Rohfilme/outfile.webm
> or
> ffmpeg -i Rohfilme/infile.dv -c:v libvpx -s 1024x576 -b:v 1000k -c:a
> libvorbis -b:a 128k -ar 44100 -ac 2 Rohfilme/outfile.webm
>
> You can try an old video at:
> http://hartmut.homelinux.org/Oldtimer/Bella/Videos/Bellatreffen-2009.html
> and the new one at: http://hartmut.homelinux.org/Downloads/Hochzeit.webm
>

This won't help you but fwitw, they both work in Chromium/FreeBSD.

Cheers

Tom