[libav-tools] WebM does not play in Firefox any more

Luca Barbato lu_zero at gentoo.org
Sun May 4 10:23:08 CEST 2014


On 04/05/14 01:21, Torsten Römer wrote:
> I created quite a few WebM videos with avconv and they all used to play
> fine in Firefox and other browsers.
> 
> The recent upgrade to kubuntu 14.04 seems to have included a new version
> of avconv, and recently there was a Firefox update to 29.0.
> Now WebM videos don't play in Firefox any more, but still play well in
> Chromium and Rekonq, as well as in all video players I have tried.
> 
> WebM videos created with the older avconv version still play fine in
> Firefox however.
> 
> So normally I would say that it is a Firefox issue but why do WebM
> videos created with the older libav release still play? Anything I can
> try, should I downgrade or try some current snapshot?
> 
> The current versions are:
> Writing application: Lavf54.20.3
> Writing library:     Lavf54.20.3
> Writing application: Lavc54.35.0
> 
> The older ones are:
> Writing application: Lavf53.21.1
> Writing library:     Lavf53.21.1
> Writing application: Lavc53.35.0

Thanks for reporting we'll need to check and see where the problem is
(and probably we'll have to workaround it on our side =\)

lu



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