Re: Video narration

[Laura Lazzati]

Hi! :)



On Fri, Apr 26, 2019 at 7:01 PM Paul Garlick
<address@hidden> wrote:
>
> Hi Laura and All,
>
> I have determined the cause of the playback problems with Firefox and
> pushed a fix to the  videos.git repository.
Great :)
>
> Essentially, a limitation of the treatment of opus audio streams in
> Firefox means that videos with gaps in the audio stream are not played
> properly.
>
> There were two parts to the fix.  First, the audio streams need to be
> padded with silence to match the duration of the video streams.  Then,
> the concatenation of the audio streams needs to be done separately from
> the video streams.  The two streams are the same duration and may be
> joined without re-encoding.
>
> A consequence of the new approach is that the cli sessions need to be
> checked to ensure that the duration of the video streams are (slightly)
> longer than the audio streams.  Otherwise, the audio streams will be
> truncated.
>
> I have made a start with the 01-installation-from-script video.  I am
> using Firefox version 66.0.3 to test.
Ok I will go on with the followings then!
>
> Can others confirm that the new method works with their browsers and
> players?
Sure :)

Regards :)
Laura