[Libav-user] Fwd: ffmpeg converted swf can't play audio in flash player

黄轩宇 xuanyu.huang at gmail.com
Thu Feb 14 13:58:08 CET 2013

Hi Carl

For 'versions on Apr, May and Jun of 2012 do not work', I mean I downloaded
executable, and run those executable directly with command line option "-i
input.mp4 out.swf".

For "ffmpeg at about May 2012 works" I mean our application uses ffmpeg
libraries compiled on code released at about May 2012. Our application uses
ffmpeg API to do conversion, and it works.

It failed on latest Zeranoe build, and today I also compiled on Ubuntu with
latest code, and converted swf still has problem.


---------- Forwarded message ----------
From: Carl Eugen Hoyos <cehoyos at ag.or.at>
Date: 2013/2/14
Subject: Re: [Libav-user] ffmpeg converted swf can't play audio in flash
To: libav-user at ffmpeg.org

黄轩宇 <xuanyu.huang at ...> writes:

> I also tried ffmpeg executable of latest version,
> versions on Apr, May and Jun of 2012. None swf file
> generated by them can play audio in flash player.
> The command I used is the simplest form:
> ffmpeg -i input.mp4 output.swf
> Since current version of our application uses ffmpeg
> at about May 2012, and it can generate correct swf.

This is very difficult to understand:
Above, you write that "versions on Apr, May and Jun of 2012"
do not work for you (iiuc).
Now, "ffmpeg at about May 2012" works fine.

Could you elaborate?

Or, even better: If you compile yourself, use git bisect to
find the change introducing the regression, if you are using
Zeranoe builds use http://ffmpeg.zeranoe.com/builds/win32/static/
to find the first version not working (and the last one working).

Carl Eugen

Libav-user mailing list
Libav-user at ffmpeg.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ffmpeg.org/pipermail/libav-user/attachments/20130214/115e6546/attachment.html>

More information about the Libav-user mailing list