[FFmpeg-user] header information in generated avi file?

Peter Wallis p.wallis at dcs.shef.ac.uk
Tue Mar 13 10:44:39 CET 2012

Hi Carl,
  There does seem to be output  using the ffmpeg command I described (I can
look at it with a HEX editor) but it is a bit hard to use WMP because I'm
on a linux box.  Annoyingly, JMStudio plays it (bad timing problem
mentioned) but the Java source for JMStudio is no longer supplied
officially and the version I can get use beans technology rather than
implementing things as described in the guide.

producing video only and a fixed number of frames (15 at -r 5) produces no

It is a little difficult to run the audio only through the code because it
is designed to run avi files converted using ffmpeg - that is why I am
producing video from stills actually.


On 13 March 2012 07:09, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Peter Wallis <p.wallis <at> dcs.shef.ac.uk> writes:
> > ffmpeg -loop_input -shortest -r 5 -i f01.jpg -i f01.wav -acodec pcm_s16le
> > -ar 44100 -ac 1 -vcodec mjpeg -y f01.avi
> Complete, uncut output missing.
> Does WMP play the resulting file?
> > The resulting avi file works on most players (although there is in some
> > cases confusion about when the stop playing) but, when I play it with an
> > application I have written using JMF (I know ...) I get no sound and no
> > image - although the duration is correct.  The JMF application works on
> > other avi files.
> Does it play the result of
> ffmpeg -loop_input -r 5 -i f01.jpg -vcodec mjpeg -vframes 100 video.avi
> ffmpeg -i f01.wav -acodec pcm_s16le audio.avi
> ?
> Carl Eugen
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