[gst-devel] avi (MJPEG) to mpeg or something else

Wim Taymans wim at fluendo.com
Fri Feb 2 16:44:35 CET 2007


On Fri, 2007-02-02 at 15:35 +0100, Andreas Volz wrote:
> Hello,
> 
> I have this video:
> 
> sarah.avi: RIFF (little-endian) data, AVI, 320 x 240, 10.00 fps, video:
> Motion JPEG, audio: uncompressed PCM (mono, 8000 Hz)
> 
> For my application I try to convert it with gstreamer into a mpeg,
> divx or theora video. I tried the gst-launch command from [1], but it
> failed with:
> 
> > LC_ALL=C gst-launch-0.8 filesrc sarah.avi ! avidemux name=demux
> > demux.audio_00 ! decodebin ! audioconvert ! audioresample !
> > autoaudiosink   demux.video_00 ! queue ! decodebin !
> > ffmpegcolorspace ! videoscale ! autovideosink
> 
> WARNING: erroneous pipeline: no element "audioresample"
>          Trying to run anyway.
> RUNNING pipeline ...
> ERROR: from element /pipeline0/filesrc0: No file name specified for
> reading.
> ERROR: pipeline doesn't want to play.
> 
> Then I tried this:
> 
> > gst-launch-0.10 filesrc file://sarah.avi ! avidemux name=demux
> > demux.audio_00 ! decodebin ! audioconvert ! audioresample !
> > autoaudiosink   demux.video_00 ! queue ! decodebin !
> > ffmpegcolorspace ! videoscale ! autovideosink
> Setting pipeline to PAUSED ...
> ERROR: Pipeline doesn't want to pause.
> FEHLER: Von Element /pipeline0/filesrc0: Kein Dateiname zum Lesen
> angegeben.
> Zusätzliche Debugginginformation:
> gstfilesrc.c(967): gst_file_src_start (): /pipeline0/filesrc0
> Setting pipeline to NULL ...
> 
> (gst-launch-0.10:2646): GStreamer-WARNING **: loop detected in the
> graph !!
> FREEING pipeline ...
> 
> So any ideas the pipeline should look like?

try:

gst-launch-0.10 filesrc location=sarah.avi ! avidemux name=demux
 demux.audio_00 ! decodebin ! audioconvert ! audioresample !
 autoaudiosink   demux.video_00 ! queue ! decodebin !
 ffmpegcolorspace ! videoscale ! autovideosink

wim

> 
> BTW: Could gstreamer autodetect the video format input?
> 
> regards
> Andreas
> 
> [1]http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-avidemux.html
> 
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