[gst-devel] example doesn't work
thiagossantos at gmail.com
thiagossantos at gmail.com
Sun Oct 17 18:33:12 CEST 2010
On Sun, Oct 17, 2010 at 1:15 PM, Norbert Stuhrmann <stuhrman at stanford.edu>wrote:
> Hi,
>
> I use snapshot=false for pngenc during the creation of the files. All
> 1000 files are created. pngdec which I use in the video creation
> pipeline does not have a property snapshot. Aslo, judging from the
> execution time, I have the impression that all images run through the
> pipeline somehow.
>
Sorry, misread your launchline.
You need to provide a framerate to pngdec, otherwise it will assume it is a
single image decoding and push EOS right after the first frame.
Something like this should work:
gst-launch multifilesrc location=/tmp/test%05d.png caps="image/png,
framerate=25/1" ! pngdec ! ffmpegcolorspace ! autovideosink
>
> Norbert
>
>
>
> On 10/17/2010 06:28 AM, thiagossantos at gmail.com wrote:
> >
> >
> > On Wed, Oct 13, 2010 at 8:41 PM, Norbert Stuhrmann
> > <stuhrman at stanford.edu <mailto:stuhrman at stanford.edu>> wrote:
> >
> > Hi,
> >
> > another person was able to confirm this on another machine. Does
> > somebody know why this isn't working?
> >
> >
> > Try setting snapshot=false on pngenc. By default, pngenc sends an EOS
> > after a frame is encoded.
> >
> >
> > Thanks,
> >
> > Norbert
> >
> >
> > On 10/10/2010 12:08 AM, Norbert Stuhrmann wrote:
> > > Hi,
> > >
> > > I tried the example on
> > > http://www.gstreamer.net/wiki/MultiFileSrc
> > >
> > > However, the output file seems to contain only one frame.
> > >
> > > Here is what I do in detail:
> > >
> > > > gst-launch --version
> > > gst-launch-0.10 version 0.10.28
> > > GStreamer 0.10.28
> > > https://launchpad.net/distros/ubuntu/+source/gstreamer0.10
> > >
> > > > gst-launch videotestsrc num-buffers=1000 ! pngenc
> > snapshot=false !
> > > multifilesink location=test%05d.pngSetting pipeline to PAUSED
> ...
> > > Pipeline is PREROLLING ...
> > > Pipeline is PREROLLED ...
> > > Setting pipeline to PLAYING ...
> > > New clock: GstSystemClock
> > > Got EOS from element "pipeline0".
> > > Execution ended after 10432607595 ns.
> > > Setting pipeline to PAUSED ...
> > > Setting pipeline to READY ...
> > > Setting pipeline to NULL ...
> > > Freeing pipeline ...
> > >
> > > > gst-launch multifilesrc location=test%05d.png
> > > caps="image/png,framerate=30/1,pixel-aspect-ratio=1/1" ! pngdec
> !
> > > ffmpegcolorspace ! video/x-raw-yuv,format=\(fourcc\)I420 !
> > theoraenc !
> > > oggmux ! filesink location=output.ogg
> > > Setting pipeline to PAUSED ...
> > > Pipeline is PREROLLING ...
> > > Pipeline is PREROLLED ...
> > > Setting pipeline to PLAYING ...
> > > New clock: GstSystemClock
> > > Got EOS from element "pipeline0".
> > > Execution ended after 457879 ns.
> > > Setting pipeline to PAUSED ...
> > > Setting pipeline to READY ...
> > > Setting pipeline to NULL ...
> > > Freeing pipeline ...
> > >
> > > > ls -la output.ogg
> > > -rw-r--r-- 1 norbert norbert 11127 2010-10-10 00:03 output.ogg
> > >
> > > If I open the file with totem I see only one frame (the first
> frame,
> > > i.e. test0000.png) and the viedo length is 0 seconds.
> > >
> > >
> > > Thanks,
> > >
> > > Norbert
> > >
> > >
> >
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> > --
> > Thiago Sousa Santos
> >
> >
> >
> >
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--
Thiago Sousa Santos
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