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Duration is not saved in matroska with mjpeg live source

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Speedy Gonzales-2

Duration is not saved in matroska with mjpeg live source

Hi,

I'm trying to save mjpeg stream from Axis camera to a file using
matroska container. I use the following pipeline:

gst-launch-0.10.exe -e souphttpsrc
location="http://gizycko.axiscam.net/axis-cgi/mjpg/video.cgi?camera=3&resolution=320x240"
do-timestamp=true ! multipartdemux ! "image/jpeg,width=320,height=240"
! matroskamux ! filesink location="x:\data.mkv"

The resulting file plays correctly, but it looks like it is incomplete
and mkvinfo reports that segment has duration=0. I can only seek using
GST_FORMAT_TIME and can't query duration.

mkvinfo dump:
http://www.pastebin.com/f1fb26ee4

As far as I know, this issue should have been fixed:
https://bugzilla.gnome.org/show_bug.cgi?id=504081

The parameter -e should force EOS on CTRL-C and matroskamux should
write duration based on difference between timestamps of last and
first frame. For some reason it doesn't work.

I spend many hours on this and would appreciate any help.

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Florent THIERY-2

Re: Duration is not saved in matroska with mjpeg live source

Hi,

You need to emit an EOS for the muxer to properly close the file (and
report the total duration).

Florent

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Speedy Gonzales-2

Re: Duration is not saved in matroska with mjpeg live source

Hi,

Thanks for help.

I've found out that this case is described here:
http://www.gstreamer.net/wiki/FAQ#Whencapturingfromavideoand.2BAC8-oraudiosource.2Chowtomakerecordingstopcorrectly.3F

and here:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-libs/html/GstBaseSrc.html

Is there a tutorial on recording with GStreamer?

M. Gonzales

2010/2/21 Florent <[hidden email]>:

> Hi,
>
> You need to emit an EOS for the muxer to properly close the file (and
> report the total duration).
>
> Florent
>
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
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>

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Stefan Sauer

Re: Duration is not saved in matroska with mjpeg live source

In reply to this post by Speedy Gonzales-2

Am 20.02.2010 16:00, schrieb Speedy Gonzales:

> Hi,
>
> I'm trying to save mjpeg stream from Axis camera to a file using
> matroska container. I use the following pipeline:
>
> gst-launch-0.10.exe -e souphttpsrc
> location="http://gizycko.axiscam.net/axis-cgi/mjpg/video.cgi?camera=3&resolution=320x240"
> do-timestamp=true ! multipartdemux ! "image/jpeg,width=320,height=240"
> ! matroskamux ! filesink location="x:\data.mkv"
>
> The resulting file plays correctly, but it looks like it is incomplete
> and mkvinfo reports that segment has duration=0. I can only seek using
> GST_FORMAT_TIME and can't query duration.
>
> mkvinfo dump:
> http://www.pastebin.com/f1fb26ee4
>
> As far as I know, this issue should have been fixed:
> https://bugzilla.gnome.org/show_bug.cgi?id=504081
>
> The parameter -e should force EOS on CTRL-C and matroskamux should
> write duration based on difference between timestamps of last and
> first frame. For some reason it doesn't work.

Maybe you can post this information as a comment to that bug. Also please ensure
you have a version new enought to contain that fix (try git version if in doubt).

Stefan

>
> I spend many hours on this and would appreciate any help.
>
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel