Internal data flow error in Multipart(De)Mux's official document example

[k l]

OK, I built version 1.0.7 of gstreamer and the base, good, bad, ugly
plugtins. I replaced the system installed jpegparse (1.0.6) with the
compiled one. Now it works. So it seems to be a bug in jpegparse 1.0.6 then
- does gst have test cases? How is it not caught?

One question, why is a jpegparse needed in this case? In the future, how
should I diagnose not-negotiated error?

Thanks,
K.


On Fri, May 10, 2013 at 10:30 PM, k l <kludev at gmail.com> wrote:

> Hi Tim,
>
> I tried your suggestion. Still no luck. Still getting the not-negotiated
> error. I'm using Ubuntu 13.04 with the pre-packaged gst (1.0.6). I also
> tried compiling and installing my own gstreamer core with the source at [
> http://gstreamer.freedesktop.org/modules/gstreamer.html]. Both with the
> same result.
>
> Could you try 1.0.6 just to see if it's a bug fix between 1.0.6 - 1.0.7,
> or is it something wrong with my pipeline?
>
> Also, what's the general guideline for diagnosing not-negotiated error?
> Any way I can get more diagnostic info? I've tried invoking gst-launch with
> -v but it doesn't give much more info.
>
>
> Thanks!
> K
>
>
> gst-launch-1.0 -v -e filesrc location=/tmp/test.multipart ! multipartdemux
> ! image/jpeg,framerate=\(fraction\)5/1 ! jpegparse ! jpegdec ! videoconvert
> ! ximagesink
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> /GstPipeline:pipeline0/GstCapsFilter:capsfilter1: caps = image/jpeg,
> framerate=(fraction)5/1
> ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal
> data flow error.
> Additional debug info:
> gstbasesrc.c(2809): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstFileSrc:filesrc0:
> streaming task paused, reason not-negotiated (-4)
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> Freeing pipeline ...
>
>
>
> On Fri, May 10, 2013 at 3:07 AM, Tim-Philipp Müller <t.i.m at zen.co.uk>wrote:
>
>> On Thu, 2013-05-09 at 20:43 -0700, k l wrote:
>>
>> Hi,
>>
>> > In the official documents for MultipartMux [1] and Multipartdemux [2],
>> > there are two sample pipelines as below. It's fine when I run the
>> > first pipeline to encode. But when running the sencond pipeline to
>> > decode, it gave me the following error.
>> >
>> > Encoding video to to jpeg multipart:
>> >
>> >   $ gst-launch-1.0 videotestsrc ! video/x-raw,
>> > framerate='(fraction)'5/1 ! jpegenc ! multipartmux ! filesink
>> > location=/tmp/test.multipart
>> >
>> >
>> > Decoding video from jpeg multipart:
>> >
>> >
>> >   $ gst-launch-1.0 filesrc location=/tmp/test.multipart !
>> > multipartdemux ! jpegdec ! videoconvert ! ximagesink
>> >
>> >
>> > Error Message for the above demux pipeline:
>> > streaming task paused, reason not-negotiated (-4)
>>
>> This works for me (with git master, and 1.0.7):
>>
>> gst-launch-1.0 filesrc location=/tmp/test.multipart ! multipartdemux !
>> image/jpeg,framerate=\(fraction\)5/1 ! jpegparse ! jpegdec !
>> videoconvert ! ximagesink
>>
>> I will update the docs, thanks!
>>
>> Cheers
>>  -Tim
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>
>
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