Can not play MKV

Fri Sep 30 08:30:06 UTC 2016

Hello, Sudip

Sorry for stupid question, but how to do it? [😊]

Can you give step by step description of how to dump pipeline in dot file, please?

Using gst-play-1.0 with some keys?

I have dot utility from graphviz.org.

Mikl

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From: sudipj [via GStreamer-devel] <ml-node+s966125n4679863h2 at n4.nabble.com>
Sent: Friday, September 30, 2016 9:02:47 AM
To: Michael Yarochkin
Subject: Re: Can not play MKV

Duncan,

You need to export the variable as below

export GST_DEBUG_DUMP_DOT_DIR=/tmp (or any dir)

install dot utility ( from graphviz package if you are usbing ubuntu )

For e.g
dot -Tpng /tmp/0.00.00.710265346-gst-launch.PAUSED_PLAYING.dot > pipeline.png

eog pipeline.png

Sudip

On 30 September 2016 at 12:18, Mikl [via GStreamer-devel] <[hidden email]</user/SendEmail.jtp?type=node&node=4679863&i=0>> wrote:

Hello, Duncan

Thank you for the answer.

I can play back video using gst-play-1.0.

Can you be more specific, please,  about how to "them dump the resulting pipeline to a dot file".

It is no options at gst-play-1.0 to dump constructed pipeline in console.

________________________________
From: Duncan Palmer-2 [via GStreamer-devel] <ml-node+[hidden email]<http:///user/SendEmail.jtp?type=node&node=4679861&i=0>>
Sent: Friday, September 30, 2016 12:02:07 AM
To: Michael Yarochkin
Subject: Re: Can not play MKV

There's a few potential problems here. Rather than figuring out what they are, I'd suggest you just try playing it with gst-play-1.0 first, rather than manually constructing the pipeline. You can them dump the resulting pipeline to a dot file and view it if you'd like to get an idea of how to manually construct.

On 26 September 2016 at 18:13, Mikl <[hidden email]<http:///user/SendEmail.jtp?type=node&node=4679857&i=0>> wrote:
Hello,

I have MKV, recodred my gstreamer
  video: appsrc ! 'video/x-raw-rgb,width=800,height=600,framerate=24/1' !
jpegenc ! matroskamux ! filesink
  2 subtitles truks: appsrc ! '"text/x-raw' ! matroskamux ! filesink

when i am trying to play it
gst-launch-1.0 filesrc location=C:\\test\\test.mkv ! matroskademux name=mux
mux.video_0! jpegdec ! autovideosink

i have this error

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstMatroskaDemux:mux: Internal
data stream error.
Additional debug info:
matroska-demux.c(4759): gst_matroska_demux_loop ():
/GstPipeline:pipeline0/GstMatroskaDemux:mux:
streaming stopped, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

What is wrong?
Can you help me please to play it

Thank you in advance.

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