[gst-devel] How I test the FLV demux plugin

michael mcygogo at gmail.com
Sun Dec 12 13:03:25 CET 2010


Hi Wim:
    Do you means that I just used the wrong srcpad for flvdemux ?

On Sun, Dec 12, 2010 at 7:42 PM, Wim Taymans <wim.taymans at gmail.com> wrote:

> On Sun, 2010-12-12 at 19:34 +0800, michael wrote:
> > I do not just want to play the FLV file, I want to demux the FLV file
> > trough the gstflvdemux plugin.
> > So maybe I should go on to look for the reason why the gstflvdemux
> > cannot work without the playbin.
> > I can demux the MP4 file following this :
> > gst-launch filesrc location=test.mp4 ! qtdemux name=demux
> > demux.video_00 ! queue ! filesink location=test.ves demux.audio_00 !
> > queue ! filesink location=test.aes
> > But why this  can NOT work with the flvdemux ?
>
> Because you use the wrong pad names. use gst-inspect to see the possible
> srcpad names.
>
> Wim
> >
> >
> >
> > On Sun, Dec 12, 2010 at 6:41 PM, sudarshan bisht
> > <bisht.sudarshan at gmail.com> wrote:
> >
> >
> >         Ok, it seems playbin takes care of caps negotiations correctly
> >         when "codec_data" is a part of caps.
> >
> >
> >         So does this solve your problem ? Or still you want to use
> >         your old pipeline ?
> >
> >
> >
> >
> >
> >
> >         On Sun, Dec 12, 2010 at 2:46 PM, michael <mcygogo at gmail.com>
> >         wrote:
> >                 Hi sadarshan:
> >                     I can play the file by your command:  gst-launch
> >                 -v playbin uri=file:///path/test.flv
> >
> >
> >
> >                 On Sun, Dec 12, 2010 at 3:53 PM, sudarshan bisht
> >                 <bisht.sudarshan at gmail.com> wrote:
> >                         I suggest you to use capsfilter, as you said
> >                         in your earlier mails that gst_pad_push
> >                         returns -1 , that means flvdemux is not able
> >                         to push buffer to the next element and it may
> >                         happen because of lack of caps negotiations.
> >
> >
> >                         By the way how did you create this test.flv
> >                         file ? and are you able to play this file with
> >                         other players ?
> >
> >
> >                         and give a try to following pipeline;
> >                         gst-launch -v playbin
> >                         uri=file:///path/test.flv
> >
> >
> >
> >
> >
> >                         On Sat, Dec 11, 2010 at 10:55 PM, Timothy
> >                         Braun <braunsquared at gmail.com> wrote:
> >                                 Your best bet is to use gst-inspect
> >                                 and look at what the various templates
> >                                 of the pads are. It sounds like you
> >                                 need to do some conversion somewhere.
> >
> >                                 Sent from my iPhone
> >
> >
> >                                 On Dec 11, 2010, at 8:46 AM, michael
> >                                 <mcygogo at gmail.com> wrote:
> >
> >
> >
> >                                 > Hi sudarshan:
> >                                 >      I followed your command, I got
> >                                 > information :
> >                                 > WARNING: erroneous pipeline: could
> >                                 > not parse caps "video/x-h264,\
> >                                 > pixel-aspect-ratio=(fraction)1/1,\
> >                                 >
> codec_data=(buffer)01640015ffe1001e67640015ac34e602808effc028402804000003000400000300ca3c58b67801000468e9bbcb\"
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> >                                 > On Sat, Dec 11, 2010 at 7:32 PM,
> >                                 > sudarshan bisht
> >                                 > <bisht.sudarshan at gmail.com> wrote:
> >                                 >         Ok, now can you try
> >                                 >         following,
> >                                 >
> >                                 >         gst-launch filesrc
> >                                 >         location=test.flv ! flvdemux
> >                                 >         name=demux demux.video_00 !
> >                                 >         queue !  "video/x-h264,
> >                                 >
> pixel-aspect-ratio=(fraction)1/1,
> codec_data=(buffer)01640015ffe1001e67640015ac34e602808effc028402804000003000400000300ca3c58b67801000468e9bbcb
> " ! filesink location=test.ves demux.audio_00 ! queue ! filesink
> location=test.aes
> >                                 >
> >                                 >
> >                                 >
> >                                 >         On Sat, Dec 11, 2010 at
> >                                 >         10:49 AM, michael
> >                                 >         <mcygogo at gmail.com> wrote:
> >                                 >                 Hi sudarshan:
> >                                 >                     I run it with
> >                                 >                 the -v option, and
> >                                 >                 the result  like
> >                                 >                 this:
> >                                 >
> >                                 >                 Setting pipeline to
> >                                 >                 PAUSED ...
> >                                 >                 Pipeline is
> >                                 >                 PREROLLING ...
> >                                 >
> /GstPipeline:pipeline0/GstFlvDemux:demux.GstPad:video: caps = video/x-h264,
> pixel-aspect-ratio=(fraction)1/1,
> codec_data=(buffer)01640015ffe1001e67640015ac34e602808effc028402804000003000400000300ca3c58b67801000468e9bbcb
> >                                 >                 ERROR: from
> >                                 >                 element
> /GstPipeline:pipeline0/GstFlvDemux:demux: Internal data stream error.
> >                                 >                 Additional debug
> >                                 >                 info:
> >                                 >                 gstflvdemux.c(2283):
> >                                 >                 gst_flv_demux_loop
> >                                 >                 ():
> /GstPipeline:pipeline0/GstFlvDemux:demux:
> >                                 >                 stream stopped,
> >                                 >                 reason not-linked
> >                                 >                 ERROR: pipeline
> >                                 >                 doesn't want to
> >                                 >                 preroll.
> >                                 >                 Setting pipeline to
> >                                 >                 NULL ...
> >                                 >
> /GstPipeline:pipeline0/GstFlvDemux:demux.GstPad:audio: caps = NULL
> >                                 >
> /GstPipeline:pipeline0/GstFlvDemux:demux.GstPad:video: caps = NULL
> >                                 >                 Freeing pipeline ...
> >                                 >
> >                                 >
> >                                 >                 I have found that
> >                                 >                 the in function:
> >                                 >
> gst_flv_demux_parse_tag_video() , the call gst_pad_push(demux->video_pad,
> outbuf) returned the -1;
> >                                 >
> >                                 >
> >                                 >                 On Sat, Dec 11, 2010
> >                                 >                 at 4:33 PM,
> >                                 >                 sudarshan bisht
> >                                 >                 <
> bisht.sudarshan at gmail.com> wrote:
> >                                 >                         Could you
> >                                 >                         run the same
> >                                 >                         pipeline
> >                                 >                         with -v
> >                                 >                         option and
> >                                 >                         paste the
> >                                 >                         log here ?
> >                                 >
> >                                 >
> >                                 >
> >                                 >                         On Sat, Dec
> >                                 >                         11, 2010 at
> >                                 >                         11:47 AM,
> >                                 >                         michael
> >                                 >                         <
> mcygogo at gmail.com> wrote:
> >                                 >
> >                                 >
> >                                 >                                 Hi
> >                                 >                                 all:
> >                                 >
> >                                 >                                 Now
> >                                 >                                 I am
> >                                 >
> learning some about the flv plugin--flvdemux, I try to demux my flv test
> file like this:
> >                                 >
> gst-launch filesrc location=test.flv ! flvdemux name=demux demux.video_00 !
> queue ! filesink location=test.ves demux.audio_00 ! queue ! filesink
> location=test.aes
> >                                 >
> >                                 >                                 But
> >                                 >                                 when
> >                                 >                                 I
> >                                 >                                 run
> >                                 >                                 it ,
> >                                 >                                 I
> >                                 >                                 just
> >                                 >                                 get
> >                                 >                                 the
> >                                 >
> information like this:
> >                                 >                                 Setting
> pipeline to PAUSED ...
> >                                 >
> Pipeline is PREROLLING ...
> >                                 >                                 ERROR:
> from element /GstPipeline:pipeline0/GstFlvDemux:demux: Internal data stream
> error.
> >                                 >
> Additional debug info:
> >                                 >
> gstflvdemux.c(2283): gst_flv_demux_loop ():
> /GstPipeline:pipeline0/GstFlvDemux:demux:
> >                                 >                                 stream
> stopped, reason not-linked
> >                                 >                                 ERROR:
> pipeline doesn't want to preroll.
> >                                 >                                 Setting
> pipeline to NULL ...
> >                                 >                                 Freeing
> pipeline ...
> >                                 >
> >                                 >
> >                                 >                                 I
> >                                 >                                 just
> >                                 >                                 want
> >                                 >                                 test
> >                                 >                                 the
> >                                 >
> flvdemux plugin , So How I fixed it? tks:)
> >                                 >
> >                                 >
> >                                 >
> ------------------------------------------------------------------------------
> >                                 >                                 Oracle
> to DB2 Conversion Guide: Learn learn about native support for PL/SQL,
> >                                 >                                 new
> >                                 >                                 data
> >                                 >                                 types,
> scalar functions, improved concurrency, built-in packages,
> >                                 >                                 OCI,
> >                                 >
> SQL*Plus, data movement tools, best practices and more.
> >                                 >
> http://p.sf.net/sfu/oracle-sfdev2dev
> >                                 >
> _______________________________________________
> >                                 >
> gstreamer-devel mailing list
> >                                 >
> gstreamer-devel at lists.sourceforge.net
> >                                 >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> >                                 >                         --
> >                                 >                         Regards,
> >                                 >
> >                                 >                         Sudarshan
> >                                 >                         Bisht
> >                                 >
> >                                 >
> >                                 >
> ------------------------------------------------------------------------------
> >                                 >                         Oracle to
> >                                 >                         DB2
> >                                 >                         Conversion
> >                                 >                         Guide: Learn
> >                                 >                         learn about
> >                                 >                         native
> >                                 >                         support for
> >                                 >                         PL/SQL,
> >                                 >                         new data
> >                                 >                         types,
> >                                 >                         scalar
> >                                 >                         functions,
> >                                 >                         improved
> >                                 >                         concurrency,
> >                                 >                         built-in
> >                                 >                         packages,
> >                                 >                         OCI,
> >                                 >                         SQL*Plus,
> >                                 >                         data
> >                                 >                         movement
> >                                 >                         tools, best
> >                                 >                         practices
> >                                 >                         and more.
> >                                 >
> http://p.sf.net/sfu/oracle-sfdev2dev
> >                                 >
> _______________________________________________
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> mailing list
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> gstreamer-devel at lists.sourceforge.net
> >                                 >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> ------------------------------------------------------------------------------
> >                                 >                 Oracle to DB2
> >                                 >                 Conversion Guide:
> >                                 >                 Learn learn about
> >                                 >                 native support for
> >                                 >                 PL/SQL,
> >                                 >                 new data types,
> >                                 >                 scalar functions,
> >                                 >                 improved
> >                                 >                 concurrency,
> >                                 >                 built-in packages,
> >                                 >                 OCI, SQL*Plus, data
> >                                 >                 movement tools, best
> >                                 >                 practices and more.
> >                                 >
> http://p.sf.net/sfu/oracle-sfdev2dev
> >                                 >
> _______________________________________________
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> >                                 >                 mailing list
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> gstreamer-devel at lists.sourceforge.net
> >                                 >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> >                                 >         --
> >                                 >         Regards,
> >                                 >
> >                                 >         Sudarshan Bisht
> >                                 >
> >                                 >
> >                                 >
> ------------------------------------------------------------------------------
> >                                 >         Oracle to DB2 Conversion
> >                                 >         Guide: Learn learn about
> >                                 >         native support for PL/SQL,
> >                                 >         new data types, scalar
> >                                 >         functions, improved
> >                                 >         concurrency, built-in
> >                                 >         packages,
> >                                 >         OCI, SQL*Plus, data movement
> >                                 >         tools, best practices and
> >                                 >         more.
> >                                 >
> http://p.sf.net/sfu/oracle-sfdev2dev
> >                                 >
> _______________________________________________
> >                                 >         gstreamer-devel mailing list
> >                                 >
> gstreamer-devel at lists.sourceforge.net
> >                                 >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >                                 >
> >                                 >
> >                                 >
> >                                 >
> ------------------------------------------------------------------------------
> >                                 > Oracle to DB2 Conversion Guide:
> >                                 > Learn learn about native support for
> >                                 > PL/SQL,
> >                                 > new data types, scalar functions,
> >                                 > improved concurrency, built-in
> >                                 > packages,
> >                                 > OCI, SQL*Plus, data movement tools,
> >                                 > best practices and more.
> >                                 > http://p.sf.net/sfu/oracle-sfdev2dev
> >                                 >
> _______________________________________________
> >                                 > gstreamer-devel mailing list
> >                                 > gstreamer-devel at lists.sourceforge.net
> >                                 >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >                                 >
> >
> >
> ------------------------------------------------------------------------------
> >                                 Oracle to DB2 Conversion Guide: Learn
> >                                 learn about native support for PL/SQL,
> >                                 new data types, scalar functions,
> >                                 improved concurrency, built-in
> >                                 packages,
> >                                 OCI, SQL*Plus, data movement tools,
> >                                 best practices and more.
> >                                 http://p.sf.net/sfu/oracle-sfdev2dev
> >
> _______________________________________________
> >                                 gstreamer-devel mailing list
> >                                 gstreamer-devel at lists.sourceforge.net
> >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> >
> >
> >                         --
> >                         Regards,
> >
> >                         Sudarshan Bisht
> >
> >
> >
> ------------------------------------------------------------------------------
> >                         Oracle to DB2 Conversion Guide: Learn learn
> >                         about native support for PL/SQL,
> >                         new data types, scalar functions, improved
> >                         concurrency, built-in packages,
> >                         OCI, SQL*Plus, data movement tools, best
> >                         practices and more.
> >                         http://p.sf.net/sfu/oracle-sfdev2dev
> >                         _______________________________________________
> >                         gstreamer-devel mailing list
> >                         gstreamer-devel at lists.sourceforge.net
> >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> >                 Oracle to DB2 Conversion Guide: Learn learn about
> >                 native support for PL/SQL,
> >                 new data types, scalar functions, improved
> >                 concurrency, built-in packages,
> >                 OCI, SQL*Plus, data movement tools, best practices and
> >                 more.
> >                 http://p.sf.net/sfu/oracle-sfdev2dev
> >                 _______________________________________________
> >                 gstreamer-devel mailing list
> >                 gstreamer-devel at lists.sourceforge.net
> >
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> >
> >
> >         --
> >         Regards,
> >
> >         Sudarshan Bisht
> >
> >
> >
> ------------------------------------------------------------------------------
> >         Oracle to DB2 Conversion Guide: Learn learn about native
> >         support for PL/SQL,
> >         new data types, scalar functions, improved concurrency,
> >         built-in packages,
> >         OCI, SQL*Plus, data movement tools, best practices and more.
> >         http://p.sf.net/sfu/oracle-sfdev2dev
> >         _______________________________________________
> >         gstreamer-devel mailing list
> >         gstreamer-devel at lists.sourceforge.net
> >         https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
> >
> >
> >
> >
> ------------------------------------------------------------------------------
> > Oracle to DB2 Conversion Guide: Learn learn about native support for
> PL/SQL,
> > new data types, scalar functions, improved concurrency, built-in
> packages,
> > OCI, SQL*Plus, data movement tools, best practices and more.
> > http://p.sf.net/sfu/oracle-sfdev2dev
> > _______________________________________________ gstreamer-devel mailing
> list gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
> ------------------------------------------------------------------------------
> Oracle to DB2 Conversion Guide: Learn learn about native support for
> PL/SQL,
> new data types, scalar functions, improved concurrency, built-in packages,
> OCI, SQL*Plus, data movement tools, best practices and more.
> http://p.sf.net/sfu/oracle-sfdev2dev
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
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