[gst-devel] help: about rtp

Thu Apr 16 04:16:59 CEST 2009

On Wed, Apr 15, 2009 at 11:11 PM, thiagoss <thiagossantos at gmail.com> wrote:

>
>
> On Wed, Apr 15, 2009 at 10:44 PM, shirie <shizibo at gmail.com> wrote:
>
>>
>> sorry, I mispaste the output. Here is the correct:
>> THe pipeline is :
>> gst-launch -v filesrc location=shake.mp4 ! qtdemux name=d \
>> d. ! { queue ! rtpmp4gpay ! udpsink port=5000 }  \
>> d. ! { queue ! rtpmp4vpay ! udpsink port=5002 }
>>
>> and the output is;
>> Setting pipeline to PAUSED ...
>> /pipeline0/queue0.sink: caps = video/mpeg, mpegversion=(int)4,
>> systemstream=(boolean)false,
>>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> /pipeline0/queue0.src: caps = video/mpeg, mpegversion=(int)4,
>> systemstream=(boolean)false,
>>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> /pipeline0/rtpmp4gpay0.src: caps = application/x-rtp, media=(string)video,
>> payload=(int)96, clock-rate=(int)90000,
>> encoding-name=(string)MPEG4-GENERIC,
>> ssrc=(guint)80355967, clock-base=(guint)309711442,
>> seqnum-base=(guint)5287,
>> streamtype=(string)4, profile-level-id=(string)1, mode=(string)generic,
>>
>> config=(string)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> sizelength=(string)13, indexlength=(string)3, indexdeltalength=(string)3
>> /pipeline0/rtpmp4gpay0.sink: caps = video/mpeg, mpegversion=(int)4,
>> systemstream=(boolean)false,
>>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> /pipeline0/udpsink0.sink: caps = application/x-rtp, media=(string)video,
>> payload=(int)96, clock-rate=(int)90000,
>> encoding-name=(string)MPEG4-GENERIC,
>> ssrc=(guint)80355967, clock-base=(guint)309711442,
>> seqnum-base=(guint)5287,
>> streamtype=(string)4, profile-level-id=(string)1, mode=(string)generic,
>>
>> config=(string)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> sizelength=(string)13, indexlength=(string)3, indexdeltalength=(string)3
>> Pipeline is PREROLLING ...
>>
>> There is really only one udpsink. What's problem?
>
>
> Try setting the queue's max size to a greater value.
>
Also, it seems that your second queue (the audio one) doesn't receive any
data. Did you try another file? Maybe one that data is interleaved?

I guess that the first udpsink is waiting to sync with the other one that
never receives data because the video queue has blocked (already is full)
and consequently might block the demuxer. But I might be wrong, I haven't
gone far in gst in clock/sync issues.

>
>>
>>
>>
>> thiagoss wrote:
>> >
>> > On Wed, Apr 15, 2009 at 12:07 AM, Zibo SHI <shizibo at gmail.com> wrote:
>> >
>> >> hi, all. I'm trying the rtp plugin refer to the doc at:
>> >>
>> >>
>> >>
>> http://webcvs.freedesktop.org/gstreamer/gst-plugins-good/gst/rtp/README?revision=1.13&view=markup
>> >>
>> >> Here's my simple pipeline:
>> >> gst-launch -v filesrc location=shake.mp4 ! qtdemux name=d \
>> >> d. ! { queue ! rtpmp4vpay ! udpsink port=5000 } \
>> >> d. ! { queue ! rtpmp4gpay ! udpsink port=5002 }
>> >>
>> >> but after it's run, here is the output:
>> >>
>> >> Setting pipeline to PAUSED ...
>> >> /pipeline0/queue0.sink: caps = video/mpeg, mpegversion=(int)4,
>> >> systemstream=(boolean)false,
>> >>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> >> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> >> /pipeline0/queue0.src: caps = video/mpeg, mpegversion=(int)4,
>> >> systemstream=(boolean)false,
>> >>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> >> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> >> /pipeline0/rtpmp4vpay0.src: caps = application/x-rtp,
>> >> media=(string)video,
>> >> payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES,
>> >> ssrc=(guint)3831296950, clock-base=(guint)4106776350,
>> >> seqnum-base=(guint)53267, profile-level-id=(string)1,
>> >>
>> config=(string)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34
>> >> /pipeline0/rtpmp4vpay0.sink: caps = video/mpeg, mpegversion=(int)4,
>> >> systemstream=(boolean)false,
>> >>
>> codec_data=(buffer)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34,
>> >> width=(int)320, height=(int)240, framerate=(fraction)15/1
>> >> /pipeline0/queue1.sink: caps = audio/mpeg, mpegversion=(int)4,
>> >> framed=(boolean)true, codec_data=(buffer)1290, rate=(int)32000,
>> >> channels=(int)2
>> >> /pipeline0/queue1.src: caps = audio/mpeg, mpegversion=(int)4,
>> >> framed=(boolean)true, codec_data=(buffer)1290, rate=(int)32000,
>> >> channels=(int)2
>> >> /pipeline0/rtpmp4gpay0.src: caps = application/x-rtp,
>> >> media=(string)audio,
>> >> payload=(int)96, clock-rate=(int)32000,
>> >> encoding-name=(string)MPEG4-GENERIC,
>> >> ssrc=(guint)3458294825, clock-base=(guint)2594580451,
>> >> seqnum-base=(guint)42905, encoding-params=(string)2,
>> >> streamtype=(string)5,
>> >> profile-level-id=(string)2, mode=(string)AAC-hbr, config=(string)1290,
>> >> sizelength=(string)13, indexlength=(string)3,
>> indexdeltalength=(string)3
>> >> /pipeline0/rtpmp4gpay0.sink: caps = audio/mpeg, mpegversion=(int)4,
>> >> framed=(boolean)true, codec_data=(buffer)1290, rate=(int)32000,
>> >> channels=(int)2
>> >
>> >
>> >
>> > here
>> >
>> >>
>> >> /pipeline0/udpsink1.sink: caps = application/x-rtp,
>> media=(string)audio,
>> >> payload=(int)96, clock-rate=(int)32000,
>> >> encoding-name=(string)MPEG4-GENERIC,
>> >> ssrc=(guint)3458294825, clock-base=(guint)2594580451,
>> >> seqnum-base=(guint)42905, encoding-params=(string)2,
>> >> streamtype=(string)5,
>> >> profile-level-id=(string)2, mode=(string)AAC-hbr, config=(string)1290,
>> >> sizelength=(string)13, indexlength=(string)3,
>> indexdeltalength=(string)3
>> >
>> >
>> >
>> > and here
>> >
>> >>
>> >> /pipeline0/udpsink0.sink: caps = application/x-rtp,
>> media=(string)video,
>> >> payload=(int)96, clock-rate=(int)90000, encoding-name=(string)MP4V-ES,
>> >> ssrc=(guint)3831296950, clock-base=(guint)4106776350,
>> >> seqnum-base=(guint)53267, profile-level-id=(string)1,
>> >>
>> config=(string)000001b001000001b58913000001000000012000c48d88007d0a041e1463000001b24c61766335312e34302e34
>> >
>> >
>> >
>> >>
>> >> Pipeline is PREROLLING ...
>> >> Pipeline is PREROLLED ...
>> >> Setting pipeline to PLAYING ...
>> >> New clock: GstSystemClock
>> >>
>> >> According to the doc, there should be udpsink0 and udpsink1, but I only
>> >> have one udpsink in the output.
>> >> Is there anything wrong  with my pipeline? I'm fairly new with
>> gstreamer.
>> >> Can anyone hlep me? Thanks very much.
>> >>
>> >
>> > Look again, there they are!
>> >
>> >
>> >>
>> >>
>> >>
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>> >>
>> >
>> >
>> > --
>> > Thiago Sousa Santos
>> >
>> > Embedded Systems and Pervasive Computing Lab (Embedded)
>> > Center of Electrical Engineering and Informatics (CEEI)
>> > Federal University of Campina Grande (UFCG)
>> >
>> >
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>> --
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>>
>>
>>
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>
>
>
> --
> Thiago Sousa Santos
>
> Embedded Systems and Pervasive Computing Lab (Embedded)
> Center of Electrical Engineering and Informatics (CEEI)
> Federal University of Campina Grande (UFCG)
>

-- 
Thiago Sousa Santos

Embedded Systems and Pervasive Computing Lab (Embedded)
Center of Electrical Engineering and Informatics (CEEI)
Federal University of Campina Grande (UFCG)
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