Transcoding to multiple image size
Bruce Tsai
wagamama.tsai at gmail.com
Sat Apr 22 04:33:27 UTC 2017
This situation is weird to me.
I suppose A/V timestamp is fixed in “mpegtsmux” so “filesink” or “udpsink” shall output same result.
Maybe “rtpmp2tpay” changes the timestamp information?
--
Yi-Lung (Bruce) Tsai
wagamama.tsai at gmail.com
> On Apr 21, 2017, at 8:16 PM, Dmitriy Novash <programer at wnet.ua> wrote:
>
> Recorded video to disk is perfect, but real time output to udp have A/V sync problem.
>
> 21.04.2017 10:35, Bruce Tsai пишет:
>> I made a mistake when connecting “mpegtsmux” to “rtpmp2tpay”.
>>
>> Here is modified version:
>>
>> gat-launch-1.0 uridecodebin name=dec uri=udp://239.50.50.50:1234 <udp://239.50.50.50:1234> \
>> dec. ! videoconvert ! deinterlace ! videoscale method=0 ! tee name=vt \
>> dec. ! audioconvert ! audioresample ! audio/x-raw,rate=48000,channels=1 ! audiorate ! queue ! voaacenc bitrate=32000 ! tee name=at \
>> vt. ! queue ! videorate ! video/x-raw,width=640,height=512,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer alignment=7 ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1111 \
>> at. ! queue ! aacparse ! muxer. \
>> vt. ! queue ! videorate ! video/x-raw,width=320,height=256,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer1 alignment=7 ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1112 \
>> at. ! queue ! aacparse ! muxer1. \
>> vt. ! queue ! videorate ! video/x-raw,width=160,height=128,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer2 alignment=7 ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1113 \
>> at. ! queue ! aacparse ! muxer2.
>>
>> --
>> Yi-Lung (Bruce) Tsai
>> wagamama.tsai at gmail.com <mailto:wagamama.tsai at gmail.com>
>>
>>
>>
>>
>>
>>> On Apr 21, 2017, at 2:32 PM, Dmitriy Novash <programer at wnet.ua <mailto:programer at wnet.ua>> wrote:
>>>
>>> Hi, Bruce.
>>>
>>> Problem with combine video and audio.
>>> $ GST_DEBUG=1 gst-launch-1.0 uridecodebin name=dec uri=udp://239.50.50.50:1234 <udp://239.50.50.50:1234> dec. ! videoconvert ! deinterlace ! tee name=vt dec. ! audioconvert ! audioresample ! audio/x-raw,rate=48000,channels=1 ! audiorate ! queue ! voaacenc bitrate=32000 ! tee name=at vt. ! videoscale method=0 ! videorate ! video/x-raw,width=640,height=512,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer alignment=7 at. ! queue ! aacparse ! muxer. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1111
>>> 0:00:00.015467297 3955 0x1f2a980 ERROR GST_PIPELINE grammar.y:959:priv_gst_parse_yyparse: syntax error
>>> 0:00:00.015490467 3955 0x1f2a980 ERROR GST_PIPELINE grammar.y:959:priv_gst_parse_yyparse: syntax error
>>>
>>> Simplify code:
>>> $ GST_DEBUG=1 gst-launch-1.0 uridecodebin name=dec uri=udp://239.50.50.50:1234 <udp://239.50.50.50:1234> dec. ! videoconvert ! deinterlace ! tee name=vt dec. ! audioconvert ! audioresample ! audio/x-raw,rate=48000,channels=1 ! audiorate ! queue ! voaacenc bitrate=32000 ! tee name=at vt. ! videoscale method=0 ! videorate ! video/x-raw,width=640,height=512,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer alignment=7 at. ! fakesink
>>> Установка конвейера в состояние PAUSED…
>>> Конвейер работает и не требует состояния PREROLL…
>>> Установка конвейера в состояние PLAYING…
>>> New clock: GstSystemClock
>>>
>>> 20.04.2017 18:58, Bruce Tsai пишет:
>>>> First, there is no need to mix-use “decodebin” and “tsdemux”.
>>>> “decodebin” already has demux capability.
>>>> Second, there are too many “queue” in pipeline.
>>>> Each “queue” introduces a new thread.
>>>> Too many unnecessary threads is not a good idea.
>>>> Third, “tee” for audio stream is also necessary.
>>>> Each “mux” needs a copy of video and a copy of audio.
>>>> Use “tee” to get three copies of video and audio respectively.
>>>> Then combine each pair of video and audio to a “mpegtsmux”.
>>>>
>>>> I tried to rewrite your pipeline as follows:
>>>>
>>>> gat-launch-1.0 uridecodebin name=dec uri=udp://239.50.50.50:1234 <udp://239.50.50.50:1234> \
>>>> dec. ! videoconvert ! deinterlace ! videoscale method=0 ! tee name=vt \
>>>> dec. ! audioconvert ! audioresample ! audio/x-raw,rate=48000,channels=1 ! audiorate ! queue ! voaacenc bitrate=32000 ! tee name=at \
>>>> vt. ! queue ! videorate ! video/x-raw,width=640,height=512,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer alignment=7 \
>>>> at. ! queue ! aacparse ! muxer. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1111 \
>>>> vt. ! queue ! videorate ! video/x-raw,width=320,height=256,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer1 alignment=7 \
>>>> at. ! queue ! aacparse ! muxer1. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1112 \
>>>> vt. ! queue ! videorate ! video/x-raw,width=160,height=128,framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer2 alignment=7 \
>>>> at. ! queue ! aacparse ! muxer2. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1113
>>>>
>>>> I didn’t verify above pipeline on my machine.
>>>> You could try it with first pair of output only.
>>>> Simplicity is good for debug.
>>>> Then you could add second pair and then third pair.
>>>>
>>>>
>>>> --
>>>> Yi-Lung (Bruce) Tsai
>>>> wagamama.tsai at gmail.com <mailto:wagamama.tsai at gmail.com>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> On Apr 20, 2017, at 9:49 PM, Dmitriy Novash <programer at wnet.ua <mailto:programer at wnet.ua>> wrote:
>>>>>
>>>>> Hi all.
>>>>>
>>>>> I have many TV streams (Mpeg2) in udp multicast.
>>>>> I want to have stream in H264+AAC in udp multicast with 3 resolutions: 1:1 (original),1:2,1:4. Now I do it with 3 processes of gst-launch, but for optimization of CPU usage I think I can do it in one process.
>>>>> After several tries I get 3 videos with 3 resolutions, but i can't get audio for all threads, only for one.
>>>>> I'm using gstreamer 1.00+ version:
>>>>> $ gst-launch-1.0 --version
>>>>> gst-launch-1.0 version 1.8.3
>>>>> GStreamer 1.8.3
>>>>>
>>>>> My configuration:
>>>>> gst-launch-1.0 udpsrc uri=udp://239.50.50.50:1234 ! queue ! tsparse ! queue ! tsdemux name=demux \
>>>>> demux. ! queue ! mpegvideoparse ! queue ! decodebin ! queue ! deinterlace ! \
>>>>> tee name=tee1 ! queue ! videoscale method=0 ! videorate ! video/x-raw, width=640, height=512, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer alignment=7 \
>>>>> demux. ! queue ! decodebin ! queue ! audioconvert ! audioresample ! queue ! audio/x-raw, rate=48000, channels=1 ! audiorate ! voaacenc bitrate=32000 ! queue ! aacparse ! queue ! tee name=tee2 ! queue ! muxer. \
>>>>> muxer. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1111 \
>>>>> tee1. ! queue ! videoscale method=0 ! videorate ! video/x-raw, width=320, height=256, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer1 alignment=7 muxer1. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1112 \
>>>>> tee1. ! queue ! videoscale method=0 ! videorate ! video/x-raw, width=160, height=128, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux name=muxer2 alignment=7 muxer2. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1113
>>>>>
>>>>> I can't join mpedtsmux and tee.
>>>>>
>>>>> So I want to decode video, get 3 copies, each copy scale to some resolution, encode, decode + encode audio and join to each copy of video, output each copy in udp unicast to some port.
>>>>>
>>>>> Help, maybe someone have working solution for my task.
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>>
>>> --
>>> BR, Dmitriy Novash
>>> Wnet IPTV/Media team
>>> tel: +380(44) 5-900-800 (доп. 1132)
>>> http://wnet.ua <http://wnet.ua/>_______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>
>>
>>
>> _______________________________________________
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>
> --
> BR, Dmitriy Novash
> Wnet IPTV/Media team
> tel: +380(44) 5-900-800 (доп. 1132)
> http://wnet.ua <http://wnet.ua/>_______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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