Decklink Duo 2 - Second pair SDI audio not detected

[nipk...@gmail.com]

Hello everyone,

Hope someone could help me...

I'm trying to encode an SDI signal with 4 embedded audio channels. First pair is working fine, second pair doesn't work at all. I'm sure that 4 audio channels are available in the SDI stream.

Running Ubuntu, BlackMagic driver 10.11.2

Here's the probe output:

obecli> set input decklink
obecli> set input opts video-format=1080i50
obecli> probe input
Probing device: Decklink card 0. Timeout 20 seconds
...
Detected input streams:
Input-stream-id: 0 - Video: RAW 720x576i 25/1fps
Input-stream-id: 1 - Audio: PCM 16 channels 48kHz

Encoder outputs:
Output-stream-id: 0 - Input-stream-id: 0 - Video: AVC
Output-stream-id: 1 - Input-stream-id: 1 - Audio: RAW - SDI audio pair: 1

Configuration:

screen -d -m -S obe01 ./obecli

sleep 1

screen -p 0 -S obe01 -X stuff $'set input decklink\012'

screen -p 0 -S obe01 -X stuff $'set input opts card-idx=0,video-connection=sdi\012'

screen -p 0 -S obe01 -X stuff $'set input opts video-format=pal\012' #

screen -p 0 -S obe01 -X stuff $'probe input\012'

sleep 2

screen -p 0 -S obe01 -X stuff $'add stream 2:type=audio\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 1:sdi-audio-pair=1\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 2:sdi-audio-pair=2\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 0:threads=4,format=avc,level=3.2,profile=main,aspect-ratio=16:9,filler=1\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 1:format=mp2,lang=dut,mp2-mode=stereo,audio-type=undefined\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 2:format=mp2,lang=dut,mp2-mode=stereo,audio-type=undefined\012'

screen -p 0 -S obe01 -X stuff $'set muxer opts ts-muxrate=7800000,ts-type=dvb,cbr=1,provider-name=xyz,service-name=abc\012'

# PID Settings

screen -p 0 -S obe01 -X stuff $'set stream opts 0:pid=4401\012' # Video

screen -p 0 -S obe01 -X stuff $'set stream opts 1:pid=4402\012' # Audio1

screen -p 0 -S obe01 -X stuff $'set stream opts 2:pid=4403\012' # Audio2

screen -p 0 -S obe01 -X stuff $'set muxer opts ts-id=101,program-num=271,pmt-pid=4400,pcr-pid=4401,pcr-period=36\012' # Transport Stream

[Alexandre LICINIO]

hi,

this is a working config with 4 audio:

#!/bin/bash

screen -d -m -S obe01 obecli

sleep 1

screen -p 0 -S obe01 -X stuff $'set input decklink\012'

screen -p 0 -S obe01 -X stuff $'set input opts video-format=1080i50\012'

screen -p 0 -S obe01 -X stuff $'set input opts card-idx=0\012'

screen -p 0 -S obe01 -X stuff $'probe input\012'

sleep 2

screen -p 0 -S obe01 -X stuff $'add stream 2:type=audio\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 1:sdi-audio-pair=1\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 2:sdi-audio-pair=4\012'

# PID Settings

screen -p 0 -S obe01 -X stuff $'set stream opts 0:pid=512\012' # Video

screen -p 0 -S obe01 -X stuff $'set stream opts 1:pid=4112\012' # Audio1

screen -p 0 -S obe01 -X stuff $'set stream opts 2:pid=4128\012' # Audio2

screen -p 0 -S obe01 -X stuff $'set muxer opts ts-id=1,program-num=1,pmt-pid=256,pcr-pid=512\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 0:vbv-maxrate=4000,vbv-bufsize=4000,bitrate=4000,threads=4,format=avc\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 1:bitrate=128,format=aac\012'

screen -p 0 -S obe01 -X stuff $'set stream opts 2:bitrate=128,format=aac\012'

screen -p 0 -S obe01 -X stuff $'set muxer opts ts-muxrate=61000000,ts-type=generic\012'

screen -p 0 -S obe01 -X stuff $'set outputs 3\012'

screen -p 0 -S obe01 -X stuff $'set output opts 0:type=rtp,target=udp://127.0.0.1:9000?ttl=64\012'

screen -p 0 -S obe01 -X stuff $'set output opts 1:type=udp,target=udp://127.0.0.1:9001?ttl=64\012'

screen -p 0 -S obe01 -X stuff $'set output opts 2:type=rtp,target=udp://127.0.0.1:9012?ttl=64\012'

screen -p 0 -S obe01 -X stuff $'start\012'

cheers

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Alexandre Licinio

Ekla Ingénierie - www.ekla.tv

Open Broadcast Systems Ltd. - www.obe.tv

+33 (0)6 76 10 28 41 / Whatsapp / Telegram

144 Avenue Berthelot - 69007 Lyon - France

[nipk...@gmail.com]

Thanks Alexandre... I will try this one.

Op dinsdag 25 september 2018 11:47:33 UTC+2 schreef nipk...@gmail.com: