Mix two audio inputs and one video input to filesink

[pradeep.linux]

Hi All,

I am trying to mix two audio inputs(alsasrc) & one video (v4l2src) input to a file. I am getting one audio and one video in the filesink, other audio is missing from filesink. I have tried playing one audio at a time, both audio's are fine.

can you please check below gstreamer command . correct and suggest me how to get both audio's in the filesink?

gst-launch-1.0 -e mp4mux name=muxy ! filesink location=out.mp4 \

-e alsasrc device="plughw:0,2" do-timestamp=true ! 'audio/x-raw,format=S16LE, rate=48000' ! queue max-size-time=10000000000 max-size-bytes=104857600 max-size-buffers=2000 ! lamemp3enc ! muxy.audio_0 \

-e alsasrc device="plughw:1,0" do-timestamp=true ! 'audio/x-raw,format=S16LE, rate=48000' ! queue max-size-time=10000000000 max-size-bytes=104857600 max-size-buffers=2000 ! lamemp3enc ! muxy.audio_1 \

-e v4l2src device=/dev/video10 !  videoconvert ! video/x-raw,format=NV12,width=1280,height=720 ! v4l2h264enc extra-controls="controls,h264_profile=4,video_bitrate=20000000;" ! h264parse ! queue ! muxy.video_0

Thanks,

Pradeep

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[Geek-Gst]

Below pipeline store audio streams in 2 different tracks(Line Multiple
Language English/Hindi).
In player any one of the track can be played at a time. To change the track
you have to go to Audio setting in player and change the track.

If you are expecting both the alsasrc in same track then use audiomixer.



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[pradeep.linux]

Thanks Vinod.

Both tracks are there but Volume is low for one track. Please suggest how to
increase the volume.

Also I have tried to combine two audio's with audiomixer. Please check below
gstreamer command. Here also low volume for one track and some buzz noise is
there in the background.

gst-launch-1.0 -e *audiomixer* name=mix ! lamemp3enc ! filesink
location=out.mp3 *alsasrc* device="plughw:1,0" name=hello1 !
'audio/x-raw,format=S16LE, rate=48000' ! queue max-size-time=20000000000
max-size-bytes=204857600 max-size-buffers=3000 ! mix. *alsasrc*
device="plughw:0,2" name=hello2 ! 'audio/x-raw,format=S16LE, rate=48000' !
queue  max-size-time=20000000000 max-size-bytes=204857600
max-size-buffers=3000 ! mix.

Thanks,
Pradeep



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[pradeep.linux]

Hi Vinod,

I increased the volume with below element. Now volume is fine for both
tracks. Both audio tracks are combined to single file. i will try to combine
the video to the audio.

*volume volume=10.0 ! level
*
Thanks,
Pradeep



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