Enable/Disable Audio In Real Time

Nicolas Castillejos djos06 at gmail.com
Fri May 10 14:01:08 UTC 2019

Hello Everyone,

I would like to be able to enable/disable the video part of a pipeline in
real time, in a playbin player. 
The main goal is to play the audio only without decoding the video (to gain
What I am trying to do is to mix 2 videos together, but mixing only audio
with a crossfade.
So I have Video 1 that arrived at 5 seconds before its end, for example,
Then from this point, I start Audio Only of the Video 2 (without displaying
and decoding video).
When Video 1 is terminated, I enable video part of the Video 2. 
I don't want to decode 2 videos in the same time because i'm on a raspberry.
I don't think it can decode 2 videos at the same time without lagging.
Do you know a way to do this ?

Thank you

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