conditional expression in gst-launch possible?

[Marianna Smidth Buschle]

No, you need to write an app, and build the pipeline dynamically.

You can listen to the pad-added signal.

See 
https://gstreamer-devel.narkive.com/ScjKDkqR/no-such-pad-video-04x-in-element-tsdemux

On 14.10.2021 06.38, gstreamer-devel-request at lists.freedesktop.org wrote:
> t. ! queue ! tsdemux name=demux \
>          demux.audio_0_0101 ! aacparse ! queue ! hlssink.audio \
>          demux.video_0_0100 ! h264parse ! queue ! hlssink.video \
>          hlssink2 name=hlssink playlist-location=
>
> Is it possible to have some sort of conditional expression so that audio is only parsed when it exists? Of course that would also maybe require some sort of auto detection on the audio parsing.

-- 
Best regards / Med venlig hilsen
“Marianna Smidth Buschle”