Pipeline stuck at prerolling

[lokesh kumar]

Hi,
   I am trying to play a lot of media using shell script, few of them has
audio only.
and my pipeline is something like this

src ! demux ! viddec ! vidsink !audsink


now as few of my media do not have video at all, pipeline gets stuck at
PREROLLING stage, as video decoder expects some data.
I know i can write an gstreamer application which checks whether video is
available or not , and then add viddec dynamically.

but ,is there any other workaround for this issue.

regards,
Lokesh
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