[vlc] taking screenshots of all channels of of a DVB-T multiplex via the command line

[Michael Pujos]

Hi

I'm looking for a way, using the command line to take periodically 
screenshots of all channels of a DVB-T multiplex.
Each screenshot filename must be different for each channel, but must be 
overwritten by newer screenshot.

I guess I could do multiple "vlc -V image --program <pid>", one for each 
channel but wonder if it is possible to build a single instance
of vlc with a complex --sout chain that would do the same job





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