Pulseview supports the -I command line option, to specify a different input 
format than the native sigrok archives.  It would be nice if the -I option 
could accept colon separated options for the input module like sigrok-cli does.

Example uses:

  $ pulseview -I vcd:downsample=10 -i file.vcd
  $ pusleview -I raw_analog:numchannels=2:format=U8 -i file.bin

A complication is that the string representation passed to -I needs to get 
split into an aggregate of several parameters of variable types.  Which is 
dependent on the specific input module.  I don't know whether a generic 
string to variant-bundle conversion routine is available in libsigrok and 
whether Pulseview can access it.