I suggest to cover things like playing back some flash-based videos and
basically things that suggest the usage of non-free software with
alternative, free software means.
For example I have a rather complicated setup, that covers almost all uses of
flash on the Internet more or less automatically. I have FlashVideoReplacer
installed, which is set to prefer WebM videos. This way, if a youtube video
is loaded, it will play with the HTML5 player and only if there is no
possibility of playing it like that, the FVR will load. At the same time I
have gnash enabled, so if both things fail to play back the video, gnash will
try to do it. If gnash fails to playback, I have UnPlug installed, which can
separate the videofile from the complicated link inside the player and play
the file back in a separate tab or window.
My setup is very easy to use and handles most things automatically. But it is
sort of non-trivial to setup and certainly non-trivial to figure out, if you
are used to just installing Adobe Flash and being able to playback
everything.
That's the sort of thing that should be covered on the channel I believe. It
should not be our concern to document Trisquel extensively, because Ubuntu
documentation already exists. We should just cover certain situations, that
arise when trying to use only free software packages.
Another topic for a video: "what to do when being asked to use proprietary
formats?" We all know how often it happens, that you are more or less forced
to use proprietary formats. "Take a look at this PhotoShop image I made", or
stuff like "all students are required to read this text until next week" as a
comment to a .docx file in an email.
One can point out how far the compatibility of proprietary software and free
alternatives goes, what is doable and what not, etc. It is interesting to
know, what LibreOffice cannot save properly in .doc format and what will look
exactly the same in Word. It is important for communication with teachers at
school or professors at the university.