Meta-script for creating a full set of annotated mezzanine content

[nicholas-fr]

To avoid manually calling mezzanine.py to generate each annotated mezzanine stream, a meta-script should be created to generate a full set of streams.

My understanding is that this currently includes:

• Generating 1min streams for all the following resolutions: 320x180 384x216 480x270 512x288 640x360 704x396 720x404 768x432 852x480 960x540 1024x576 1280x720 1600x900 1920x1080 2560x1440 3200x1800 3840x2160

• Generating 3min30s streams for 1280x720, 1600x900, 1920x1080

Perform this above using Tears of Steel to create 60fps and 60/1.001fps streams. Perform this above using the Croatia EBU footage to create 50fps streams. Each resolution will be labelled starting with 'A' for the lowest resolution, then 'B' and so on.

Such a script has been written and is being tested. I'll create a pull request for it once initial testing has been done.

[haudiobe]

Call 2020/07/27: @nicholas-fr will take care, but only a matter of execution

[nicholas-fr]

This issue was resolved by the creation of metamezz.py in pull request #17