Improved Profiles (400+ Export Profiles, New Profile UI, and more)

[jonoomph]

This is a big PR, with a new approach to managing Export Profiles. Since most of OpenShot's profiles were inherited from our old 1.x code base, and not personally sourced by myself, I thought it would be a fun exercise to research common video sizes and frame rates, and compile a comprehensive list of useful ones. And since this type of work can be easy to make mistakes, I based all my work around the concept of a simple manage.py script, which could read in simple JSON definitions, and output a variety of things, including verifying my math, and verifying we have no duplicates, etc...

New Profile UI:

Instead of a long dropdown which is difficult to search (especially with 400+ profiles), we now have a filterable / searchable UI for selecting a new Project Profile. These profiles affect the video size (width, height), frame rate, display aspect ratio, sample aspect ratio (i.e. anamorphic), and include some common phrases often associated with it, for example 1920x1080 is FHD, etc... You can simply double click on the profile you want, or click the "Okay" button after making a selection.

New Export UI:

Similarly, when exporting your project, you can click the small "Profile" icon next to the drop down, and it will display the same Profile UI displayed above, which is filterable and searchable.

Backwards Compatibility:
We continue to support our Legacy profiles (now found in src/profiles/legacy/), however OpenShot will now automatically switch you to a new matching profile when you open existing projects. These are basically identical matches (perhaps with a modified name), so it should not cause any issues, but I wanted to mention it here.

Profile manage.py script:

 - "generate": Generate a new set of profile files for OpenShot (1 text file per profile)
 - "validate": Parse through all definitions and validate the math (aspect ratios, sample ratios, etc...)
 - "update": Update all JSON definition sample ratios
 - "preview": Using only JSON definitions, display all profiles to the screen
 - "display": Print all existing profiles to the screen
 - "doc": Print documentation markdown (used for manually updating our docs)

The JSON definition files following the following syntax:

{
    "name": "National Television System Committee",
    "abbreviation": "NTSC",
    "description": "American standard for analog television broadcast",
    "category": "broadcast",
    "profiles": [
        { "width": 704, "height": 480, "notes": "NTSC SD", "fps": [
                {"num": 30000, "den": 1001, "progressive": false, "dar": {"num": 4, "den": 3}, "notes": "Anamorphic", "sar": {"num": 10, "den": 11}},
                {"num": 30000, "den": 1001, "progressive": false, "dar": {"num": 16, "den": 9}, "notes": "Anamorphic", "sar": {"num": 40, "den": 33}}
            ]
        },
        { "width": 320, "height": 240, "notes": "NTSC SD 1/4", "fps": [
                {"num": 30000, "den": 1001, "progressive": true, "dar": {"num": 4, "den": 3}, "notes": "", "sar": {"num": 1, "den": 1}}
            ]
        }
    ]
}

The manage.py "generate" command will parse all these JSON definitions, validate them, de-dupe them, try and normalize the text description formatting and capitalization, and will output hundreds of unique profile files (same format as before, and the format we load at runtime - compatible with previous versions of OpenShot):

Example profile generated: 01920x1080p2398_16:09

description=FHD 1080p 23.98 fps
frame_rate_num=24000
frame_rate_den=1001
width=1920
height=1080
progressive=1
sample_aspect_num=1
sample_aspect_den=1
display_aspect_num=16
display_aspect_den=9

[jonoomph]

New Profile UI + New/Missing Profiles

[jonoomph]

New Profile UI + New/Missing Profiles