Ultra simple AV info.json

info.json

{
 "@context": "http://iiif.io/api/av/0/context.json",
 "id": "https://iiif-staging02.lib.ncsu.edu/iiifv/pets",
 "profile": "http://iiif.io/api/av/0/level1.json",

 "attribution": "Provided by NCSU",
 "logo": "http://ncsu.edu/logo.png",
 "rights": "http://creativecommons.org/4.0/cc-by/",

 "sizes": [
   {"width": 720, "height": 480, "duration": 35.6, "formats": ["video/mp4", "video/webm"]},
   {"width": 360, "height": 240, "duration": 35.6, "formats": ["video/mp4"]}
 ],
 
 "thumbnail": {
   "id": "https://iiif-staging02.lib.ncsu.edu/iiifv/pets/2/full/full/0/default.jpg",
   "type": "Image",
   "format": "image/jpeg",
   "width": 360,
   "height": 240,
   "service": {
     "@context": "http://iiif.io/api/image/2/context.json",
     "id": "https://iiif-staging02.lib.ncsu.edu/iiifv/pets",
     "profile": "http://iiif.io/api/image/2/level2.json"
   }
 }
}

re: protocol & type -- perhaps one or the other? If we have separate specs for a and v then a .../video/ protocol would say type=video

Is size the only relevant way that versions of a video might differ? So we know that we can get frames for MP4 but that WebM doesn't really work that way. If we want to include frames or attributes other than size that will different across different types of video, sizes seems like it could get messy. For instance even the duration of a video can differ slightly just using ffmpeg while scaling down the height and width of the video with no intention of changing the duration. I've used sources as it maps to the media element source tag. I've included both the format (really file extension) as well as the content type (which could also include codecs).

sources": [
    {
        "width": 720,
        "height": 480,
        "duration": "35.627000",
        "type": "video/webm",
        "format": "webm",
        "size": "3360808"
    },
    {
        "width": 720,
        "height": 480,
        "duration": "35.627000",
        "type": "video/mp4",
        "format": "mp4",
        "size": "2924836",
        "frames": "1067"
    },
    {
        "width": 360,
        "height": 240,
        "duration": "35.648000",
        "type": "video/mp4",
        "format": "mp4",
        "size": "1075972",
        "frames": "1067"
    }
]