LayoutTests/media/media-source/content/test-bframes-hevc-manifest.json

{
    "url": "content/test-bframes-hevc.mp4",
    "type": "video/mp4; codecs=\"hev1.1.6.L93.B0\"",
    "init": { "offset": 0, "size": 1065 },
    "duration": 236.0,
    "media": [
        { "offset": 1065, "size": 514474, "timestamp": 230.0, "duration": 6.0 }
    ]
}