desc!(video; "vp7", "VP7"),
desc!(video; "vp8", "VP8"),
desc!(video; "vp9", "VP9"),
desc!(audio; "adpcm-dk3", "Duck DK3 ADPCM"),
desc!(audio; "adpcm-dk4", "Duck DK4 ADPCM"),
desc!(video; "vp7", "VP7"),
desc!(video; "vp8", "VP8"),
desc!(video; "vp9", "VP9"),
desc!(audio; "adpcm-dk3", "Duck DK3 ADPCM"),
desc!(audio; "adpcm-dk4", "Duck DK4 ADPCM"),