/// Void MPEG-TS video file.
///
/// Other attributes: resolution = 4x4, color = black
/*
.m3u8 = application/x-mpegURL
.ts = video/MP2T
ffmpeg -y -f lavfi -i nullsrc=size=1x1:rate=1:duration=8000,lutrgb=0:0:0 -hls_time 8000 d1r1.m3u8
https://en.wikipedia.org/wiki/MPEG_transport_stream
*/