ref: 3acc9f1c414b3032531e1db73e77bb4af0f8ed38
dir: /flv.h/
enum {
Faudio = 8,
Fvideo = 9,
Fscript = 18,
FlKey = 1<<0,
FlHdr = 1<<1,
};
u8int *flvscript(u8int *p, u8int *e, int w, int h, int audio);
u8int *flvdata(u8int *p, u8int *e, u32int pts, u32int dts, void *data, int sz, int type, int fl);