}
let is_keyframe = self.keyframe && (!self.audio || first);
bw.write_u16be(0)?; //version;
bw.write_u16be((data.len() + 12) as u16)?;
bw.write_u16be(self.stream_id)?;
}
let is_keyframe = self.keyframe && (!self.audio || first);
bw.write_u16be(0)?; //version;
bw.write_u16be((data.len() + 12) as u16)?;
bw.write_u16be(self.stream_id)?;