if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
let w = vinfo.get_width();
let h = vinfo.get_height();
if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
let w = vinfo.get_width();
let h = vinfo.get_height();
let src = pkt.get_buffer();
let mut mr = MemoryReader::new_read(&src);
let mut br = ByteReader::new(&mut mr);
let src = pkt.get_buffer();
let mut mr = MemoryReader::new_read(&src);
let mut br = ByteReader::new(&mut mr);