/// Adds a new stream.
pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
let stream_num = self.streams.len();
/// Adds a new stream.
pub fn add_stream(&mut self, stream: NAStream) -> Option<usize> {
let stream_num = self.streams.len();
let mut dmx = dmxcr.new_demuxer(br);
let mut str = StreamManager::new();
let mut seek_idx = SeekIndex::new();
let mut dmx = dmxcr.new_demuxer(br);
let mut str = StreamManager::new();
let mut seek_idx = SeekIndex::new();