if num_entries == 0 { return Ok(()); }
seek_idx.add_stream(str_id);
let idx = seek_idx.get_stream_index(str_id).unwrap();
for _ in 0..num_entries {
if num_entries == 0 { return Ok(()); }
seek_idx.add_stream(str_id);
let idx = seek_idx.get_stream_index(str_id).unwrap();
for _ in 0..num_entries {