if let OutputMode::Encode(dst_id, ref mut encoder, ref mut cvt) = transcoder.encoders[src_id] {
if let Some((_, _, ref mut reorderer)) = transcoder.decoders[src_id] {
while let Some(frm) = reorderer.get_last_frames() {
if let OutputMode::Encode(dst_id, ref mut encoder, ref mut cvt) = transcoder.encoders[src_id] {
if let Some((_, _, ref mut reorderer)) = transcoder.decoders[src_id] {
while let Some(frm) = reorderer.get_last_frames() {