无法使用FFMPEG创建manifest.mpd文件。
它写道：
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #1:0 -> #0:1 (copy)
Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input
生成清单的代码是：
ffmpeg \
-f webm_dash_manifest -live 1 -i video720.hdr \
-f webm_dash_manifest -live 1 -i audio128.hdr \
-map 0 -map 1 -c copy \
-f webm_dash_manifest -y -live 1 -adaptation_sets "id=0,streams=0 id=1,streams=1" \
-chunk_start_index 1 -chunk_duration_ms 2000 -time_shift_buffer_depth 7200 -minimum_update_period 7200 manifest.mpd