Generate MPEG-DASH File from TS File

Example

`ffmpeg -i TS.ts -c copy -f dash -min_seg_duration 200000 -single_file 0 -init_seg_name initavatar-stream\$RepresentationID\$.m4s -media_seg_name chunkavatar-stream\$RepresentationID\$-\$Number%05d\$.m4s -use_template 0 -bsf:a aac_adtstoasc ./demo.mpd`