When working with Dash Video to generate the manifest.mpd file to play a video based on the bandwidth of the network like YouTube or Netflix videos play. There might be an error when Dashfying the videos files. - If you decide to use the code from ffmpeg.org/ffmepg-formats.html#dash-2 then the code will look like below:   ffmpeg -re -i <input> -map 0 -map 0 -c:a libfdk_aac -c:v libx264 -b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline -profile:v:0 main -bf 1 -keyint_min 120 -g 120 -sc_threshold 0 -b_strategy 0 -ar:a:1 22050 -use_timeline 1 -use_template 1 -window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a" -f dash /path/to/out.mpd [Reference] the code above is from ffmpeg.org/ffmepg-formats.html#dash-2   Solution: Just remove the leading "" from the command, Powershell is terminating the command when it reaches a slash. FFmpeg needs to know the whole command to work.