ffmpeg – Save manifest with parameter type=”dynamic”

I tried everything I had

-init_seg_name "init-$RepresentationID$.$ext$"
-media_seg_name "sg-$RepresentationID$-$Number%05d$.$ext$" 
-dash_segment_type webm 
-use_template 1 -use_timeline 1 -seg_duration 9 
-adaptation_sets "id=0, streams=v id=1, streams=a" 
-live 1 
-chunk_start_index 1 
-time_shift_buffer_depth 60 
-f dash {pathfilm}manifest.mpd

When converting a file, in the manifest

type="dynamic"

When video conversion is finished

type="statick"

The question is how to force ffmpeg. When the video conversion is complete, save the manifest with the parameter

type="dynamic"

??