I'm trying to play tiled videos with mp4box.

Tiling low-definition images and high-definition videos with kvazaar, packaging them with mp4box, and then generating mpd and playing them live.

However, it takes too long for low-definition video to change to high-definition.
When I move the point of view, I want to change to high-definition tiles quickly.
So I tried to adjust the maximum buffer length to 4000ms using the mbuffer option, but the error "ARG mbuffer: 4000 set but not used" appears.
(used code: `mp4box -dash 2000 -rap --mbuffer 4000 -profile live -out mbuffer/dash_file.mpd lowvideo.mp4 highvideo.mp4`

This error also occurs when trying to utilize other options, and the option does not apply. 
How do I fix this?
I'm running this on Windows.

Also, I was wondering what options are there to help low-definition tiles quickly change to high-definition.
mp4box option error
This is a GitHub Issue
repo:gpac
owner:gpac
Title : mp4box option error
Issue date:

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I'm trying to play tiled videos with mp4box.

Tiling low-definition images and high-definition videos with kvazaar, packaging them with mp4box, and then generating mpd and playing them live.

However, it takes too long for low-definition video to change to high-definition.
When I move the point of view, I want to change to high-definition tiles quickly.
So I tried to adjust the maximum buffer length to 4000ms using the mbuffer option, but the error "ARG mbuffer: 4000 set but not used" appears.
(used code: `mp4box -dash 2000 -rap --mbuffer 4000 -profile live -out mbuffer/dash_file.mpd lowvideo.mp4 highvideo.mp4`

This error also occurs when trying to utilize other options, and the option does not apply. 
How do I fix this?
I'm running this on Windows.

Also, I was wondering what options are there to help low-definition tiles quickly change to high-definition.
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