I am trying to do tiling using this command.

MP4Box -dash 1000 [other dash params]  source.mp4:desc_as=<SupplementalProperty schemeIdUri=\"urn:mpeg:dash:srd:2014\" value=\"0,0,1,1,1,2,2\"/>

but this is showing a syntax error every time I implement this. Different other params were also tried but every time the same issue persist. I have also attached my version of the GPAC.  version 2.0. if some help can be provided that would be really appreciated.

<img width="671" alt="image" src="https://user-images.githubusercontent.com/74789273/161098498-4e1dc736-4636-4989-b7ae-80254fb9ba62.png">

<img width="415" alt="image" src="https://user-images.githubusercontent.com/74789273/161098858-5bef2f05-aa5f-4542-9434-6284f0608fa3.png">

Syntax not valid issue.
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Syntax not valid issue.
Issue date:

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I am trying to do tiling using this command.

MP4Box -dash 1000 [other dash params]  source.mp4:desc_as=<SupplementalProperty schemeIdUri=\"urn:mpeg:dash:srd:2014\" value=\"0,0,1,1,1,2,2\"/>

but this is showing a syntax error every time I implement this. Different other params were also tried but every time the same issue persist. I have also attached my version of the GPAC.  version 2.0. if some help can be provided that would be really appreciated.

<img width="671" alt="image" src="https://user-images.githubusercontent.com/74789273/161098498-4e1dc736-4636-4989-b7ae-80254fb9ba62.png">

<img width="415" alt="image" src="https://user-images.githubusercontent.com/74789273/161098858-5bef2f05-aa5f-4542-9434-6284f0608fa3.png">

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