We are trying to specify a time server for a dasher filter using the `utcs` parameter, like this: `[opts]::utcs="xsd@https://time.akamai.com/?iso&ms"`, but that last `&ms` part of the uri causes the manifest to not include the AdaptationSet for the video track:

![image (1)](https://user-images.githubusercontent.com/125606672/219486725-7bfd7dbc-59cb-4b73-b20a-193cd87ac85e.png)

The full command is this:
`gpac -i [some_rtmp_input] -o [some_playlist.mpd]:gpac:dual:segdur=2.0:buf=-100:hlsc=1:cmaf=cmfc:profile=live:dmode=dynamic:template=segment_$$(openssl rand -hex 5):hmode=push:rdirs=gmem::utcs="xsd@https://time.akamai.com/?iso&ms"`

We see that it works if we just use `[opts]::utcs=xsd@https://time.akamai.com/?iso`, but shouldn't it work with the `&ms` part?

Dasher Time Server Uri with Params
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Dasher Time Server Uri with Params
Issue date:

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We are trying to specify a time server for a dasher filter using the `utcs` parameter, like this: `[opts]::utcs="xsd@https://time.akamai.com/?iso&ms"`, but that last `&ms` part of the uri causes the manifest to not include the AdaptationSet for the video track:

![image (1)](https://user-images.githubusercontent.com/125606672/219486725-7bfd7dbc-59cb-4b73-b20a-193cd87ac85e.png)

The full command is this:
`gpac -i [some_rtmp_input] -o [some_playlist.mpd]:gpac:dual:segdur=2.0:buf=-100:hlsc=1:cmaf=cmfc:profile=live:dmode=dynamic:template=segment_$$(openssl rand -hex 5):hmode=push:rdirs=gmem::utcs="xsd@https://time.akamai.com/?iso&ms"`

We see that it works if we just use `[opts]::utcs=xsd@https://time.akamai.com/?iso`, but shouldn't it work with the `&ms` part?

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