The manifest misses (at least) ```xmlns:cenc="urn:mpeg:cenc:2013"``` because dasher_update_mpd() is never called after use_cenc is set.

Command-line used:
```
gpac -i clear/stream.mpd:forward=mani cecrypt:cfile=DRM.xml @ -o cenc/stream.mpd:pssh=mv
```

In my case all is fine but I'm unsure about xlink processing as well.

What do you think?
dashin forward mode with encryption leads to invalid manifest
This is a GitHub Issue
repo:gpac
owner:gpac
Title : dashin forward mode with encryption leads to invalid manifest
Issue date:

--- start body ---
The manifest misses (at least) ```xmlns:cenc="urn:mpeg:cenc:2013"``` because dasher_update_mpd() is never called after use_cenc is set.

Command-line used:
```
gpac -i clear/stream.mpd:forward=mani cecrypt:cfile=DRM.xml @ -o cenc/stream.mpd:pssh=mv
```

In my case all is fine but I'm unsure about xlink processing as well.

What do you think?
--- end body ---
