There is no way I can encrypt an audio track and get it working, I am creating an .mp4 file with only an audio track on it, no video track, and 

Audio file:
https://github.com/gpac/gpac/assets/19694461/d44305ad-16cc-4974-a055-09479bb6e0bc

DRM Spec file
```
<?xml version="1.0" encoding="UTF-8"?>
<GPACDRM type="cenc">
  <DRMInfo type="pssh" version="0">
    <BS ID128="edef8ba979d64acea3c827dcd51d21ed"/>
    <BS data="0x08011210"/>
    <BS ID128="65ef3cf7c0194e39591b237300000000"/>
  </DRMInfo>
  <DRMInfo type="pssh" version="1">
    <BS ID128="1077efecc0b24d02ace33c1e52e2fb4b"/>
    <BS bits="32" value="1"/>
    <BS ID128="65ef3cf7c0194e39591b237300000000"/>
  </DRMInfo>
  <CrypTrack trackID="0" IsEncrypted="1" IV_size="16" first_IV="0x908e9dff71c68aa391501d11e0c1afca" saiSavedBox="senc">
    <key KID="0x65ef3cf7c0194e39591b237300000000" value="0xe87fb1c0a57028ef89138b42b8eb94fd"/>
  </CrypTrack>
</GPACDRM>
```

It creates an output, but it cannot be played.
I tried creating only an audio output with that file, and it is not working, obviously video+audio happens the same, only video only works for me.
Any clue? 
Cannot encrypt any video track with audio track, or audio track alone, playback never works.
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Cannot encrypt any video track with audio track, or audio track alone, playback never works.
Issue date:

--- start body ---
There is no way I can encrypt an audio track and get it working, I am creating an .mp4 file with only an audio track on it, no video track, and 

Audio file:
https://github.com/gpac/gpac/assets/19694461/d44305ad-16cc-4974-a055-09479bb6e0bc

DRM Spec file
```
<?xml version="1.0" encoding="UTF-8"?>
<GPACDRM type="cenc">
  <DRMInfo type="pssh" version="0">
    <BS ID128="edef8ba979d64acea3c827dcd51d21ed"/>
    <BS data="0x08011210"/>
    <BS ID128="65ef3cf7c0194e39591b237300000000"/>
  </DRMInfo>
  <DRMInfo type="pssh" version="1">
    <BS ID128="1077efecc0b24d02ace33c1e52e2fb4b"/>
    <BS bits="32" value="1"/>
    <BS ID128="65ef3cf7c0194e39591b237300000000"/>
  </DRMInfo>
  <CrypTrack trackID="0" IsEncrypted="1" IV_size="16" first_IV="0x908e9dff71c68aa391501d11e0c1afca" saiSavedBox="senc">
    <key KID="0x65ef3cf7c0194e39591b237300000000" value="0xe87fb1c0a57028ef89138b42b8eb94fd"/>
  </CrypTrack>
</GPACDRM>
```

It creates an output, but it cannot be played.
I tried creating only an audio output with that file, and it is not working, obviously video+audio happens the same, only video only works for me.
Any clue? 
--- end body ---
