https://cloud.google.com/livestream/docs/reference/drm#encryptionkey
According to the documentation in the link above, there is no direct way to set up PSSH for PlayReady and Widevine when applying DRM to a stream from the GCP Live Stream API.
The PlayReady PSSH automatically generated by the GCP Live Stream API is missing the License URL (LA_URL) information, which prevents certain players from requesting a license. I don't know why, but it definitely happens when encrypted with 'cbcs'
As you can see in the link, the DRM protocol only has a key_uri field for HLS, and I think a PSSH field should be added to it. Is there any other way to specify the PSSH directly?
