Video Compressed Meta Data - sccn/xdf GitHub Wiki
If a stream has the content-type VideoCompressed, we recommend that meta-data about the stream adheres to the structure and naming laid out in the following. While most meta-data is optional, at least the field encoding/codec must be present.
<encoding> # specification of how each sample (frame) is encoded
<codec> # must be present; this is typically the FourCC code of the codec used
</encoding>
# All remaining fields (encoding, display, content, ...): same as in VideoRaw.