h264parse: support Precision Time Stamp in SEI messages
Add support for parsing Precision Time Stamp (ST 0604) in SEI Unregistered User Data and attaching them as a new video meta.
Fixes #927 (closed)
Add support for parsing Precision Time Stamp (ST 0604) in SEI Unregistered User Data and attaching them as a new video meta.
Fixes #927 (closed)