IVF parser can detect the vp9 streams, but it only extracts the IVF header for notifying the resolution. This won't work for dynamic resolution change, especially vp9 supports to have inter prediction from varying resolution frames.

For VP8, the ivfparser has uncompressed header parsing and it announces any possible resolution change.

Adding support for VP9 FrameHeader parsing in ivfparse is more complicated than vp8.

The easy option could be to add a dependency to the codecparser library so that we can use vp9 codecparsing apis directly.

The second option is to add a dependency to the bitreader api from GStreamer and implement the parsing support in ivfparse.

I would like to know what everybody thinks about this.