matroskademux: seek error handling
Submitted by Tim Müller
There is some code in matroskademux (goto seek_error) which posts an error message on the bus if a seek request can't be fulfiled for some reason, e.g. if there's no index and it tries to scan for the right position, but doesn't find it.
I'm not sure it should post an error, but probably send a segment event and an EOS event?