This is meant to be a hint. Streams may not allow seeking even if
this function returns %TRUE. However, if this function returns
%FALSE, streams are guaranteed to not be seekable and user interfaces
may hide controls that allow seeking.
It is allowed to call [method@Gtk.MediaStream.seek] on a non-seekable
stream, though it will not do anything.
Checks if a stream may be seekable.
This is meant to be a hint. Streams may not allow seeking even if this function returns %TRUE. However, if this function returns %FALSE, streams are guaranteed to not be seekable and user interfaces may hide controls that allow seeking.
It is allowed to call [method@Gtk.MediaStream.seek] on a non-seekable stream, though it will not do anything.