Merge in a few outstanding minor improvements to webm support
These two changes were both previously submitted via the mailing list. They have been retested and updated and are ready to be committed.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
These two changes were both previously submitted via the mailing list. They have been retested and updated and are ready to be committed.