Remove a file in previous commit/changeset

A few revisions ago I committed a piece of work in which I accid开发者_开发技巧entally included a 300mb .flv file (don't ask...).

Is there a way I can edit that changeset to not include the aforementioned file?

UPDATE: I think I can use the MQ extension and follow these instructions (chapter 6). However, when I run: hg qimport -r 11:tip, I receive the error: abort: out of memory.

Use hg convert with --filemap switch. Do note that IDs will change on modified changesets and their children. If you've already pushed it to a remote location, you need to use strip/convert on that repo as well, before pushing again.