Merge commit '0b6e5d6b'

This commit is a no-op.

[16:15] <@Daemon404> wm4, ping
[16:15] <@Daemon404> whats up with "avconv: remove sub-frame warning"
[16:15] <@Daemon404> it's in libav but not ours?
[16:15] <@Daemon404> mailing list bikeshedding?
[16:15] <@wm4> it's in ffmpeg.c too
[16:16] <@wm4> you can probably skip it for now
[16:16] <@wm4> michaelni was against removing it this way
[16:17] <@Daemon404> ok

* commit '0b6e5d6b':
  avconv: remove sub-frame warning

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>