Canon EOS 6D Instruction Manual page 226

3 Shooting Video Snapshots
Shooting duration
226
Select [Album settings].
3
Select [Album settings], then press
<0>.
If you want to continue shooting for
an existing album, go to "Adding to
Existing Album" (p.229).
Select [Create a new album].
4
Select [Create a new album], then
press <0>.
Select the snapshot length.
5
Press <0>, press the <V> key to
select the snapshot's length, then
press <0>.
Select [OK].
6
Select [OK], then press <0>.
Press the <M> button to exit the
menu and return to the movie
shooting screen. A blue bar will
appear to indicate the snapshot
length.
Go to "Creating a Video Snapshot
Album" (p.227).