Thats a good first effort Paul,
Did you record all of your capture settings, if not I suggest doing so, along with the UTC for each avi. You can download Al Sheens most excellent program "Al's Clock" from the "Resources" section of IIS. This will convert your local time to UTC. While your at it, download "Al's Reticle" from the same location, you can open this over your capture window and place it centrally as an aid to keeping the live image in the middle of the frame.
You can download "Mars Ephemeris Generator 2.0" from the link below.
http://pds-rings.seti.org/tools/ephem2_mar_help.html
By input of your observing date and UTC this program will provide you with the CM on Mars for the time of capture so that you can positively identify the features by relating the CM to a map. This program can also provide heaps of other info such as apparent radius, distance from Earth, distance from the Sun and phase angle.
Regards
Trevor