As nice as the ALSJ is, these are not all the videos and I would not be sure about the quality standards.
If you want the "originals", you will have to go and request them at JSC. I do not know how much that costs. I would think to request every film might not be free.
These are at the NASA Johnson Space Center Video Repository.....
APOLLO MISSION DOWNLINK TELEVISION KINESCOPES
Film-to-video transfers of kinescopes filmed from downlink television recorded during Apollo missions 10 through 17.
APOLLO MISSION DOWNLINK TELEVISION (14-17 ONLY)
Television downlink recorded during Apollo missions 14 through 17. Video recordings are masters color converted from 2nd generation field sequential video. The original 2 inch videotapes were recorded by JSC's communications group.
APOLLO MISSION LAUNCH DOCUMENTATION Primary video and film documentation of Apollo mission launches.
APOLLO MISSION ONBOARD FILM TRANSFERS Film-to-video transfers of 16mm film shot during Apollo missions.
APOLLO MISSION SPLASHDOWN AND RECOVERY DOCUMENTATION Primary video and film documentation of Apollo mission splashdown and recovery activities.
These are a mix of HDTV, Digital Betacam and DVD and some format called D2.
APOLLO MISSION FLIGHT CONTROL LOOP AUDIO Digital audio wave files transferred from reel-to-reel audio tapes submitted by Jack Garmon to the JSC Information Resources Directorate (IRD) for processing. Includes flight control loop audio and air to ground transmissions during key events from Apollo 11, 12, and 13.
Human Spaceflight video or images (including Shuttle) can be requested at the Media Resource Center (MRC). I have been told that Mike Gentry is good first point of contact: firstname.lastname@example.org
Some already digitized video/film is at a NASA site called Imagery Online which would have to be accessed via MRC.
But I have found a more convienent source to be http://www.spacecraftfilms.com/
, they have done the legwork already. Perhaps not all video are included in their DVDs... its hard to say, they claim it is complete, but one must check this somehow and I have not done so.