Juji gatame from mount (spanish language)

Americana armlock from Mount (spanish language)

Marcelo Garcia talks with Stephan Kesting about how to set up and execute the North South choke.

Exceptionally pedantic and well demonstrated juji from mount or s-mount.

Roger Gracie is the most dominant BJJ champ in the sport's history. In this video from Brazilian TV channel Combate, he shares his most feared technique, the bane of numerous elite black belts: the cross choke from mount. Hit the CC button for subtitles. If they're not working for you, try updating your Flash player. Video originally uploaded to YouTube by Luiz Sacchi.

Armlock/americana from mount

Saolo with good details about staying in mount and working your way torwards a double attack. Sample clip from Saolo's BJJ Revolution DVD (groundfighter.com)

Details for maintaining the mount position (Sample from Demian Maia's Science of Jiu-Jitsu 2 [vol 3] - groundfighter.com)