Game Capture HD
Used by 2 peopleelgato.com ↗

“The only other software I use is all the games we play and record using Game Capture HD.”
Danny O'Dwyer Interview, Video game documentarian · via Uses This 
“For research and recording video game footage I use the El Gato Game Capture High Definition Game Recorder to collect gameplay.”
Anita Sarkeesian Interview, Media critic, creator (Feminist Frequency) · via Uses This