The clip was posted after the Springboks' 49-3 World Cup thrashing of Italy, with Mapimpi walking away from a group of white replacement players.
Namibia battled to within a point at 10-9 after half an hour before the two-time defending champions accelerated away.
Gabuza revealed after the game that he lost his son in the build-up to the clash but didn’t tell the team in order to keep the focus on the match against Highlands Park.
The Proteas' supporters are mostly disappointed after India beat South Africa by 203 runs in the first Test to take a 1-0 lead in the three-match series.
Local fans have reacted to a video on social media of Mapimpi attempting to approach a group hug with the likes of Frans Steyn but then turning back.
In the final, Djokovic will face Australian qualifier John Millman, who squeezed past American opponent Reilly Opelka.
Kolbe was withdrawn late on as a precaution in Friday's 49-3 Pool B win over Italy in Shizuoka after twisting his left ankle.
After meeting with the affected parties in Langebaan on Thursday night, the SAHRC said it has evidence such as voice notes and video content.
India kept the pressure on the Proteas in the nine overs that were possible before bad light brought a slightly early close to the day's proceedings.
The South African Human Rights Commission’s Buang Jones said the complainants want monetary compensation of over R1 million and an apology to the coloured community.
