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• Gow pro video format for mac mp4#

The richness of GPMF comes from its ability to nest multiple sensor streams into a single MP4 track, and do it in a self-describing way. The timing relationship between metadata collection and the video and audio captured is stored using existing MP4 mechanisms, so if a developer can handle video and audio within an MP4, metadata is very similar.

GPMF, the new format without a precise acronym, GoPro Metadata Format or now General Purpose Metadata Framework, is a new track within an MP4 file, working just like video and audio which have their own tracks. We needed a new standard, so GoPro created one, and made it completely free (open source linked below.) Finally, it must store all of today’s and tomorrow’s wide range of sensor data, and be easily retrieved in more than GoPro’s own utilities, without technical or legal hurdles. Metadata can’t be lost because you ejected the battery before the capture was complete*, or crashed into a tree that caused the same, so the metadata must be regularly interleaved with video and audio, not simply added to the end upon a file close. Yet we must store telemetry within the video, not in a separate file, so consumers can’t misplace side-car files, or be expected to upload them separately. The popular consumer video file format MP4 had no clear provision to store telemetry or any time varying metadata. Metadata should answer, how was this file made? In what environment? At what location? If, when and how was the camera moving? At GoPro, we’ve had the ambition to solve these questions, but it turned out to be treading new ground. Video, where is your metadata? If random consumer photos can be formed into timelapses, the potential for video is even greater.