Although the preferred way to contribute to Mapillary is to upload geotagged images, it is also possible to upload videos to Mapillary. In that case, the video will be turned into images during the process. This is useful for situations when you are capturing for more than Mapillary purposes—like when you are using a dashcam and want to upload dashcam videos. The only criterion is that you have a video file in mp4 format and an accompanying .gpx file with GPS information.
Video upload currently works via the Mapillary legacy web, where you upload the video file and the .gpx file and make sure their starting points are synchronized. To not lose any frames, you should make sure that your GPX track is at least as long as the video (start recording the GPX first, then video; and stop video first, then GPX).
Our system will harvest images from the video and turn them into sequences. Due to this extra step, it can take a bit longer compared to a regular upload until you see your images on the map (up to a day). We suggest that you keep the length of your videos under 15-20 minutes for easier uploading.
Take a look at this video tutorial to see how the process goes.