Preview streaming of video data

摘要

A system and method for generating preview data from video data and using the preview data to select portions of the video data or determine an order with which to upload the video data. The system may sample video data to generate sampled video data and may identify portions of the sampled video data having complexity metrics exceeding a threshold. The system may upload a first portion of the video data corresponding to the identified portions while omitting a second portion of the video data. The system may determine an order with which to upload portions of the video data based on a complexity of the video data. Therefore, portions of the video data that may require additional processing after being uploaded may be prioritized and uploaded first. As a result, a latency between the video data being uploaded and a video summarization being received is reduced.

主权项

1. A computer-implemented method for uploading video data, the method comprising:
receiving, from an image capture device, sampled video data associated with first video data, the sampled video data having a first frame rate that is different than a second frame rate of the first video data and comprising a first portion associated with a first time and a second portion associated with a second time captured after the first time; determining a plurality of color histograms, including determining a first color histogram that corresponds to a first video frame in the sampled video data; determining a plurality of similarity scores, including:
determining a first similarity score, which corresponds to a first similarity between a first video frame and a second video frame in the sampled video data, by comparing the first color histogram to a second color histogram corresponding to the second video frame; anddetermining a second similarity score, which corresponds to a second similarity between the first video frame and a third video frame in the sampled video data, by comparing the first color histogram to a third color histogram corresponding to the third video frame; determining that a first group of similarity scores of the plurality of similarity scores are within a first range; determining a first series of contiguous video frames corresponding to the first group of similarity scores; determining that a second group of similarity scores of the plurality of similarity scores are within a second range; determining a second series of contiguous video frames corresponding to the second group of similarity scores, the second series beginning with a fourth video frame in the sampled video data; determining a plurality of transition points in the sampled video data, including determining a first transition point that corresponds to an intersection between the first series and the second series by determining that a third similarity score, which corresponds to a third similarity between the first video frame and the fourth video frame, is below a threshold; determining a first number of the plurality of transition points corresponding to the first portion; determining a second number of the plurality of transition points corresponding to the second portion; determining that the second number of transition points exceeds the first number of transition points; and sending, to the image capture device, a request to send the second portion prior to sending the first portion.