Media extractor tracks for file format track selection

摘要

A video coding apparatus may be configured to utilize media extractors in a media extractor track that reference two or more non-consecutive network access layer (NAL) units of a separate track. An example apparatus includes a multiplexer to construct a first track including a video sample comprising NAL units, based on encoded video data, wherein the video sample is included in an access unit, construct a second track including an extractor that identifies at least first one of the NAL units in the video sample of the first track, and wherein the extractor identifies a second NAL unit of the access unit, wherein the first identified NAL unit and the second identified NAL unit are non-consecutive, and include the first track and the second track in a video file conforming at least in part to ISO base media file format. The identified NAL units may be in separate tracks.

主权项

1. A method for encoding video data, the method comprising:
constructing, by a source video device, a first track including a video sample comprising a plurality of network access layer (NAL) units based on encoded video data, wherein the video sample is included in an access unit; constructing, by the source video device, a second track including a plurality of extractors, the plurality of extractors including an extractor that identifies a plurality of NAL units of the first track, the identified plurality of NAL units including a first identified NAL unit of the NAL units in the video sample of the first track and a second NAL unit of the access unit, wherein the first identified NAL unit and the second identified NAL unit are non-consecutive, and wherein the extractor identifies the first NAL unit and the second NAL unit without identifying any NAL units between the first NAL unit and the second NAL unit; including the first track and the second track in a video file conforming at least in part to International Organization for Standardization (ISO) base media file format; and outputting the video file.