Keyframe Alignment for Encoding Video at Multiple Bitrates

摘要

In one embodiment, a method receives a frame type storage medium including frame type decisions made by a first encoding process to encode a video at a first bitrate to generate a first encoded video. While performing a second encoding process to encode the video at a second bitrate to generate a second encoded video, the method performs: retrieving information from the storage medium regarding a frame type decision made during the first encoding process; inserting a keyframe in the second encoded video based on the retrieved information from the storage medium, wherein the inserted keyframe in the second encoded video is aligned with a corresponding keyframe in the first encoded video; and continuing to retrieve information from the storage medium and inserting keyframes in the second encoded video. Keyframes in the first encoded video are aligned with keyframes in the second encoded video.

主权项

1. A method comprising:
receiving a frame type storage medium including information for frame type decisions made by a first encoding process to encode a video at a first bitrate to generate a first encoded video at the first bitrate, wherein the frame type decisions were made based on characteristics of the video; and while performing a second encoding process to encode the video at a second bitrate to generate a second encoded video at the second bitrate, performing:
during the second encoding process, retrieving information from the frame type storage medium regarding a frame type decision made during the first encoding process of the video at the first bitrate;inserting a keyframe in the second encoded video based on the retrieved information from the frame type storage medium, wherein the inserted keyframe in the second encoded video is aligned with a corresponding keyframe in the first encoded video; andcontinuing to retrieve information from the frame type storage medium and inserting keyframes in the second encoded video until the video is encoded at the second bitrate,wherein keyframes in the first encoded video at the first bitrate are aligned with keyframes in the second encoded video at the second bitrate.