Keyframe alignment for encoding video at multiple bitrates
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United States of America Patent
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Feb 20, 2018
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app pub date -
Mar 28, 2016
filing date -
Dec 20, 2012
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Abstract
In one embodiment, a method includes: retrieving information for frame type decisions made by a first encoding process when encoding 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, performing: determining a frame type decision from the information for frame type decisions, wherein the frame type decision comprises a frame type of a frame for the video that was encoded at the first bitrate; inserting a keyframe in the second encoded video based on the frame type decision, wherein the inserted keyframe in the second encoded video is aligned with a corresponding keyframe in the first encoded video; and continuing to retrieve frame type decisions and inserting keyframes in the second encoded video until the video is encoded at the second bitrate.
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