Google Inc.

Stan Vitvitskyy

Claudionor Coelho

Sean Purser-Haskell

Hao Zhuang

Daniele Moro

This document describes systems and techniques for encoding a video frame using different compression ratios or compression algorithms for text blocks and non-text blocks. The described systems and techniques can determine, using a machine-learned model, which blocks of a frame include and do not include text. The described systems and techniques can then use a different compression ratio or compression algorithm for text blocks than the compression ratio or compression algorithm used for non-text blocks. For example, the systems and techniques can encode the text blocks using a first compression ratio that results in higher video quality than a second compression ratio used on at least some non-text blocks. In this way, the described systems and techniques can improve text legibility in a video file without significantly increasing the bandwidth requirements to transmit the video file to remote computing devices.

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San Jose, CA, United States of America

Stan Vitvitskyy