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Allowing degraded play of protected content using scalable codecs when key/license is not obtained
Allowing degraded play of protected content using scalable codecs when key/license is not obtained
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机译:当未获得密钥/许可证时,允许使用可伸缩编解码器降级播放受保护的内容
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摘要
Embodiments are directed towards enabling a portion of a protected content stream to be played in a degraded quality or experience at a client device when a key and/or license for some other portion of the content stream is unobtainable, or is not obtained by the client device. A content stream has a plurality of layers, with a baseline layer having a lowest quality level of the plurality of layers that is unencrypted, while at least one other layer is encrypted. When the key to decrypt the encrypted layer(s) is unobtained, at least the baseline unencrypted layer is allowed to still play at the client device.
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