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posted by martyb on Sunday August 30 2015, @01:09PM   Printer-friendly
from the how-many-pixels-is-enough dept.

Pirates have apparently found a way to bypass the High-bandwidth Digital Copy Protection (HDCP) v2.2 DRM used on Netflix's Ultra HD (UHD = 3840×2160 resolution) content. The release group iON has uploaded a 17.73 gigabyte, 2160p/UHD copy of Breaking Bad's first episode:

The media info for the release shows that the episode has a bit rate of 41.3 Mbps and overall the video specs make it hard to play the file smoothly on the average computer. At the time of writing the 4K leak is only available on private torrent trackers but it's expected to eventually leak to public sites as well. It's currently unknown if the release group broke HDCP 2.2 or if they found another way to capture the stream.

Leaked drafts of the 4K copy protection agreement between Sony and Netflix reveals that the streams are generally well-protected. They also include a watermark so that leaks can be traced back to the source. "The watermark must contain sufficient information such that forensic analysis of unauthorized recorded video clips of the output video shall uniquely determine the account to which the output video was delivered," the document reads.

Netflix informs TF [Torrent Freak] that they are looking into the reported leak and the company will do its best to prevent similar breaches in the future. "Piracy is a global problem. We, like others[sic] content providers, are actively working on ways to protect content featured on our site," a Netflix spokesperson told us.

The torrent description mentions that the file is an "HDMI cap of UHD Netflix with a lossless capture card, encoded with x264." The use of H.264 encoding accounts for the relatively massive file size and bit rate, since Netflix uses H.265/HEVC to encode and deliver UHD streams at a bit rate of about 15.6 Mbps, far less than the 41.3 Mbps seen here.


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  • (Score: 3, Informative) by Anonymous Coward on Sunday August 30 2015, @05:29PM

    by Anonymous Coward on Sunday August 30 2015, @05:29PM (#229903)

    > Wasn't the HDCP/HDMI master key leaked?

    It wasn't leaked, it was cracked due to vulnerabilities in the protocol.

    The 4K content licenses mandate HDCP 2.2 which has a different protocol and a new set of keys.

    > I knew that HDMI switchboxes was now possible and knowing China, would make this by the thousands on the cheap for stores to use.

    Even before it was cracked HDCP strippers were available from China, they were nominally sold as HDMI splitters and they used official HDMI chipsets, its just that on the outputs they 'forgot' to enable HDCP handshaking so the signal was in the clear.

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