Transcoding selectively encrypted H.264 bitstreams

NM Thomas, D Lefol, DR Bull, DW Redmill

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)


This paper presents a novel secure transcoding scheme with H.264 compression, whereby only selected parts of the bitstream are encrypted to allow transcoding without decryption. Security comparisons are carried out for three schemes where encryption is applied to only the I frames, DC coefficients or motion vectors. I frame encryption, which provides the best security of the three schemes, is combined with two different transcoding architectures. Simulation results, on the 'Foreman' dataset show a significant performance enhancement in both systems, demonstrating their potential in consumer oriented commercial applications.
Translated title of the contributionTranscoding selectively encrypted H.264 bitstreams
Original languageEnglish
Title of host publication2007 Digest of Technical Papers International Conference on Consumer Electronics, Las Vegas, NV, United States
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1 - 2
Number of pages2
ISBN (Print)142440763X
Publication statusPublished - 10 Jan 2007

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