Distributing streaming media content using cooperative networking
NOSSDAV '02 Proceedings of the 12th international workshop on Network and operating systems support for digital audio and video
SplitStream: high-bandwidth multicast in cooperative environments
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Rate-adaptive codes for distributed source coding
Signal Processing - Special section: Distributed source coding
Streaming to mobile users in a peer-to-peer network
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
Stanford peer-to-peer multicast (SPPM): overview and recent extensions
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Error-resilient live video multicast using low-rate visual quality feedback
MMSys '11 Proceedings of the second annual ACM conference on Multimedia systems
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We consider a peer-to-peer multicast video streaming system in which untrusted intermediaries transcode video streams for heterogeneous mobile peers. Many different legitimate versions of the video might exist. However, there is the risk that the untrusted intermediaries might tamper with the video content. Quality estimation and tampering detection are important in this scenario. We propose that each mobile peer sends a digest of its received video to a quality monitoring server which has access to the original video. The digest is a Slepian-Wolf coded projection of the received video. Distributed source coding provides rate-efficient encoding of the projection by exploiting the correlation between the projections of the original and received videos. Two different projections are designed for quality estimation and tampering detection, respectively. We show that the projections can be encoded at a low rate of just a few kilobits per second. Compared to the ITU-T J.240 Recommendation for remote PSNR monitoring, our scheme achieves a bit-rate which is lower by at least one order of magnitude.