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The number of bandwidth-hungry applications and services is constantly growing. HTTP adaptive streaming of audio- visual content accounts for the majority of today’s internet traffic. Although the internet bandwidth increases also constantly, audio-visual compression technology is inevitable and we are currently facing the challenge to be confronted with multiple video codecs. This paper provides a practical evaluation of state of the art video codecs (i.e., AV1, AVC/libx264, HEVC/libx265, VP9/libvpx-vp9) for large- scale HTTP adaptive streaming services. In anticipation of the results, AV1 shows promising performance compared to established video codecs. Additionally, AV1 is intended to be royalty free making it worthwhile to be considered for large scale HTTP adaptive streaming services.