compression.ru
with
Graphics & Media Lab
(Video Group)
Transmission Problems RAS
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compression.ru |
in cooperation with |
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Lomonosov MSU
Graphics & Media Lab (Video Group) |
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Dubna State University | |||
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Institute for Information Transmission Problems RAS |
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If you use any cloud for video encoding, participate in testing its performance to compare it with other services 
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This report represents the results of independent comparison of cloud-based video-encoding services. Cloud-based video-encoding services are becoming more popular, and selecting one for your tasks is quite difficult. In our experience, encoding performance may entirely differ from service to service. The results of our comparison showed that in the case of cloud services that provide the same quality, the file-size difference can reach 100% and the price difference is 700%.
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Cloud Report Objective comparison of cloud-based video-encoding services Released on December, 3 Free full version (PDF & HTML documents) 
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6 cloud encoding services Alibaba, Amazon Elastic Transcoder, AWS Elemental MediaConvert, Coconut, Qencode, Zencoder |
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4 FUllHD video sequences epson, fountains, hawk and hockey from vimeo website |
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Three resolutions
FullHD, HD, SD |
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Three encoding use cases (presets) Encoding with similar options, default options of tested services and with tuned options for our test videos |
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HTML and PDF documents 118 interactive charts and 33 pages |
| Cloud Encoding Service | Supported standards | |
| 1 |
Alibaba
Alibaba | H.264, HEVC |
| 2 |
Amazon Elastic Transcoder
Amazon |
H.264 |
| 3 |
AWS Elemental MediaConvert
Amazon |
H.264, HEVC |
| 4 |
Coconut
Coconut |
H.264, HEVC |
| 5 |
Qencode
Qencode |
H.264, HEVC |
| 6 |
Zencoder
Zencoder |
H.264, HEVC |
The report includes the results of services comparison with three sets of encoding presets. The first is a comparison using similar (balanced) encoding options (equal encoding recipes set for all services). The second is a comparison using presets which are set as default on service. And one more part included a case with our options chosen for test videos, which were applied to one encoding service which was the only that has an ability to provide a big number of options.
According to only YUV-SSIM quality scores, the least bitrate for similar quality among our competitors on average is provided by:
One part of our comparison involved the use of additional encoding parameters to increase encoding performance. It involved pre-measurements to find good presets for each video, which then was provided to encoding service. The only service which allows users to vary a big number of encoding settings is Qencode (11 options which influence encoding performance: trellis, me_method, partitions, b_strategy, me_range, i_qfactor, qcomp, refs, directpred, sc_threshold, subq).
First place in the quality competition goes to Qencode (H.264, tuned presets), second place goes to Alibaba (H.264, balanced preset), and third place to Qencode (H.264, balanced preset).
Test video set included 4 FullHD videos which were chosen from MSU video collection. In this year, the collection was enlarged up to 18418 sequences which were chosen from 700000+ user-generated videos posted on Vimeo website.
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epson
Epson printer commercial, frequently changing short scenes. FullHD, 24fps https://vimeo.com/120309899 |
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fountains
Static camera, several fountains in front of which people walk. FullHD, 25fps https://vimeo.com/92772987 |
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hawk
Hawk sitting on a branch against the background of the sea. FullHD, 30fps https://vimeo.com/109321182 |
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hockey
Video about the hockey team, contains dynamic and slow scenes. FullHD, 24fps https://vimeo.com/117014819 |
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compression.ru |
in cooperation with |
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Lomonosov MSU
Graphics & Media Lab (Video Group) |
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Dubna State University | ||
|
|
Institute for Information Transmission Problems RAS |
MSU video codecs comparisons resources: