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Video Transcoding Clouds Comparison 2019


compression.ru
in cooperation
with
Lomonosov MSU
Graphics & Media Lab
(Video Group)

Video group head:
Dr. Dmitriy Vatolin

Project head:
Dr. Dmitriy Kulikov

Measurements, analysis:
Egor Sklyarov,
Sergey Zvezdakov,
Anastasia Antsiferova

Dubna State University
Institute for Information
Transmission Problems RAS

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Description


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)


6 cloud encoding services
Alibaba, Amazon Elastic Transcoder, AWS Elemental MediaConvert, Coconut, Qencode, Zencoder
4 FUllHD video sequences
epson, fountains, hawk and hockey from vimeo website
Three resolutions
FullHD, HD, SD
Three encoding use cases (presets)
Encoding with similar options, default options of tested services and with tuned options for our test videos
HTML and PDF documents
118 interactive charts and 33 pages

List of compared services

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

Overall conclusions


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.

Similar encoding presets

According to only YUV-SSIM quality scores, the least bitrate for similar quality among our competitors on average is provided by:

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We did not take into account encoding time, but considered the price. The price and quality trade-off on average for test videos is shown in the plot below. There are three Pareto-optimal encoders: Qencode (H.264), Qencode (HEVC) and Zencoder (HEVC).
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Tuned presets

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).

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Test video set


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.

epson
Epson printer commercial, frequently changing short scenes.
FullHD, 24fps
https://vimeo.com/120309899
fountains
Static camera, several fountains in front of which people walk.
FullHD, 25fps
https://vimeo.com/92772987
hawk
Hawk sitting on a branch against the background of the sea.
FullHD, 30fps
https://vimeo.com/109321182
hockey
Video about the hockey team, contains dynamic and slow scenes.
FullHD, 24fps
https://vimeo.com/117014819

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Contact Information


compression.ru
in cooperation
with
Lomonosov MSU
Graphics & Media Lab
(Video Group)
Dubna State University
Institute for Information
Transmission Problems RAS

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Materials about MSU Codec Comparison


Call for HEVC codecs 2019
See all MSU Video Codecs Comparisons

MSU video codecs comparisons resources:


Other Materials


Video resources:

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Last updated: 10-December-2019

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Server size: 8069 files, 1215Mb (Server statistics)

Project updated by
Server Team and MSU Video Group


Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab