Image
  • Our Solutions
  • iSIZE News
    • Media Pack
  • iSIZE Team
    • Careers
  • Contact
  • FAQ
  • Login
  • Our Solutions
  • iSIZE News
  • Media Pack
  • iSIZE Team
  • Careers
  • Contact
  • FAQ
  • Login

Demo

A core technical objective of iSize is to find the optimal way to preprocess (or precode – in our nomenclature) any input video into a (typically) smaller pixel stream, such that any video encoder can achieve the best video quality at a given bitrate, or save the maximum amount of bits for a given perceptual quality level. We are especially interested in this problem given that perceptual quality can now be measured with advanced perceptual quality metrics from the literature, e.g., using the fusion of multiple quality metrics (akin to VMAF of Netflix) or via other advanced metrics.

We present here seven Full HD (FHD) test video sequences from Xiph.org, encoded via our platform at BitSave.tech. They have been chosen to represent a wide variety of content with rapid/irregular motion, rich texture details, and camera motion/zoom. Each sequence was compressed with the HEVC encoder at 5mbps, 8.5mbps and 14mbps, with and without the use of the iSize deep precoder for perceptual optimization. The examples illustrate

  • the noticeable perceptual quality improvement brought by the iSize precoder at the same bitrate (iSize+HEVC at 5mbps versus HEVC at 5mbps),
  • comparable or higher quality at 40% lower bitrate than the HEVC encoder (iSize+HEVC at 5mbps versus HEVC at 8.5mbps, and iSize+HEVC at 8.5mbps versus HEVC at 14mbps).

The full details of our encoding and viewing tests are discussed in the associated article in our news page. Each of the sequences below presents the video in two halves (since we want to show two concurrent videos in 1080p resolution, we can only show the half side of each video at any given viewing). The full set of videos can be downloaded via this link for independent inspection of the HEVC bitstream playback of each case.

aspen_1080p30_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:94.2) versus HEVC at 5mbps (VMAF:85.6)

click to watch

iSize+HEVC at 5mbps (VMAF:94.2) versus HEVC at 8.5mbps (VMAF:90.7)

click to watch

iSize+HEVC at 8.5mbps (VMAF:98.6) versus HEVC at 14mbps (VMAF:94)

click to watch

controlled_burn_1080p30_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:99.4) versus HEVC at 5mbps (VMAF:91.2)

click to watch

iSize+HEVC at 5mbps (VMAF:99.4) versus HEVC at 8.5mbps (VMAF:94.1)

click to watch

iSize+HEVC at 8.5mbps (VMAF:100) versus HEVC at 14mbps (VMAF:96.1)

click to watch

crowd_run_1080p50_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:76.5) versus HEVC at 5mbps (VMAF:67.8)

click to watch

iSize+HEVC at 5mbps (VMAF:76.5) versus HEVC at 8.5mbps (VMAF:79.9)

click to watch

iSize+HEVC at 8.5mbps (VMAF:89.5) versus HEVC at 14mbps (VMAF:89.3)

click to watch

old_town_cross_1080p50_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 5mbps (VMAF:92.5)

click to watch

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 8.5mbps (VMAF:93.6)

click to watch

iSize+HEVC at 8.5mbps (VMAF:100) versus HEVC at 14mbps (VMAF:94.2)

click to watch

rush_field_cuts_1080p30_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:98.6) versus HEVC at 5mbps (VMAF:88.8)

click to watch

iSize+HEVC at 5mbps (VMAF:98.6) versus HEVC at 8.5mbps (VMAF:94.1)

click to watch

iSize+HEVC at 8.5mbps (VMAF:100) versus HEVC at 14mbps (VMAF:96.6)

click to watch

touchdown_pass_1080p30_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 5mbps (VMAF:96)

click to watch

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 8.5mbps (VMAF:97.4)

click to watch

iSize+HEVC at 8.5mbps (VMAF:100) versus HEVC at 14mbps (VMAF:98.1)

click to watch

tractor_1080p25_i5_c5_lhs

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 5mbps (VMAF:99.3)

click to watch

iSize+HEVC at 5mbps (VMAF:100) versus HEVC at 8.5mbps (VMAF:99.7)

click to watch

iSize+HEVC at 8.5mbps (VMAF:100) versus HEVC at 14mbps (VMAF:99.8)

click to watch

Image

iSIZE Technologies – Bringing Efficient, Intelligent and Sustainable Solutions to Video Delivery

Sitemap

  • Our Solutions
  • iSIZE News
  • Media Pack
  • iSIZE Team
  • Careers
  • Contact
  • FAQ
  • Login

Contact iSize

Email:

info@isize.co

Office:

9th Floor 107 Cheapside, London EC2V 6DN, United Kingdom

Connect:

© 2020 iSIZE Limited, 10388803. All Rights Reserved

  • Privacy Policy
  • Terms of Use

How to save on your live streaming

Substantial savings with iSIZE BitSave on AWS - $176 per hour for every 5,000 viewers
READ MORE
Powered by Convert Plus
Close
Manage Cookie Consent
close
We use cookies to optimize our website and our service.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Manage options Manage third parties Manage vendors Read more about these purposes
View preferences
{title} {title} {title}