H.265 vs. H.264Aaron SaksProduct & Technical ManagerHanwha Techwin America

Agenda

Introduction

H.264 Vs. H.265

WiseStream Smart Codec

Live Demo

Q&A

Notes:

This webinar is being recorded and will be available for replaying. The presentation materials will also be available in PDF format.

Please visit https://www.hanwhasecurity.com/trainings/webinars/ to view webinars & sign up for future webinars.

We will take Q&A time permitting. In case there is not time to get to all of the questions, we will reply to you individually afterwards. Please use the Chat or Q&A section.

All participants have been put in to listen only mode.

• History • Benefits of H.265 • Encoding & GoV• Macro blocks • Motion vectors• Pros & Cons• Triple Codec• How to configure H.265 profile settings • WiseStream & Adaptive Smart Codecs Introduction• Tools & functions of Smart Codecs• How to configure WiseStream Smart Codec settings• How to check bit rate, GOV, etc. – WiseNet Device Manager• Final Thoughts & Q&A

Agenda

Hanwha H.265 White Paper

H.264: Advanced Video Coding (MPEG-4 AVC)H.265: High Efficiency Video Coding (HEVC)

H.265 was developed for high resolution transmission with low bandwidth without losing resolution or picture quality.

1992: JPEGMid 1990’s: MJPEG1995: MPEG-22005: H.2642015: H.265

History

Driving requirement for H.264 = Megapixel cameras becoming commonplace.Driving requirement for H.265 = Higher Multi-Megapixel cameras becoming commonplace.

5MP 2592 x 1944

4K/8MP4096 x 2160

12MP 4000 x 3000

8K 7680 x 4320

History

Improved picture quality @ lower bit rates.

Reducing H.264 De-blocking filter artifacts.

HEVC includes Adaptive Motion Vector Prediction, a new method to improve inter-

prediction.

Sample Adaptive Offset An additional filter that reduces artifacts at

block edges

Benefits of H.265

Comparison of H.265 vs. H.264

Inter-Frame encoding: Compressing & transmitting only the changes between subsequent frames.

Frame 1 Frame 2

Encoding H.26x (1/2)

Encoding the frames: Divide the image to blocks that is 16X16 or 32X32 pixels (MacroBlock MB).

Frame 1Full frame

(I or Key Frame)

Frame 2Partial Frame

(P Frame)

Encoding H.26x (2/2)

Bandwidth

Frames1 2 3 4 5 30 1 3 4 5

Full frame (I-Frame) frequency will depend on the GOV length.

This number represents how many P-Frames should pass until an I-frame is created and sent.

I-Frame

P-Frame

I-Frames and P-Frames

H.264Max Block size

16X16

H.265Block size

16x16 - 64X64

Macro Block Size

8X8

8X4

4X8

8X4

4X8

4X4

4X4

4X4

H.264 Blocks H.265 Blocks

4X4

H.264 options + the followingH.264 options

H.265 replaces 16×16 pixel macroblocks, with coding tree units (CTUs) which can use larger block structures of up to 64x64 samples and can better sub-partition the picture into variable sized structures.

H.265 initially divides the picture into CTUs which can be 64×64, 32×32, or 16×16 with a larger pixel block size usually increasing the coding efficiency.

Macro Blocks

H.265 H.264

H.265 allows predicted blocks to be coded in different block sizes. Each top level coding unit (or CTU) is first coded as a prediction quad-tree, where at each depth the encoder decides whether to encode with merge/skip, inter, or intra coding. The residual from those predictions is then coded with a second quad-tree which can optionally have greater depth than the prediction quad-tree. For instance, this allows the residual error from a 32×32 inter coded coding unit (CU) to be represented by a mixture of 16×16, 8×8, and 4×4 transforms.

Macro Block Size

H.264 is not as flexible as H.265 when only part of the block has changed.

Being reduced to

Macro Blocks

Motion vectors use the previously decoded block from the previous image and find it in the following frame and then use the original image to find the differences. If found, the encoder sends the Motion vector + Error in block

H.2649 directions

H.26534 directions

Motion Vectors

H.264

H.265

Motion Vectors

Good:Bandwidth and Storage saving up to 50% for the same video quality.Reduce the side effect of video latency.

Bad:Need more resources to decode (Playback)/encoder (Camera)

Note: - It is also worth mentioning that H.265 is a different Encoding which require a different

hardware to encode which requires camera manufactures buy/develop different chipset and redesign of the PCB boards of the new cameras

- More compression is not the same as “different method of encoding” as the first compromise the quality if the video as the other is made not maintain the same video quality at a lower bitrate

- You can record H.265 and Live can be H.264 (Our cameras can send both H.264 and H.265 at the same time)

The Good & Bad

Hanwha cameras utilize a triple codec, allowing H.265 & H.264 & MJPEG to stream all at the same time.

This is beneficial for integrating with 3rd party systems that don’t (yet) support H.264, allowing installation of the best camera and migrating to H.265 once VMS support is provided.

Triple Codec also allows different streams to be sent for different purposes (Live/record/mobile, etc.)

Triple Codec

WiseNet X, P, Q

Hanwha Cameras that support H.265

WiseStreamIntelligent Codec

Hanwha WiseStream White Paper

What is WiseStream?

Wisestream is an intelligent codec for H.265 and H.264 to lower bandwidth and storage needs.

WiseStream works automatically based on the scene and adjusts as needed.

WiseStream 1.0 Reduces Bitrate using the following Methods, and allows independent configuration and enablement as needed by:

1. Identifying motion areas of the scene and providing higher compression to background areas while retaining high quality for motion zones. This happens automatically and dynamically. WiseStream provides a setting of high, medium, and low for the relative quality desired. Configured globally as needed.

2. Dynamically adjusting the GOV (I-Frame Interval) which is the biggest frame size depending on the scene, amount of motion present and network activity. Configured per profile as needed.

WiseStream is supported on Wisenet X, P, & Q Series cameras.

WiseStream 1.0

WiseStream II : H.265+WiseStream II Improve bandwidth by up to 99%

GOP/GOV FPS ROI NR Etc Reductionrate

HanwhaWiseStream II

DynamicGOV

DynamicFPS

DynamicROI

HF cut off Engine/3D-NR

Predictive Bitrate Control

Up to 99%

HH.264+

Predictiveencoding X

BackgroundNoise

SuppressionX

LongBitrateControl

Up to 50%

A Dynamic GOP

DynamicFPS

DynamicROI X X Up to 90%

P GOPControl X X

3D-MNR/Frequency

Dividedfilter

X Up to 70%

1080P Full HD(H.264)

4K UHD(H.265 + WiseStream)

For example 4K WiseNet Premium series is supporting WiseStream and H.265 coding technology then get much bigger surveillance image but keep same data bandwidth of 1080p FHD legacy H.264 system.

3Mbps

Bigger picture, same bandwidth

Dynamic Motion-Based Regions of Interest

Intelligent Codecs increase the spacing between I-Frames when there is little/no activity in the scene.

When motion occurs, it immediately inserts an I-Frame, and then continues at the normal GOV interval.

This drastically reduces bandwidth, as I-Frames are bandwidth intensive.

Bandwidth

Frames1 2 3 4 5 30 1 3 4 5

I-Frame

P-Frame

I-Frames and P-Frames

Bandwidth

Frames1 2 3 4 5 180 1 3 4 5

I-Frame

P-Frame

High Activity

Low Activity

Additional techniques in WiseStream to reduce bitrate

Visualization of WiseStream Bandwidth usage scenario

WiseStream ON WiseStream OFF

Low Complexity- Compression- GoV length

Low Complexity- Compression- GoV length

High Complexity- Compression- GoV length

Adjust BW by dynamicallyAverage BW and Storage are reduced!

Additional WiseStream Bandwidth Reduction Visualization

Will result of a significate bandwidth reduction, up to 75%

When You combine H.265/H.264 with WiseStream

DGOV 240WiseStream Middle

DGOV 240WiseStream Off

DGOV 240WiseStream MiddleDFPS @ 1FPS

1 2

3 4

The 4 stages of bandwidth savings…

WiseStream Demonstration Video

https://www.youtube.com/watch?v=4CB6trl5uiAhttps://www.youtube.com/watch?v=WmIpRbg6xVY

WiseStream 2.0WiseStream 2.0 improves upon the industry leading bandwidth saving technology by adding Dynamic Frame Rate Control.

Dynamic Frame Rate allows the camera to stream at low frame rate when there is no motion to save bandwidth.

When motion is detection, the frame rate kicks back to the set rate, and utilizes WiseStream to continue saving bandwidth.

WiseStream 2.0 is supported on Wisenet X Series cameras.

https://youtu.be/ZDefmczVjsw

• All Hanwha NVRs are able to record I-frame on non-event/continuous recording, then kick up to full frame rate on event.

• With WiseStream, the I-Frame may be up to 16 seconds away.

• DFPS allows us to still have a baseline low frame rate (such as 1FPS, 5FPS, etc.) non-event recording stream that kicks up to full frame rate on event.

WiseStream 2.0

• WiseStream II also reduces bandwidth by reducing noise, especially in low light scenes.

• A low pass filter and 3D-noise reduction techniques are applied with different intensity depending on the level of WiseStream sensitivity selected (low, medium, or high).

WiseStream II – Noise Reduction

WiseStream Configuration OptionsWiseStream allows a) Dynamic Motion Zones, b) DGOV, & c) DFPS to be enabled independently.

This allows you full flexibility & VMS integration.

• Use WiseNet Device Manager to view current bitrate, I-Frame spikes, frame rate, etc.

• Use full-screen to check for artifacts, etc.• Use WiseNet Device Manager to easily set profile settings in batch.

Check Point

Hanwha camera that support WiseStream

WiseNet X, P, Q

Questions?Thank you!