Difference between the H.264 and H.265

- Sep 19, 2017 -

H.264 and H.265(HEVC) are video compression standards.

H.264/Advanced Video Coding (AVC) is an industry standard for video compression. The H.264 standard is also called MPEG-4 Part 10 and is a successor to earlier standards such as MPEG-2 and MPEG-4. An ITU standard for compressing video based on MPEG-4 that is popular, especially for high-definition video. it can be twice as efficient as MPEG-4 Part 2.

H.265, also also known as HEVC (High Efficiency Video Coding), is the new video compression standard after H. 264. Compared with the existing popular video coding standard H. 264, H.265 combines the original technologies with advanced techniques to significantly improve the bit-stream, build a better connection between time delay and algorithm complexity and enhance the coding quality, which leads to best optimizations considerably.

So what is the difference between the H.264 and H.265?

1.H.265 vs H.264 Compression Ratio & Bandwidth Utilization

Compared with H. 264, H. 265 has a higher H.265 compression ratio which is primarily used to further reduce the design flow rate.At the same quality of coding, H.265 can reduce the size of the video file, so that it can take up less storage space, reduce the network bandwidth consumption in transmission and increase streaming speed.

At the same quality of coding, H.265 provides more powerful tools like CTU to save around 50% of the bit rate, and the coding efficiency can be doubled than H. 264.

2.H.265 vs H.264 Quality


In H. 264, each macroblock is fixed to the size of 16 x16 pixels, but the coding unit of H.265 can be widely chosen from a minimum of 8 x 8 to the maximum of 64 x 64.

0n the left hand side as the illustration shows is using traditional H.264 standard, and each macro block is fixed.

It is H. 265 standard on the right, the size of code unit is determined by the regional information. From the image contrast, we can see the video quality enhancement and the more delicate character’s skin H. 265 presents, which is much better than H. 264.

3.H.264 vs H.265 File Size

The size of a video is defined as duration and bit rate. As H.265 encodes the same information with lower bitrates but the same video quality when compared with H264, it’s advisable to convert the video from H.264 to H.265 for saving more space.

H.265 can help you to store your large amount of videos with smaller size, to stream your favorite movies with less network consumption. You can also benefit more from H.265 that provides a better visual quality.

Some of the key differences between H.265 (HEVC) and H.264 (MPEG 4 AVC) are listed below

NamesMPEG 4 Part 10 AVC (Introduced in 2004)MPEG-H, HEVC, Part 2 (Approved in Jan 2013 )
Key Improvement

- 40-50% bit rate reduction compared to MPEG-2 - Led the growth of HD content delivery for Broadcast and   Online

- 40-50% the bit rate reduction at the same visual   quality compared to H.264- Potential to realize UHD, 2K, 4K for   Broadcast and Online (OTT)
Industry adoptionDominant and accepted video codec for Terrestrial, Cable,   Satellite and IPTV broadcast. (ATSC/DVB/ISDB) Widely used across Blu-Ray, security   systems, videoconferencing , mobile video, media players, video chat   etc.mplementation demonstration across NAB, IBC and other   events starting 2012 from companies e.g. ATEME, Broadcom, Thomson ,   Harmonic (Cisco), Ericsson, Qualcomm etc.. Increased R&D across   Encoder/Decoder /CE vendors for software and hardware based solutions

upport Up to 4K (4,096×2,304)

Supports up to 59.94 fps 21 profiles ; 17 levels

Up to 8K UHDTV (8192×4320)

Supports up to 300 fps3 approved profiles, draft for additional 5; 13 levels

ProgressionSuccessor to MPEG-2 Part Successor to MPEG 4 AVC, H.264
Drawbacks Unrealistic for UHD content delivery due to high bit rate   requirements. Frame rate support restricted to 59.94Computationally expensive  (~ 300 % + ) due to   larger prediction units and expensive Motion Estimation (Intra prediction   with more nodes, asymmetric partitions in Inter Prediction).

Related product

Magicbox HD3 Plus(http://www.dibvision.com/2nd-generation-hdmi-av-vga-video-iptv)

Lowest cost and easy-to-use video streaming appliance designed for professional video producers who need to to broadcast high definition video. The encoder is a professional high and standard definition video coding product. The product has the function of supporting 1/8/16 channels HDMI video capture, generate dual stream of H.264 encoding output and the AAC audio format. The product has high integration and reasonable price. From any HDMI input source such as a camera or switcher, generates an H.264-encoded stream compliant with RTSP, HTTP, UDP, RTMP and HLS protocols. The product can be applied to education, health care, IPTV, conference, remote education, news interview, banking, transportation and other industries.

This series can deliver H.264-encoding video streams to various servers, such as Adobe Flash Server, Wowza Server, Windows Media Server and some other servers based on UDP/RTSP/RTMP/HTTP/HLS protocols.

With MagicBox HD3 plus series, it can broadcast To Any Streaming Platform and allows you to stream your live video content to a Wowza server or the platform of your choice at any time.


magicbox HD301p


magicbox HD308p


magicbox HD316p

Magicbox HD4 Plus(http://www.dibvision.com/2nd-generation-full-hd-hevc-h-264-iptv-encoder)

Magicbox HD4 Plus series can support 1/8/16 channels input, it is the world's New Generation HEVC H.265/H.264 hardware encoder in a professional grade, compact streaming appliance. Its advanced HEVC compression enables users to stream broadcast quality 1080p video with up to 50% bandwidth savings compared to today's H.264 standards.

The product has the function of supporting 1/8/16 channels HDMI, HDMI/AV, HDSDI, HDMI/AV/Ypbpr/VGA video capture, generate dual stream of H.264/H.265 encoding output and the MP3, AAC audio format. The product has high integration and reasonable price which can generate an H.265-encoded stream compliant with RTSP, HTTP, UDP, RTP, RTMP and HLS (option) protocols.

Magicbox HD4 Plus boasts an all-hardware compression chip for real time encoding with advanced audio and meta data handling – all packaged in a portable device with low power consumption, which makes it possible to take next generation HEVC encoding from the server rooms into the field for professional and industrial applications with easy integration to education, health care, IPTV, conference, remote education, news interview, banking, transportation and other industries.


Magicbox HD401 Plus


Magicbox HD408 Plus


Magicbox HD416 Plus




Related Products