A new movie format "HEVC (H.265 & MPEG-H Part 2)" in which the file size becomes half of the conventional size

MP3 which is used as a format of a music file is "MPEG-1 Audio Layer-3It stands for "The Moving Picture Experts Group (MPEG)It is the audio standard of the movie file format "MPEG - 1" made by.

The MPEG held a meeting in Stockholm and submitted a draft committee to make "HEVC" highly compressed as an international standard, as a new movie file format.

MPEG Media Transport reaches committee draft milestone


New MPEG standard halves video bandwidth with no quality loss


At the meeting where 450 representatives from communications, computers, televisions, consumer electronics etc participated, draft committee of HEVC (High Efficiency Video Coding) was approved.

There are various formats of movie files, but MPEG standardizes "MPEG-1" "MPEG-2" "MPEG-4" among them. MPEG-4 AVC developed to pursue the compression efficiency of moving images among MPEG-4ITU-T (International Telecommunication Union Telecommunication Standardization Division)As it is joint standardization withH.264Also called.

MPEG-4 AVC (H.264) is basically the same compression algorithm itself as MPEG-1, MPEG-2, H.261, etc. However, by applying many improvements, it is twice MPEG-2 This compression efficiency is realized. For example, it is used as one of the video codecs of Blu-ray Disc, it is also used in YouTube and Nico Nico video, etc. It is a very popular technology.

HEVC approved this time has been called H.265, MPEG-H Part 2 so far. Mr. Per Frojdh, Ericsson Visual Technology, who served as the secretary of the General Assembly, said the outcome of this technology would have a major impact on the industry.

This "HEVC" is the next generation high-compression video coding technology which Mitsubishi Electric demonstrated at CEATEC JAPAN 2010.


The schedule of international standardization at this point was as follows. As scheduled, the draft committee is in place for 2011, so it seems to be a bit late.


According to Mr. Frojdh, HEVC is interested in many industries because it can maintain the same video quality as before even if the bit rate is reduced to half. This also leads to reducing the bandwidth used by half, so mobile phone companies that are originally limited in bandwidth can also offer more video services.

"The video occupies the majority of the data sent to the network, and the proportion is increasing rapidly, and in 2015 it is predicted that video will occupy 90% of all network traffic," Frojdh. The first edition of HEVC is expected to be approved by January 2013, but it showed that it may be introduced to products early in 2013.

By the way, 2 chan 's "[2013] H.265 / HEVC [7680 × 4320]"Thread, images that compare MPEG-4 AVC (H.264) and HEVC at the same bit rate and almost the same image quality are posted.

The image is HEVC 800 kbps in the upper left, AVC 800 kbps in the upper right, AVC 1500 kbps in the lower left and lossless in the lower right.


Another cut


Certainly, HEVC looks more beautiful at the same bit rate, but it seems quite delicate when dropping the bit rate to about half.