High quality images: H.264 can provide continuous and smooth high-quality images (DVD quality).ģ. Low Bit Rate: compared with MPEG2 and MPEG4 ASP compression technologies, under the same image quality, the amount of data compressed by H.264 technology is only 1 / 8 of MPEG2 and 1 / 3 of MPEG4.Ģ.

There are also Instantaneous Decoding Refresh (IDR), Hypothetical Reference Decoder (HRD), and Hypothetical Stream Scheduler (HSS).ġ. The main parts of H264 standard include Access Unit delimiter, SEI, primary coded picture and Redundant Coded Picture. This standard is usually called H.264/AVC (or AVC/H.264 or H.264/MPEG-4 AVC or MPEG-4/H.264 AVC) and clearly describes its developers in both aspects. 264, also the tenth part of MPEG-4, is a highly compressed digital video codec standard proposed by the Joint Video Team (JVT, Joint Video Team) jointly composed of ITU-T video coding expert group (VCEG) and ISO/IEC dynamic image expert group (MPEG). FFmpeg decoding H264 is mainly divided into three steps: one is to obtain the decoder, the other is to send H264 NALU to the decoder, and the third is to obtain the decoded YUV and other data from the decoder.

Ffmpeg h264 example