![]() ![]() You can play MP4 on a number of players and devices MP4 can allow you to save a single movie file so you can access it easily MP4 supports Initial Object Descriptors and MPEG. It is part of ISO base media file format and is based on QuickTime File Format. It is a multimedia container that's able to store still images, subtitles, audio, video, and more data in just one file.īecause MP4 is able to reduce file sizes and hold a wide variety of data, it is ideal for both offline and online use. It is a very popular format and is commonly used in streaming videos online. MP4 player stands for Motion Pictures Expert Group -4 Part 14 format. It is difficult to save in one file because of the. For instance, an AVCHD file size of 100 MB is only 25 MB when saved in other types of formats With AC-3 Dolby Digital codec, it produces good quality audioĪVCHD file size is disproportionate. It is compatible with Blu-ray Disc formatĪVCHD can easily record 1920 by 1080 resolution at 16:9 aspect ratio, 60i, 50i footage AVCHD is compatible with Blu-ray, meaning you can burn its videos to DVDs and Blu-ray discs directly without having to convert them to other formats.ĪVCHD is able to record good quality live pictures This format has been improved to include stereoscopic video along with 50 and 60 frames per second mode of the 1080p. The AVCHD format can compress videos in small disc spaces while at the same time preserving the details and quality of the video. AVCHD uses MPEG-4 for videos and both linear PCM and Dolby Digital (Dolby AC-3) for audio. It is mainly used by camcorders to store videos. Which enable it to compress the frame more efficiently.The Advanced Video Coding High Definition (AVCHD) video format was invented by Panasonic and Sony in a bid to produce the best codec for recording videos. ![]() In other words we can say repeated information is captured once only and discarded for next frames which reduces the amount of data by maintaining the same quality.Īdvanced Video Coding algorithm uses 9 Intra-Prediction Direction means it gives potential reference to pixel blocks in 9 different directions. So it save lots of information which enable us to send this information in lower bitrate. This depends on the lady how long she is speaking sometimes this information is repeated in next 100 frames or can be more than it. While rest information it will copy into the next frames. So this encoding algorithm will capture only moving part of frames or moving information of next frame only. In the next frames its lips and body will move only while background is still the same. So suppose this professional lady is speaking something. But in capturing the video there will be more frames. In other words it is the comparison between two or more than two frames.Īs shown above in the figure we considered only one frame. When there are more than one frame is considered then Inter-Frame Compression take place. This is the working of Intra-frame compression. Thus our encoded data is saved which enable us to send this data at lower bitrate by maintaining same quality of data. By doing so we need not to capture the whole number of white MacroBlocks of background so lesser is the capturing information lower is the bitrate of data. So at the time of AVC encoding instead of capturing the whole white MacroBlocks in background, it capture only one white MacroBlock and repeat it in whole background color. But you can see background color of this frame is white only from top to bottom of image. This frame is divided into MacroBlocks upto 16*16 pixels. As shown above in the figure of professional lady. In intra-frame compression AVC compression algorithm consider only one frame. This is the property of Advance Video Coding algorithm. But the maximum size of one MacroBlock is 16*16 pixel. There are various size of MacroBlocks in this frame. These chunks are known as “ MacroBlocks“. Now this frame is divided by linings into small “ Chunks“. It is adopted in streaming media for example YouTube and Vimeo etc.Īs shown above in the figure there is a professional lady. ![]() Technical giants uses H.264 video codec today like Apple and Microsoft etc. It is adopted by small resolution devices like mobiles and tablets as well as with Standard Definition videos and High Definition Video content. H.264 is highly adopted for its better compression techniques that is why today its running in more than 1 billion devices. ![]()
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