Fraunhofer- Gesellschaft (A German research institute)
Overview
It is a digital Audio which compresses the tracks using the lossy format. Although, it follows the lossy format, yet, there will be no noticeable change in the quality of audio. It only discards the superfluous information that a human ear is inefficient to process or hear. With the help of the this extension, one can upload and download audio files with ease, irrespective of the internet connection speed even a dial-up connection users can access these files. There are a number of MP3 Blogs(music blogs) available on the internet where maker uploads music files and a user can download the same without any trouble. These blogs help people to get an insight into the music world. Hype Machine is an example of an audio blog.
Technical description
MP3 uses lossy data compression, which means when data is encoded it is not the full original version, it’s a substitute to original copy but in a smaller size. This compression can lead to a decrease in file size, ranging from 75% to 95%. This format is based on perceptual coding due to which this extension screens out the noise, and results in an audio file that uses a low bit rate(lowest bit rate in it is 128kbps). It provides audio of fair sound quality. As it is only an audio file, thereby, if there are any images linked to it then they need to be stored in a separate file.
An MOV file format is a multimedia container which is used to store videos, text, images, subtitles and audios. Although, it was developed by Apple, yet, it can be used by both platforms i.e. Mac/Macintosh and Windows. Softwares that are meant for video editing especially use this format. To compress files, it uses MPEG-4 Codec. It should be noted that there is great similarity between MOV and MP4 files and they both support Apple’s QuickTime Player. But MP4 is based on international standards that is the main reason it is supported broadly. Additionally, it has the potential to abstract data references for the multimedia data. Also, it separates the media data from its offsets.
Technical description
MOV is extremely suitable for editing as there is no need to re-write data because it has the ability to import and edit in place. There are different media tracks in which data can code using distinct codecs. The data structure in tracks follow the hierarchy and they consist of atoms. An atom can either represent itself as a parent to other atoms or can have media or can edit the data. The older version of QuickTime supported only viewing of these files but the latest versions like QuickTime Pro both support editing and exporting that can be easily done by the user. ‘Passthrough’ option in this software allows clean exporting of audio and video streams to MP4. This form is an extended form of MPEG-4 PART-12.
