M4A to OGG
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| - Information about M4A |
| Id |
| 4 |
| File extension |
| m4a |
| File category |
| Audio |
| Stands for |
| MPEG-4 PART 14 or MPEG-4 Audio |
| Developer |
| Apple |
| Overview |
| It is an audio file which uses AAC (Advanced Audio Coding) compression. Also, it is one of the formats of MPEG-4. It should be noted that MPEG-4 codec is used both for video and Audio. But M4A is specially designed by Apple for audio files only that is why it is used to store audiobooks, podcasts and songs. As sound files are encoded using AAC compression and this results in a reduction of file size and it also produces a very good quality of audio. Whenever somebody purchases music from the iTunes store then it is always available in this format. Many believe that MP4 and M4A are similar extensions, however, it’s not the truth. MP4 files can store both Audio and video files whereas the other one is entirely made for Audio files. |
| Technical description |
| These files are improved version of MP3 as it has the ability to store data without any loss. The audio files are completely reversible that is they can be inverted to their original copies with the same size. Besides this, these files does not have copyright protection whereas MP4 files are protected and they use DRM(Digital Rights Management) technology to enforce this protection policy. Due to this, one can copy these audio files effortlessly. These files have come with advanced features which include smaller sample block sizes, perception-based compression and bigger block sizes in stationary signals. There are a number of applications that support this extension. For example:- Microsoft Windows Media Player, VLC Media Player, Quicktime player, Microsoft Zune and Apple iTunes etc. |
| Links |
| wikipedia.org |
| - Information about OGG |
| Id |
| 8 |
| File extension |
| ogg |
| File category |
| Audio |
| Stands for |
| Derived from the word Ogging. |
| Developer |
| Xiph.org Foundation |
| Overview |
| This extension is an open-source format which means that it can be used by users free of cost and anyone can implement it. The main function of this format is to compress the audio files. It is identical to MP3 file but there is one difference that can not be neglected. That is the sound quality which is better in OGG format. The same size of the file can provide users good quality of audio. It is an unpatented software which implies that no one has the copyright and there are no restrictions on its usage. Moreover, it can also support metadata which can help in storing the artist information and track data. Since 2007 this file is independently used by ‘Vorbis' audio files. |
| Technical description |
| The word OGG has been derived from the word ‘Ogging’ which is jargon or parlance(a technical slang) in a computer game named ‘Netrek'. This format is accessible in almost all the software of music players but there is one exception that is Apple. It allows various data streams to be entrenched or embedded in a solo file along with stream data as it has a container format. This codec has the capability of transferring and obtaining the independent signals over the same signal path by means of synchronized switches, which enables independent streaming of audio, video and text. Although, it is not a popular format as of MPEG standards, yet, it is beneficial for those who want to study and apply what is learned because of its free content. |
| Links |
| wikipedia.org |
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