MOV to M4R
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| File extension | .m4r |
|---|---|
| File category | Audio |
| Stands for | MPEG-4 PART 14 for iPhone ringtones |
| Developer | Apple Inc. |
| Overview | M4R is one of the extensions of MPEG-4 Part-14 and it is specially designed by Apple for iPhone ringtones. It is just the relabelling of AAC and M4A. This extension provides an excellent quality of ringtones for iPhones and the size of the ringtone is also small. There are certain steps that one needs to follow for the conversion of any song into this format (iPhone ringtone). Firstly, select any song of 30 seconds and covert it to AAC format using iTunes. Then rename this file using .m4r extension. Finally, by using the iTunes transfer your ringtone file to iPhone. This can be done by connecting your iPhone to the computer and syncing the playlist. Now a user can easily use this ringtone for phone ring, alerts, alarms etc. It should be noted that these files will be supported only by the latest version. Hence, use the current version of iTunes. |
| Technical description | It uses a lossy compression algorithm to encode the ringtones that is same as AAC and MP3 eareensions. But it has the additional feature of auditory masking which means it neglects other sounds which can be detected or recognized while listening or hearing another sound. It only discards the information which is surplus for the human ear. This results in good quality of iPhone ringtones. It takes less storage space without affecting the quality of audio. It is also a segment of MPEG-4 standard and this is stated in the ISO-IEC standard 14495-3. |
| Links | wikipedia.org (opens in new tab - official documentation) |
| File extension | .mov |
|---|---|
| File category | Video |
| Stands for | MPEG-4 Part-12 |
| Developer | Apple |
| Overview | 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. |
| Links | wikipedia.org (opens in new tab - official documentation) |
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