Convert MTV to AWB

AMR MP3 Converter converts MTV files to AWB format. The software is an all in one audio converter that supports more than 90 audio and video files as input, and converts to popular formats such as MP3, WAV, AAC, M4A, OGG, WMA, and AWB.

AMR MP3 Converter also supports batch conversion, and is full compatible with Vista and Windows 7.

1. Free Download AMR MP3 Converter here and then install the software by instructions
2. Launch AMR MP3 Converter
3. Choose MTV Files
   
   Click "Add Files" to choose MTV files and then add them to conversion list.
   
   
   Choose one or more MTV files you want to convert and then click Open.
   
   
4. Choose "to AWB"
   
   
   
5. Convert MTV to AWB
   
   Click button "Convert" to convert all MTV files to AWB format.
   
   
   The software is converting MTV files to AWB format.
   
   
6. Play & Browse
   
   When conversion completes, you could right-click converted item and choose "Play Destination" to play the destination file; or choose "Browse Destination Folder" to open Windows Explorer to browse the destination file.

Free Download AMR MP3 Converter

What is MTV?
MTV is file format supposedly created to allow video playback capabilities on inexpensive Chinese-made portable MP4 players without increasing the cost of those players with the license royalties (and more processor power). These Chinese MP4/MTV Player (sold as "MP4 Player" or "PMP", for Personal Media Player) are flash-based digital audio players, mostly manufactured in China and capable of displaying images, videos, and text files. Although commonly called MP4 players, are unable to play true MP4 (MPEG-4 AVC H.264) formated videos and are limited to proprietary formats such as this one and AMV.

The format operates by displaying a series of raw uncompressed rgb565/555 image frames while playing MP3 audio but as the files are of low resolution and frame rate, sizes are comparable to MPEG-1 or MPEG-2. (in a bytes-per-minute sense). Encoding and decoding are less processor-intensive than other contemporary formats, as in fact very little "encoding" is actually done.

The MTV format consists of a 512 byte file header, followed by alternating audio and image blocks. Audio frame data is not necessarily aligned on block boundaries and each one of them has from 1 to n subblocks of 512 bytes each with 'n' remaining constant through the entire file/stream. The first 12 bytes of each audio subblock is padding data and is always set to 0. Image data, on the other hand, is perfectly contained in each image data block, each one representing an entire frame.

During decoding of the video stream, the audio frames are passed to the MP3 hardware decoder, while the memory pointer of the display hardware is simply adjusted to the next raw image within the video stream. While this concept does not require additional * hardware for the decoding process, it leads to huge memory requirements as no compression is applied to the image frame data.

What is AWB?
Adaptive Multi-Rate Wideband (AMR-WB) is a patented speech coding standard developed based on Adaptive Multi-Rate encoding, using similar methodology as Algebraic Code Excited Linear Prediction (ACELP). AMR-WB provides excellent speech quality due to a wider speech bandwidth of 50-7000 Hz compared to narrowband speech coders which in general are optimized for POTS wireline quality of 300-3400 Hz.

AMR-WB is codified as G.722.2, an ITU-T standard speech codec, formally known as Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB). G.722.2 AMR-WB is the same codec as the 3GPP AMR-WB. The corresponding 3GPP specifications are TS 26.190 for the speech codec and TS 26.194 for the Voice Activity Detector.

A common file extension for AMR-WB file format is .awb. There also exists another storage format for AMR-WB that is suitable for applications with more advanced demands on the storage format, like random access or synchronization with video. This format is the 3GPP-specified 3GP container format based on ISO base media file format. 3GP also allows use of AMR-WB bit streams for stereo sound.

The AMR-WB bitrates are 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05 and 23.85 kbps. Compared to narrowband speech codecs (like AMR) optimized for traditional telephone voice quality of 300-3400 Hz, the AMR-WB codec's wider bandwidth of 50-7000 Hz provides excellent speech quality.

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