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Convert MVI to AMR
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Total Audio MP3 Converter converts MVI files to AMR 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 AMR.
Total Audio MP3 Converter also supports batch conversion, and is full compatible
with Vista and Windows
7.
- Free Download
Total Audio MP3 Converter here and then install the software
by instructions
- Launch Total Audio MP3 Converter
- Choose MVI Files
Click "Add Files" to choose MVI files and then add them to conversion
list.
Choose one or more MVI files you want to convert and then click Open.
- Choose "to AMR"
- Convert MVI to AMR
Click button "Convert" to convert all MVI files to AMR format.
The software is converting MVI files to AMR format.
- 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.
Top
What is MVI?
Motion Pixels version 1 (MVI1) was used in a single PC game, Treasure Quest
while version 2 (MVI2) was used in a number of Movie CDs. All of these items were
published by Sirius Publishing and the Motion Pixels codec is believed to still
be owned by the company's CEO, Richard Gnant.
MVI belongs to the "old-school" family of video codecs and relies
on interframe differences and adaptive delta-coding for horizontal lines of the
picture. Delta coefficients are additionally Huffman-packed. For better compression
at the cost of picture quality additional colorspace downsampling may be used.
MVI2 adds smoother delta-coding and the ability to dynamically change downsampling
for each frame.
Compressed MVI1 video may be carried in the custom MVI Container format.
What is AMR?
Adaptive Multi-Rate (AMR) is an audio data compression scheme optimized for speech
coding. AMR was adopted as the standard speech codec by 3GPP in October 1998 and
is now widely used in GSM and UMTS. It uses link adaptation to select from one
of eight different bit rates based on link conditions. AMR is also a file format
for storing spoken audio using the AMR codec. Many modern mobile telephone handsets
will allow you to store short recordings in the AMR format. There also exists
another storage format for AMR 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.
Key Features:
- Sampling frequency 8 kHz/13-bit (160 samples for 20 ms frames), filtered to
200-3400 Hz.
- The AMR codec uses eight source codecs with bit-rates of 12.2, 10.2, 7.95,
7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s.
- Generates frame length of 95, 103, 118, 134, 148, 159, 204, or 244 bits for
bit rates 4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.2, or 12.2 kbit/s, respectively
- AMR utilizes Discontinuous Transmission (DTX), with Voice Activity Detection
(VAD) and Comfort Noise Generation (CNG) to reduce bandwidth usage during silence
periods
- Algorithmic delay is 20 ms per frame. For bit-rates of 12.2, there is no 'algorithm'
look-ahead delay. For other rates, look-ahead delay is 5 ms. Note that there is
5 ms 'dummy' look-ahead delay, to allow seamless frame-wise mode switching with
the rest of rates.
- AMR is a hybrid speech coder which uses Algebraic Code Excited Linear Prediction
(ACELP)
- The complexity of the algorithm is rated at 5, using a relative scale where
G.711 is 1 and G.729a is 15.
- PSQM testing under ideal conditions yields Mean Opinion Scores of 4.14 for
AMR (12.2 kbit/s), compared to 4.45 for G.711 (u-law)
- PSQM testing under network stress yields Mean Opinion Scores of 3.79 for AMR
(12.2 kbit/s), compared to 4.13 for G.711 (u-law)
Convert MVI to AMR Related Topics:
OGX to AMR,
MP2 to AMR,
MPG to AMR,
OMA to AMR,
AMR to M4A,
MO3 to AMR,
F4A to AMR,
HDTV to AMR,
SPX to AMR,
AMV to AMR,
CAF to AMR,
AMR to OGG,
GXF to AMR,
RPL to AMR,
MOD to AMR,
VQF to AMR,
WM to AMR,
DXA to AMR,
AMR to AAC,
WV to AMR,
NUV to AMR,
MPE to AMR,
FLIC to AMR,
MMF to AMR,
XVID to AMR,
3G2 to AMR,
3GP to AMR,
DTS to AMR,
MVI to AMR,
DIF to AMR,
M1A to AMR,
DVR-MS to AMR,
DV to AMR,
M4A to AMR,
VCD to AMR,
MLP to AMR,
TTA to AMR,
VMD to AMR,
NUT to AMR,
SWF to AMR
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