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Convert AVI to AMR
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Total Audio MP3 Converter converts AVI 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 AVI Files
Click "Add Files" to choose AVI files and then add them to conversion
list.
Choose one or more AVI files you want to convert and then click Open.
- Choose "to AMR"
- Convert AVI to AMR
Click button "Convert" to convert all AVI files to AMR format.
The software is converting AVI 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 AVI?
Audio Video Interleave, known by its acronym AVI, is a multimedia container format
introduced by Microsoft in November 1992 as part of its Video for Windows technology.
AVI files can contain both audio and video data in a file container that allows
synchronous audio-with-video playback. Like the DVD video format, AVI files support
multiple streaming audio and video, although these features are seldom used. Most
AVI files also use the file format extensions developed by the Matrox OpenDML
group in February 1996. These files are supported by Microsoft, and are unofficially
called "AVI 2.0".
There is slight overhead when used with popular MPEG-4 codecs (Xvid and DivX,
for example), increasing file size more than necessary. The AVI container has
no native support for modern MPEG-4 features like B-Frames. Hacks are sometimes
used to enable modern MPEG-4 features and subtitles, however, this is the source
of playback incompatibilities.
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 AVI to AMR Related Topics:
OMA to AMR,
3G2 to AMR,
OGV to AMR,
XVID to AMR,
VID to AMR,
WMA to AMR,
MP1 to AMR,
SHN to AMR,
AC3 to AMR,
DVR-MS to AMR,
MPE to AMR,
VMD to AMR,
MKV to AMR,
CAF to AMR,
F4B to AMR,
AIFF to AMR,
MVI to AMR,
DIVX to AMR,
OGA to AMR,
WAVE64 to AMR,
MPGA to AMR,
ASF to AMR,
SPX to AMR,
AU to AMR,
NSV to AMR,
WMV to AMR,
GSM to AMR,
STR to AMR,
SWF to AMR,
MOD to AMR,
DVD to AMR,
MMF to AMR,
WMD to AMR,
WM to AMR,
MLP to AMR,
WAV to AMR,
FLIC to AMR,
M4B to AMR,
DAT to AMR,
SOL to AMR
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