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Convert MKV to AMR
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Total Audio MP3 Converter converts MKV 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 MKV Files
Click "Add Files" to choose MKV files and then add them to conversion
list.
Choose one or more MKV files you want to convert and then click Open.
- Choose "to AMR"
- Convert MKV to AMR
Click button "Convert" to convert all MKV files to AMR format.
The software is converting MKV 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 MKV?
The Matroska Multimedia Container is an open standard free container format, a
file format that can hold an unlimited number of video, audio, picture or subtitle
tracks inside a single file. It is intended to serve as a universal format for
storing common multimedia content, like movies or TV shows. Matroska is similar
in conception to other containers like AVI, MP4 or ASF, but is entirely open in
specification, with implementations consisting mostly of open source software.
Matroska file types are .MKV for video (with subtitles and audio).
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 MKV to AMR Related Topics:
FLIC to AMR,
AMV to AMR,
CAF to AMR,
OGG to AMR,
MKV to AMR,
VCD to AMR,
F4A to AMR,
M2A to AMR,
ADX to AMR,
AVI to AMR,
AU to AMR,
WAVE64 to AMR,
NSV to AMR,
MTM to AMR,
MVI to AMR,
ALAW to AMR,
3G2 to AMR,
S3M to AMR,
DIVX to AMR,
MOD to AMR,
RPL to AMR,
AMR to M4A,
ULAW to AMR,
OGM to AMR,
WMV to AMR,
MLP to AMR,
XM to AMR,
M4B to AMR,
ALAC to AMR,
WM to AMR,
WAV to AMR,
TTA to AMR,
XVID to AMR,
3GPP to AMR,
VMD to AMR,
NUT to AMR,
OGX to AMR,
VQF to AMR,
MP1 to AMR,
GXF to AMR
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