 |
Convert M2V to AMR
|
Total Audio MP3 Converter converts M2V 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 M2V Files
Click "Add Files" to choose M2V files and then add them to conversion
list.
Choose one or more M2V files you want to convert and then click Open.
- Choose "to AMR"
- Convert M2V to AMR
Click button "Convert" to convert all M2V files to AMR format.
The software is converting M2V 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 M2V?
M2V is an MPEG-2 Packetized Elementary Stream. It contains only video related
data.
MPEG-2 video stream files are normally destined to be multiplexed (muxed),
which is the process of adding audio data and perhaps other streams such as subtitles,
before use. MPEG-2 stream files are created by demultiplexing (demuxing) an existing
MPEG-2, or by converting another video format to MPEG-2.
The file extension M2V is used for:
- SFV Host Files that contain only the video stream
- Files that contain both MPEG-2 video and audio streams, a use that may surprise
those who expect only a video stream
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 M2V to AMR Related Topics:
DV to AMR,
SDP to AMR,
MPGA to AMR,
GXF to AMR,
DIVX to AMR,
WM to AMR,
NUT to AMR,
FLIC to AMR,
CDA to AMR,
ALAC to AMR,
AMR to M4A,
CAF to AMR,
MO3 to AMR,
SOL to AMR,
AU to AMR,
SWF to AMR,
M1A to AMR,
VQF to AMR,
MKA to AMR,
MVI to AMR,
XVID to AMR,
MPC to AMR,
ALAW to AMR,
MPE to AMR,
VCD to AMR,
NSV to AMR,
4XM to AMR,
OMA to AMR,
FLAC to AMR,
AC3 to AMR,
MTS to AMR,
OGM to AMR,
DIF to AMR,
AMR to AWB,
3G2 to AMR,
SPX to AMR,
HDTV to AMR,
F4V to AMR,
PSX to AMR,
DAT to AMR
|
