AVI is Audio Video Interleave. Itís a
media format that combines audio and video synchronously.
With high quality of image and availability on multiple
platforms, it is mainly applied to Multimedia CDs to
save every sorts of imaging information on TV, Movie, etc.
To synchronize/sync avi, you may
first install the proper avi codecs in your system. The
video and audio stream in the avi container can be encoded
by any codecs. So you have to try different decoders until
you can preview the avi in Windows Media Player.
Audio Video Synchronizer which can synchronize
audio/video of an avi file.
Click the Options button, select Output
Format as AVI in the following dialog box.
1. Before you launch the
program, recommend to install the DivX
codec. Select the Video compressor with DivX Codec.
2. The default Resolution
is original size of the clip. If you want to change the
resolution the clip, you can choose other resolution or
3. Resize mode:
ratio: The video is resized to fit the target frame
along one dimension, while preserving the aspect ratio.
If the ratio of width to height in the image does not
match the ratio in the target frame, it creates a
Stretch: The video is
stretched to fit the target frame size in both
dimensions, without preserving the aspect ratio.
If you want to adjust
the aspect ratio of the output clip, please choose the
Stretch mode and change a new resolution.
4. Most audio compressors
may not work well. Even they make the program crash. The
program sets Microsoft ADPCM as the default audio
5. Some video compressors
have not the settings dialog box.
6. If you want to change
the size of output file, Please set the Encoding Bitrate
in the DivX properties dialog box. The Encoding bitrate
is bigger, the picture is clearer, but the output file
1. If you have installed
DivX codec 6.x, the default maximum resolutions of the
DivX are up to 720*480 at 30 fps or 720*576 at 25fps. If
you want to get the higher resolution of the output
video, it is needed to change the Certification
- 720HD Profile: up
to1280*720 at 30 fps.
- 1080HD Profile: up
to1920*1080 at 30 fps or 1280*720 at 60 fps
- Unconstrained: the
video you are encoding may not be playable in DivX
Certified consumer electronics devices.
2. If you want to view
the converted avi file on the DVD/DIVX player or
portable devices which supports DivX, you may select the
resolution to Custom size in the output dialog box,
enter the proper width and height for the device, select
the DivX Certification profile as Mobile Profile or
qMobile Profile if necessary.
You also have to pay
attention to the audio stream in avi file which the
hardware player supports. If the operation system of the
portable media players or mobile devices are Windows CE
or Windows Mobile, they should support Microsoft ADPCM.
They all support MP3 stream normally. You may try MPEG
Layer-3 as Audio compressor in the program. But the MP3
encoder bundled in Windows was made in 1997, 56kbps, and
not stable. If your computer has installed Fraunhofer
Radium MP3 codec, the conversion will work perfectly.
But Fraunhofer does not retail the compressor.
3. Some unstable video or
audio compressors may produce another out of sync problem.
In this case please try to output wmv format first.
AVS is a coding method of a new
generation developed by China with the independent
intellectual property rights. Now China is working on the
development of AVS specifications. AVS standards mainly
includes 4 technical standards: system, video, audio and
digital rights management. And AVS video mainly focuses on
video compression applied to high definition television and
high-density optical storage media.
AVC is Advanced Video Coding.
H.264 is a kind of
high-performance video codec technology developed by JVT
(Joint Video Team) formed by both ITU-T and ISO. So itís not
only ITU-Tís H.264 but also ISO/IECís MPEG-4 AVC and which
nearly becomes Part 10 of the MPEG-4 standard. H.264ís
biggest advantage lies in high compression ratio which will
greatly help users save download time and data traffic
charges. H.264 compression ratio is twice higher than MPEG-2
while 1.5 ~ 2 times than MPEG-4 under the condition of the
same image quality. Besides, H.264 also provides
high-quality smooth image.
To synchronize/sync AVS or AVC/H.264, please install
FFDshow codec and