Optimizing FLV conversion refers to the FLV file size
versus FLV video quality. For web playback users wont be able
to afford to huge sized files yet they have to ensure the
video quality at the same time.
A common question of most users is how much reduction the
file size will be when converted to FLV from other formats.
In case of MPEG (MPEG-1 or MPEG-2) and raw AVI the file size
reduces noticibly.
However in case of compressed formats like WMV, ASF, MOV or
divX, the file size does not reduce that much. In some rare
cases it is found that the file size to have increased than
the source. This happens due to the fact that these files
are already in a compressed format and the file size that
they have is already small. But yet a reduction can be achieved
by tweaking the encoding settings a bit.
For example if you want to convert a WMV that has a video
window of 640 X 480 to FLV format you should use a lower video
window size on the FLV converter like 400 X 300 or 320 X 240
(mostly used for website videos). This will reduce the file
size a bit. But do not expect a huge reduction because technically
that is not possible.
Remember you will get the best results if your source file
is MPEG or raw AVI.
Best Source Video Formats: MPEG1 (files that
have .mpg extention) and Raw AVI (files that have .avi extention).
Note that some AVI file are DIVx AVI files and they are already
compressed.
Raw AVIs are generated mainly by DVCams, Webcams etc.
Optimum Video Window Size: 400 X 300 or 320
X 240 (normal) and 400 X 225 or 320 X 180 (wide screen)
Optimum Video Bitrate: 225Kbps or 350Kbps
Optimum Audio Bitrate: 48Kbps @ 22,500 Hz
and Mono
If you are an expert you can always go for your own settings
but this is a quick reference for all our users who wonder
with the various settings of FLV Conversion.
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