To generate
an AVI (*.avi) file, it is necessary to set the output format properly.
For that open
the "Profile Settings" dialog window (or make use of the "Properties"
window). In the Main section select "AVI, Audio Video Interleaved"
from the "Output
Format" list:
Video encoding parameters.
Go to the Video
section. The following parameters are available here:
Codec - the codec that will be used
for compression of the video stream. This list includes all codecs installed
on your computer that support Direct Show interface. These codecs are
not delivered along with Watermark Master, and we are not responsible
for the quality of their work.
If "Uncompressed (RGB)" item is
selected from the list, the video stream will not be encoded, but kept
uncompressed.
Some codecs may have extra (their own) options.
To access them, click "..." button on the right of the selected
codec. Some of these options may require to be set again every time you
load the config file since they cannot be saved.
Depending on the selected codec, the following
parameters may be available:
Number
of passes - the number of passes used for the encoding of the video
stream. Some codecs allow using two-pass encoding that can result in better
quality of the produced file. However, two-pass encoding takes longer
because the codec goes through the video stream twice.
Key
Frame Rate - the rate with which key frames are created. The higher
its value, the larger the produced file size. However, a too small value
may result in quality loss and difficult navigation through the produced
file.
Quality
- the constant video quality. The higher its value, the larger the produced
file size. This parameter may take values from 0 (the worst quality) to
100 (the best quality).
Bitrate
- the number of bits used for representation of one second of the encoded
video stream. The higher its value, the larger the produced file size
and the higher the produced file quality. We guess the optimal value can
be found in an experimental way only. However, it is necessary to remember
that the ratio between the produced file size and quality also depends
on the selected frame
rate and frame size.
Audio encoding
parameters.
Go to the Audio
section. The following parameters are available here:
Codec - the codec that will be used
for compression of the audio stream. This list includes all codecs installed
on your computer that support Direct Show interface. These codecs are
not delivered along with Watermark Master, and we are not responsible
for the quality of their work.
If "No Compression"
item is selected from the list, the audio stream will not be encoded,
but kept uncompressed. In this case the following parameters become available:
Sampling
Rate - the number of samples used for representation of one
second of the audio stream. This parameter can take one of the following
values:
Keep original sampling
rate - if selected, the source file's sampling rate value will be used.
48000 Hz.
44100 Hz
32000 Hz
24000 Hz
22050 Hz
11025 Hz
8000 Hz
Channel
- the number of channels in the audio stream. This
parameter can take one of the following values:
Keep original channel
mode - if selected, the source file's channel mode will be used.
Stereo - 2 channels.
Mono - 1 channel.
Precision
- the number of bits used for representation of one sample of the audio
stream. This parameter can
take one of the following values:
Keep original precision
- if selected, the source file's precision value will be used.
16 bits.
8 bits.
If any other
item but "No Compression" is
selected from the list, the following parameter becomes available:
Audio
Format - the audio format supported by the selected audio codec.
