Grass-valley ProCoder 3 Bedienungsanleitung Seite 168

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ProCoder 3
Max. Bitrate (kbps)
Set the maximum bitrate for the stream in kilobits per second. Higher bitrates provide
better quality but create larger files. This option is only available if VBR encoding is
selected.
Profile-Video
Max. Frame Rate (fps)
Specify the maximum frame rate for the output. The encoder will attempt to maintain
this frame rate, but the rate may be reduced when scenes are complex.
VBR Encoding
Select the encoding type here. VBR encoding methods cannot be used if more than
one profile is enabled.
CBR Selects constant bitrate encoding. The bitrate will correspond to the
Avg. Bitrate setting.
VBR Average Bit Rate Selects varible bitrate encoding maintaining the
average bit rate. The video quality may vary as the encoding rate
varies, but the average bit rate will correspond to the Avg. Bitrate
setting.
VBR Video Quality Selects variable bitrate encoding maintaining the
video quality. The average bit rate is ignored but the encoding rate
will not exceed the Max. Bitrate setting.
VBR Quality
The VBR Quality setting determines the quality of video when the VBR Encoding type
is set to VBR Video Quality mode. Higher values specify better video quality. A value
of 100 will attempt to achieve a near-perfect reproduction of the source. The specified
quality level may not be achieved depending on the specified frame size and frame
rate.
Use Loss Protection
Enable this option to use Loss Protection. Loss Protection provides better video
quality for less-reliable connections but sacrifices effective bandwidth.
Seconds / Keyframe
Specifies the keyframe interval in terms of the number of seconds per keyframe. For
example, if set to 10, a 30-second source will have 3 keyframes. More keyframes
generally results in better video quality but creates larger files.
Startup Latency (sec)
Sets the amount of time allowed before playback must start. A larger latency
increases picture quality but takes more time to start playback.
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