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MPEG-4 encoder settings 293
In case of interlaced streams, the half-image sequence is set. Read more about this
explanation regarding "
Interlace (view page 304)".
Pulldown
Note: This parameter is only available if the setting "Frame" or "MBAFF" (only for
AVC/H.264)" is selected for "Picture type".
In normal cases, an image playback rate of 24 (or 23.976) frames per second is use; the
NTSC system however requires 30 (or 29.97) frames/s, and there is a special algorithm for
converting the video's frame rate. For compilations or test purposes, switch this option to
"No". In normal cases, the setting can be set to "Auto".
Slice count
A frame can be divided into multiple slices for encoding. Specify the maximum number of
itted. If set to "0", then the number will be determined automatically.
.
Mode
•
Constant bit rate: The constant bit rate should only be used if the device used to play
the video supports constant bit rates.
• Constant quantizer:
•
Variable bit rate: The bit rate varies. For faster movements in the video, the bit rate
or still images or slow pans, a lower bit rate is sufficient for creating the
t quality
encoding is carried out at the same time as the analysis for
s calculated and updated. This produces the best results, but the
• In "Constant bit rate" mode: Exactly those values entered are applied to be able to
e size of the video to be exported can only be approximated.
HSS rate
This is the maximum bit rate that should be present in the video stream, i.e. maximum
number of bits that may be transferred to the decoder.
slices are perm
Bit rate control
The bit rate indicates how much data per second is saved in the video (playback speed).
This makes the bit rate the deciding parameter for the video to be encoded
increases, and f
video in constan
.
Pass
• Single pass: The encoder process takes place without prior analysis. This requires the
least amount of time, however quality suffers.
•
Multi-pass analysis: The first encoding is carried out at the same time as the analysis
for the second encoding is calculated.
• Multi-pass encode: The first
the second encoding i
process requires the most time.
Bit rate (Bits/s)
calculate the size of the video precisely.
• In "
Variable bit rate" mode: The values entered here are applied to the video as an
average as a guideline. Th
Note: This option is only available in "Variable bit rate" mode.