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Kdenlive/Manual/Projektmenuen/Rendering/Renderingsprofilens parametre

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Revision as of 07:38, 24 November 2012 by Claus chr (talk | contribs) (Importing a new version from external source)

Renderingsprofil-prametre - Hvordan man læser dem

De parametre, som bruges i renderingsprofiler kommer fra programmet ffmpeg.

Dette er et gennemarbejdet eksempel som viser, hvordan du kan forstå hvad disse parametre betyder ved hjælp af ffmpegs dokumentation.

In the example above the parameters are:

f=dvd 
vcodec=mpeg2video 
acodec=mp2  
b=5000k 
maxrate=8000k 
minrate=0 
bufsize=1835008 
mux_packet_s=2048 
mux_rate=10080000 
ab=192k 
ar=48000 
s=720x576 
g=15 
me_range=63 
trellis=1 
profile=dv_pal_wide 
pass=2

Looking up the ffmpeg help translates these parameters as:

a main option is

-f fmt              force format

video options are

-vcodec codec     force video codec ('copy' to copy stream)
-pass n                select the pass number (1 or 2)
-b bitrate             set bitrate (in bits/s)
-vb bitrate           set bitrate (in bits/s)
-s size                 set frame size (WxH or abbreviation)
-me_range          <int>   E.V.. limit motion vectors range (1023 for DivX player)
-trellis                  <int>   E.VA. rate-distortion optimal quantization

audio options are

-acodec codec      force audio codec ('copy' to copy stream)
-ab bitrate             set bitrate (in bits/s)
-ar rate                  set audio sampling rate (in Hz)

The AVCodecContext AVOptions include:

-b                 <int>   E.V.. set bitrate (in bits/s)
-maxrate      <int>   E.V.. set max video bitrate tolerance (in bits/s)
-minrate       <int>   E.V.. set min video bitrate tolerance (in bits/s)
-g                 <int>   E.V.. set the group of picture size

So all the render profile options are documented here in the ffmpeg documentation.