Archive:Kdenlive/Manual/Project Menu/Render/Render Profile Parameters: Difference between revisions
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== Render Profile Parameters - How to read them == | == Render Profile Parameters - How to read them == <!--T:1--> | ||
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[[File:Custom render profiles.png|300px]] | [[File:Custom render profiles.png|300px]] | ||
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The parameters that go into a render profile derive from the '''ffmpeg''' program. | The parameters that go into a render profile derive from the '''ffmpeg''' program. | ||
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This is a worked example to show how you can understand what these parameters mean using the '''ffmpeg''' documentation. | This is a worked example to show how you can understand what these parameters mean using the '''ffmpeg''' documentation. | ||
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In the example above the parameters are: | In the example above the parameters are: | ||
f=dvd | <!--T:6--> | ||
f=dvd | |||
vcodec=mpeg2video | vcodec=mpeg2video | ||
acodec=mp2 | acodec=mp2 | ||
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pass=2 | pass=2 | ||
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Looking up the [http://linux.die.net/man/1/ffmpeg ffmpeg help] translates these parameters as: | Looking up the [http://linux.die.net/man/1/ffmpeg ffmpeg help] translates these parameters as: | ||
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a main option is | a main option is | ||
-f fmt force format | -f fmt force format | ||
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video options are | video options are | ||
-vcodec codec force video codec ('copy' to copy stream) | -vcodec codec force video codec ('copy' to copy stream) | ||
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-trellis <int> E.VA. rate-distortion optimal quantization | -trellis <int> E.VA. rate-distortion optimal quantization | ||
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audio options are | audio options are | ||
-acodec codec force audio codec ('copy' to copy stream) | -acodec codec force audio codec ('copy' to copy stream) | ||
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-ar rate set audio sampling rate (in Hz) | -ar rate set audio sampling rate (in Hz) | ||
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The AVCodecContext AVOptions include: | The AVCodecContext AVOptions include: | ||
-b <int> E.V.. set bitrate (in bits/s) | -b <int> E.V.. set bitrate (in bits/s) | ||
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-g <int> E.V.. set the group of picture size | -g <int> E.V.. set the group of picture size | ||
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So all the render profile options are documented here in the '''ffmpeg''' documentation. | So all the render profile options are documented here in the '''ffmpeg''' documentation. | ||
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| prevpage=Special:MyLanguage/Kdenlive/Manual/Rendering | nextpage=Special:MyLanguage/Kdenlive/Manual/Capturing | | prevpage=Special:MyLanguage/Kdenlive/Manual/Rendering | nextpage=Special:MyLanguage/Kdenlive/Manual/Capturing | ||
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[[Category:Kdenlive]] | [[Category:Kdenlive]] | ||
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Revision as of 12:27, 7 November 2012
Render Profile Parameters - How to read them
The parameters that go into a render profile derive from the ffmpeg program.
This is a worked example to show how you can understand what these parameters mean using the ffmpeg documentation.
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.