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docs: Improved formatting on new quicksync page. and case fix on system requirements

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sr55 2016-11-16 21:50:57 +00:00
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source/docs/en/latest/technical/system-requirements.markdown
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@ -86,7 +86,7 @@ Several major versions are supported, see [Where to get HandBrake](../get-handbr
#### Other Linux
For any other distribution, you must [Compile from source](../developer/build-linux.html).
For any other distribution, you must [compile from source](../developer/build-linux.html).
<!-- /.system-lin -->

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source/docs/en/latest/technical/video-qsv-options.markdown
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@ -47,105 +47,103 @@ Available Options
--------------
- target-usage (or tu) <integer>
Sets the trade-off between quality and speed, from 1 (best quality) to 7 (best speed).
Default: 2
- Sets the trade-off between quality and speed, from 1 (best quality) to 7 (best speed).
- Default: 2
- num-ref-frame (or ref) <integer>
Number of reference frames, from 1 to 16.
0 means unspecified (set at runtime by the implementation).
Default: 0 (unspecified)
- Number of reference frames, from 1 to 16.
- 0 means unspecified (set at runtime by the implementation).
- Default: 0 (unspecified)
- gop-ref-dist <integer>
Distance between I or P reference frames, from 1 to 16.
-1 means automatic (4 in constant QP mode, 3 otherwise).
0 means unspecified (set at runtime by the implementation).
1 means B-frames will not be used.
Default: -1 (automatic)
Note: may be sanitized to a lower value in some cases to avoid hangs.
- Distance between I or P reference frames, from 1 to 16.
- -1 means automatic (4 in constant QP mode, 3 otherwise).
- 0 means unspecified (set at runtime by the implementation).
- 1 means B-frames will not be used.
- Default: -1 (automatic)
- Note: may be sanitized to a lower value in some cases to avoid hangs.
- gop-pic-size (or keyint) <integer>
Number of pictures within the current GOP (aka "keyframe interval").
-1 means automatic (32 in constant QP mode, 1 second long otherwise).
0 means unspecified (set at runtime by the implementation).
1 means only I-frames will be used.
2 means B-frames will not be used.
Default: -1 (automatic)
- Number of pictures within the current GOP (aka "keyframe interval").
- -1 means automatic (32 in constant QP mode, 1 second long otherwise).
- 0 means unspecified (set at runtime by the implementation).
- 1 means only I-frames will be used.
- 2 means B-frames will not be used.
- Default: -1 (automatic)
- cavlc <boolean>
Use CAVLC instead of CABAC entropy coding. Reduces compression efficiency.
It may improve encoding performance slightly, especially on older hardware.
Note: you can also use ''cabac'' (same as ''cavlc'' with reversed meaning).
Default: 0 (CAVLC off, CABAC on)
- Use CAVLC instead of CABAC entropy coding. Reduces compression efficiency.
- It may improve encoding performance slightly, especially on older hardware.
- Note: you can also use ''cabac'' (same as ''cavlc'' with reversed meaning).
- Default: 0 (CAVLC off, CABAC on)
- b-pyramid <integer>
Enables or disables "Pyramidal B-frames" which can improve compression efficiency.
It may be incompatible with some playback devices (such as the first generation AppleTV).
Note that this options modifies other parameters (gop-ref-dist, num-ref-frame, gop-pic-size).
-1 means automatic (on in constant QP mode, off otherwise).
0 means off (disabled).
1 means on (enabled).
Default: -1 (automatic)
Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.6 of the Media SDK API.
- Enables or disables "Pyramidal B-frames" which can improve compression efficiency.
- It may be incompatible with some playback devices (such as the first generation AppleTV).
- Note that this options modifies other parameters (gop-ref-dist, num-ref-frame, gop-pic-size).
- -1 means automatic (on in constant QP mode, off otherwise).
- 0 means off (disabled).
- 1 means on (enabled).
- Default: -1 (automatic)
- Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.6 of the Media SDK API.
- mbbrc <boolean>
Enables macroblock-level bitrate control that generally improves subjective visual quality.
It may have a negative impact on performance and objective visual quality metrics.
Default: 1 (on)
Note: not compatible with Constant QP or !LookAhead rate control methods (ignored).
Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.6 of the Media SDK API.
- Enables macroblock-level bitrate control that generally improves subjective visual quality.
- It may have a negative impact on performance and objective visual quality metrics.
- Default: 1 (on)
- Note: not compatible with Constant QP or !LookAhead rate control methods (ignored).
- Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.6 of the Media SDK API.
- extbrc <boolean>
Use extended bitrate control algorithms.
It generally improves objective visual quality metrics and subjective visual quality,
but can also lead to violation of HRD conformance and may significantly reduce performance.
Default: 0 (off)
Note: not compatible with Constant QP or !LookAhead rate control methods (ignored).
Caveats: requires driver support for version 1.6 of the Media SDK API.
- Use extended bitrate control algorithms.
- It generally improves objective visual quality metrics and subjective visual quality,
- but can also lead to violation of HRD conformance and may significantly reduce performance.
- Default: 0 (off)
- Note: not compatible with Constant QP or !LookAhead rate control methods (ignored).
- Caveats: requires driver support for version 1.6 of the Media SDK API.
- trellis <integer>
Enables trellis quantization.
0 means trellis is disabled.
1 means trellis is enabled for I-frames only.
2 means trellis is enabled for I and P-frames.
3 means trellis is enabled for all frames (I, P and B).
Default: 0 (disabled)
Note: ignored if the target-usage is too low (usually, only works in combination with tu=1).
Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 of the Media SDK API.
- Enables trellis quantization.
- 0 means trellis is disabled.
- 1 means trellis is enabled for I-frames only.
- 2 means trellis is enabled for I and P-frames.
- 3 means trellis is enabled for all frames (I, P and B).
- Default: 0 (disabled)
- Note: ignored if the target-usage is too low (usually, only works in combination with tu=1).
- Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 of the Media SDK API.
- lookahead (or la) <boolean>
Use the !LookAhead (LA or LA_ICQ) bitrate control algorithm.
Default: 1 (on)
Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 (1.8 for LA_ICQ) of the Media SDK API.
- Use the !LookAhead (LA or LA_ICQ) bitrate control algorithm.
- Default: 1 (on)
- Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 (1.8 for LA_ICQ) of the Media SDK API.
- lookahead-depth (or la-depth) <integer>
If !LookAhead bitrate control is enabled, number of frames that are analyzed before encoding, from 11 to 60.
Default: 40
Note: may be sanitized to a lower value in some cases to avoid hangs.
Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 of the Media SDK API.
- If !LookAhead bitrate control is enabled, number of frames that are analyzed before encoding, from 11 to 60.
- Default: 40
- Note: may be sanitized to a lower value in some cases to avoid hangs.
- Caveats: requires hardware support (4th gen. Intel Core processor or equivalent), and driver support for version 1.7 of the Media SDK API.
- force-cqp <boolean>
In Constant Quality mode, use Constant QP rate control, even if Intelligent Constant Quality is available.
Default: 0 (ICQ enabled if available)
- In Constant Quality mode, use Constant QP rate control, even if Intelligent Constant Quality is available.
- Default: 0 (ICQ enabled if available)
- cqp-offset-i <integer>
- cqp-offset-p <integer>
- cqp-offset-b <integer>
In constant QP (CQP) bitrate control mode, specify offset from the global quality/QP value for I, P and B-frames.
Defaults are 0, 2 and 4, respectively.
- cqp-offset-i <integer> | cqp-offset-p <integer> | cqp-offset-b <integer>
- In constant QP (CQP) bitrate control mode, specify offset from the global quality/QP value for I, P and B-frames.
- Defaults are 0, 2 and 4, respectively.
- vbv-maxrate <integer>
Sets the maximum rate the VBV buffer should be assumed to refill at, in kilobits per second (Kbps).
Default: 0 (set at runtime by the implementation)
Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).
- Sets the maximum rate the VBV buffer should be assumed to refill at, in kilobits per second (Kbps).
- Default: 0 (set at runtime by the implementation)
- Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).
- vbv-bufsize <integer>
Sets the size of the VBV buffer in kilobits (Kb).
Default: 0 (set at runtime by the implementation)
Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).
- Sets the size of the VBV buffer in kilobits (Kb).
- Default: 0 (set at runtime by the implementation)
- Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).
- vbv-init <float>
Sets how full the VBV Buffer must be before playback starts.
If it is less than 1, then the initial fill is: vbv-init * vbv-bufsize.
Otherwise it is interpreted as the initial fill in kilobits (Kb).
Default: 0 (set at runtime by the implementation)
Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).
- Sets how full the VBV Buffer must be before playback starts.
- If it is less than 1, then the initial fill is: vbv-init * vbv-bufsize.
- Otherwise it is interpreted as the initial fill in kilobits (Kb).
- Default: 0 (set at runtime by the implementation)
- Note: not compatible with Constant QP, Intelligent Constant Quality or !LookAhead rate control methods (ignored).