This article is for an older version of HandBrake. All versions.
Dieser Artikel ist für eine ältere Version von HandBrake. Alle Versionen.
NVIDIA NVENC
Supported Hardware and Configurations
- NVIDIA GeForce GTX Pascal (1050+) and RTX Turing (1650+, 2060+) series GPU or better
- NVIDIA Graphics Driver 418.81 or later
- Windows 10
- Experimental Linux support is available in HandBrake’s command line interface
Please note, these are not hard limits. Hardware encoding via NVENC might work on older series GPUs and older operating systems, but this is not officially supported.
Enabling support
Support for the NVIDIA NVENC encoder is enabled in preferences on the video tab. If your system is not supported, the option will be disabled.
Performance
Only video encoding is performed by the hardware encoder. Every stage prior to and after video encoding including decoding, filters, audio/video sync, audio encoding, muxing, etc., is performed by the CPU. As a result, it is normal to have high (even 100%) CPU utilisation during encodes.
It is common, particularly on lower-end hardware, for the CPU to be a bottleneck for the hardware video encoder. To minimize this effect, disable any filters that you do not require.
Advanced options
The NVIDIA NVENC hardware encoder has a limited set of advanced encoder options. Generally speaking, it is not recommended to change these parameters, as the built-in presets offer a good range of options for common uses.
From HandBrake’s command line interface, use the --encopts parameter as follows:
--encopts="option1=value1:option2=value2"
From HandBrake’s graphical interface, set the options in the Advanced Options field on the Video tab:
option1=value1:option2=value2
Option value types
The following value types are supported (each option only accepts one value type):
integer
A number that can be written without a fractional or decimal component.boolean
0 means off (or disabled).
1 means on (or enabled).string
An alphanumeric string of characters. See the option’s comments for acceptable values.
Options list
| Option | Type | H.264 | H.265 | Detail |
|---|---|---|---|---|
| gpu | string | ✓ | ✓ | GPU selection. Values: any (default), 0 (first GPU), 1 (second GPU), etc. |
| coder | string | ✓ | Coder selection. Values: auto (default), cabac, cavlc. |
|
| temporal-aq | boolean | ✓ | Set to 1 to enable Temporal Adaptive Quality, 0 to disable (default). Note the hyphen for H.264. |
|
| temporal_aq | boolean | ✓ | Set to 1 to enable Temporal Adaptive Quality, 0 to disable (default). Note the underscore for H.265. Requires RTX Turing 1660 or better. |
|
| spatial-aq | boolean | ✓ | Set to 1 to enable Spatial Adaptive Quality, 0 to disable (default). Note the hyphen for H.264. |
|
| spatial_aq | boolean | ✓ | Set to 1 to enable Spatial Adaptive Quality, 0 to disable (default). Note the underscore for H.265. |
|
| aq-strength | int | ✓ | ✓ | When Spatial AQ is enabled, the values scale is 1 (low) – 15 (aggressive). Default: 8. |
| nonref_p | boolean | ✓ | ✓ | Set to 1 to enable automatic insertion of non-reference P-frames, 0 to disable (default). |
| strict_gop | boolean | ✓ | ✓ | Set to 1 to minimize GOP-to-GOP rate fluctuations, 0 to disable (default). |
| weighted_pred | boolean | ✓ | ✓ | Set to 1 to enable weighted prediction, 0 to disable (default). |
| rc-lookahead | int | ✓ | ✓ | Number of frames to look ahead for rate control. Default: 0. |
| b_adapt | boolean | ✓ | When lookahead is enabled, set this to 1 to enable adaptive B-frame decision (default), 0 to disable. |
|
| no-scenecut | boolean | ✓ | ✓ | When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts, 0 to enable (default). |