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+), GTX/RTX Turing (1650+, 2060+) or Ampere (3060+) series GPU or better
- NVIDIA Graphics Driver 522.25 or later
- Windows 10 or later
- Limited support is available on some modern Linux Distro’s
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 NVEEnc and NVDec is enabled in preferences on the video tab. If your system is not supported, the option will be disabled.
On Linux, there is no preference to enable the encoder. It will be available if the hardware / drivers report it as available.
Presets
The following presets are available under the ‘Hardware’ category in the presets menu:
- H.265 NVENC 2160P 4K
- H.265 NVENC 1080p
These are a good starting point for configuring HandBrake to use these encoders.
Performance
HandBrake supports the NVIDIA NVENC encoder and NVDEC encoder.
The CPU will still be used for:
- Video decoding (If hardware decoding is turned off or unavailable)
- All video filters
- Audio encoding
- HandBrake’s engine, A/V sync etc
- Subtitles
- Muxing
These operations all happen in parallel as the job progresses. As such, it is normal to see high (or even 100%) CPU utilisation even when using NVENC.
It is also common, particularly on lower-end or older hardware, for the CPU to be a bottleneck which will cause lower than expected performance. To minimize this effect, disable any filters that you do not require.
Decoder Limitations
HandBrake will automatically fallback to software decoding when any filter is enabled in the pipline. This includes the crop/scale filter.
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.
If using HandBrake’s graphical interface, you can set the options in the Advanced Options field on the Video tab in the following format:
option1=value1:option2=value2
If using HandBrake’s command line interface, use the --encopts parameter as follows:
--encopts="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). |