In DaVinci Resolve, hardware-accelerated encoding is one checkbox in the Deliver page's render settings, and the reference manual defines it in a single sentence: "Use hardware acceleration if available: DaVinci Resolve supports QuickSync hardware encoding of H.264 and HEVC, if available on your workstation."
That sentence carries more information than its length suggests. It names a specific technology (QuickSync), it names exactly two codecs (H.264 and HEVC), and it attaches a condition (if available on your workstation). None of those three things can be dropped without turning the sentence into something the manual does not say.
It also is not the setting most people end up toggling. There is a second checkbox, in a different panel, whose name is close enough that the two get written about as if they were one control.
The setting that is not the one you want
In System Preferences, under Decode Options, the manual documents this:
"Decode H.264/HEVC using hardware acceleration: Allows the use of hardware acceleration for H.264 or HEVC playback, if available on the computer you're using."
Read the verb. The official wording is playback, and the option lives under Decode Options. This is the read side: it governs how H.264 and HEVC media is decoded for playback on your timeline.
The export-side checkbox is in the Deliver page's render settings, alongside the codec and bit rate controls. Two panels, two checkboxes, two directions of travel. If you have been told to "turn on hardware acceleration to make renders faster" and you went to System Preferences, you changed the decoding preference, not the encoding one.
Where the export checkbox actually appears
The manual groups the export-side controls under a heading it spells out verbatim as "Optional MP4, H.264, H.265, VP9, or HEVC Controls", and it is explicit about when they show up:
"If you choose MP4 as the format, or QuickTime with H.264, H.265, or VP9 as the codec, additional options appear, described below. Workstations using NVIDIA GPUs that offer NVENC will present alternative accelerated options, while other workstations offering QuickSync hardware encoding instead will be able to use that option."
Two practical consequences follow directly from that quote.
The controls are conditional on your format and codec choice. The trigger the manual names is MP4 as the format, or QuickTime with H.264, H.265 or VP9 as the codec.
The panel is not the same on every machine. The manual says NVIDIA workstations with NVENC "present alternative accelerated options", while QuickSync machines "will be able to use that option" — the checkbox. So a screenshot from someone else's workstation is not necessarily a picture of what you will see.
QuickSync and NVENC do not expose the same controls
This is where the official documentation gets specific, and where most write-ups stop short. Three controls in this panel carry an NVIDIA-only qualifier in the manual.
Entropy Mode gets renamed. The manual's own parenthetical: "Entropy Mode: (called Entropy Coding Mode for compatible Nvidia GPUs) A dropdown that lets you choose which algorithm the encoder should use for compression." Same control, different label depending on your GPU. Its two documented options are "CALVC (context-adaptive variable-length encoding): A lower-quality algorithm that's less computationally intensive to process and play" and "CABAC (context-based adaptive binary arithmetic coding): A higher-quality algorithm that yields better visual quality at lower bandwidth, at the cost of being more computationally expensive to process and play." (The misspelling of CAVLC is Blackmagic's, reproduced here as printed.)
Rate Control is NVIDIA-only. Verbatim: "Rate Control: (Available for compatible NVIDIA GPUs) Provides six options for controlling Encoding Profile and Entropy Mode." The manual gives the count and stops there — it does not name the six. If you need to know what they are called, check the official documentation rather than any list you find repeated online.
Lookahead is NVIDIA-only. Verbatim: "Lookahead: (Available for compatible NVIDIA GPUs) Lets you specify how many frames for the encoder to examine in advance of compression." No default value and no valid range are documented.
The honest summary: on an NVENC workstation you get two encoder controls that a QuickSync workstation does not show, and one control under a different name. Whether that produces a better file is not something Blackmagic's documentation claims either way.
Acceleration is "subject to hardware support"
The Supported Formats and Codecs document (the one whose cover is dated July 2025) closes with a NOTES block, and one line there is the ceiling on everything above:
"GPU accelerated encoding and decoding of formats is subject to hardware support. Please refer to the hardware manufacturer's documentation."
Blackmagic is pointing at your GPU vendor, not at itself. That is the same "if available on your workstation" condition as the checkbox, stated at document level.
The same document splits its tables into three chapters, and the H.264 / H.265 encode cells read differently in each:
| Chapter | H.264 / H.265 — Encode value, verbatim |
|---|---|
| macOS | "Yes, GPU accelerated" |
| Windows | "8-bit OS-supported profiles. More profiles and GPU acceleration in Studio" (H.264); "8/10-bit OS-supported profiles. More profiles and GPU acceleration in Studio" (H.265) |
| Rocky Linux 8.6 (CUDA) | "Studio and Nvidia graphics (GPU accelerated)" |
The Windows row carries three separate pieces of information, and dropping any one of them misrepresents it: the profiles are 8-bit, they are whatever the operating system supplies, and what Studio adds is more profiles and GPU acceleration. The Linux encode value names two conditions at once — Studio and Nvidia graphics. On the product side, the Studio page says Studio "supports up to 120fps at a massive 32K resolution, as well as support for multiple GPUs for real time playback of professional 10-bit formats, and accelerated H.264 and H.265 hardware decoding and encoding." For a full platform-by-platform read of those rows, see H.264 export across Windows, macOS and Linux.
What hardware acceleration does not do
It does not remove the encode. In the July 2025 codec document, the column labelled "Codec Passthrough(1)" is the one that marks formats which can skip re-encoding, and its footnote defines it as whether "codec renders can be sped up by reusing the original source video essence if there are no effects or color changes to the clip." For H.264, H.265, MV-HEVC, AV1 and VP9, that cell is a dash on every platform and in every container. Hardware acceleration changes who performs the encode; it does not make it not happen. That distinction is covered in full in how Bypass re-encode works.
It also is not a file-size control. If the reason you are here is that an export is too big to send, the codec panel is the wrong lever and a second pass is the faster route:
Try it right here
Runs in your browser. Your file is not uploaded anywhere.
This runs locally in your browser tab — the file is read from disk, re-encoded, and handed back without being uploaded anywhere. For the rest of the browser-side conversions and the full tool list, or for more Resolve delivery walkthroughs, browse the guides hub.
FAQ
Does hardware acceleration lower export quality in DaVinci Resolve? Blackmagic's documentation does not state that it does, or that it does not. The only speed-versus-quality tradeoffs the manual documents on this panel are Entropy Mode (CALVC is described as lower quality and less computationally intensive, CABAC as higher quality and more expensive) and Frame Reordering, where "Turning off Frame Reordering will speed encoding performance at the expense of visual quality."
Why is there no hardware acceleration checkbox in my render settings? The manual documents those additional options as appearing when you choose MP4 as the format, or QuickTime with H.264, H.265 or VP9 as the codec, so start by checking the format and codec you have selected. It is also presented differently on NVIDIA workstations with NVENC than on QuickSync workstations.
Does the System Preferences option speed up rendering? Its official description is about playback: "Allows the use of hardware acceleration for H.264 or HEVC playback, if available on the computer you're using." It sits under Decode Options. The export-side control is a separate checkbox in the Deliver page.
What are the six Rate Control options? The manual says only that Rate Control "Provides six options for controlling Encoding Profile and Entropy Mode" and does not list them. Check the official documentation for the names rather than relying on secondhand lists.
Do I need Studio for GPU-accelerated encoding? It depends on your platform, and the codec document answers it per chapter: macOS reads "Yes, GPU accelerated" with no version qualifier; Windows says more profiles and GPU acceleration are in Studio; Rocky Linux says "Studio and Nvidia graphics (GPU accelerated)".
Quotations are from the DaVinci Resolve 21 Reference Manual and the official Supported Formats and Codecs document dated July 2025, checked 19 September 2026. Blackmagic's spelling and punctuation are reproduced as printed.
