Brandon ThomasandClaude Opus 5.5
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Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, hardware, UI and localization parity docs. Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Hardware parity
Last reviewed: 2026-10-10 · Last updated: 2026-10-10 · Change: major (new file: hardware decode / encode per platform and codec, GPU effects, devices; re-measured after NVDEC #549 and GPU export #421) · Target: Adobe Premiere Pro 2026 (26.5.2)
Each hardware feature Premiere uses, per platform, against ours. Implementation detail lives in
crates/platform/README.md (decode / encode backends, the one
crate allowed unsafe, ADR 0001), the GPU compositor in
architecture.md, and timings in performance.md.
Hardware paths are always optional: our software codecs are the tested fallback, and a hardware
decoder that fails mid-stream hands over to software (HybridDecoder).
Premiere's side is from Adobe's published GPU and hardware-acceleration documentation and release notes (Premiere does not run on Linux).
Hardware decode
| Codec / profile | Premiere macOS | Ours macOS (VideoToolbox) | Premiere Windows | Ours Windows (Media Foundation / D3D11) | Ours Linux (NVDEC, VA-API) |
|---|---|---|---|---|---|
| H.264 8-bit 4:2:0 | yes | yes | Intel, NVIDIA, AMD | yes (Baseline / Main / High) | yes (NVDEC; VA-API Intel / AMD / Mesa) |
| H.264 10-bit / 4:2:2 | Apple silicon | yes where the chip decodes it | Intel; NVIDIA Blackwell (MXF too) | no (declined; no software fallback, G3) | no |
| HEVC Main / Main 10 4:2:0 | yes | yes | yes | yes | yes (NVDEC 8/10; VA-API Main / Main 10) |
| HEVC 4:2:2 10-bit | Apple silicon | yes where supported | Intel; NVIDIA Blackwell | no | no |
| VP9 profile 0 / 2 | — | software | — | yes | software (VA-API VP9 not yet) |
| AV1 main 8 / 10 | — | software | yes | yes | software |
| ProRes | Apple silicon (M1 Pro / Max and later) | software (fast: 318 fps) | software | software | software |
| Field-coded H.264 | yes | no | yes | no | no |
Measured (cargo xtask bench --hw off|auto): M4 Pro, CPU per 2160p frame H.264 119 → 4.2 ms,
HEVC 86 → 3.7 ms, 4K plays with no dropped frames at Full; Intel Iris Xe VA-API H.264 2160p
417 → 11.4 ms, HEVC Main 10 2160p 212 → 18.4 ms. Every decoded picture is read back to the CPU
and re-uploaded to wgpu (no zero-copy yet), which Premiere avoids.
Hardware encode
| Codec | Premiere macOS | Ours macOS | Premiere Windows | Ours Windows | Ours Linux |
|---|---|---|---|---|---|
| H.264 8-bit | yes | yes (VideoToolbox, opt-in, no B-frames) | Intel QSV, NVENC, AMD | NVENC only (opt-in) | NVENC only |
| H.264 10-bit / 4:2:2 | yes (Apple silicon) | no | Intel | no | no |
| HEVC Main 8-bit | yes | yes (hardware-only format) | QSV, NVENC, AMD | NVENC only | no |
| HEVC Main 10 / HDR (PQ, HLG) | yes | no (tone-mapped to 8-bit SDR) | yes | NVENC yes (HDR10 SEI, mdcv / clli) |
no |
| ProRes | Apple silicon | software only | software | software | software |
| AV1 | — | no | via plug-ins / newer GPUs | no | no |
Measured: VideoToolbox H.264 1080p25 encode 200 fps on M1; a 9:29 timeline exported in 311 s against 793 s with our software encoder (SSIM 0.990). NVENC HEVC round trip 48.9 dB luma PSNR (8-bit), 71.1 dB (10-bit) on an RTX 5060.
GPU rendering
| Feature | Premiere (Mercury Playback Engine: Metal, CUDA, OpenCL) | Ours (wgpu: Metal, D3D12, Vulkan) | % |
|---|---|---|---|
| Compositing, blend modes, transforms | GPU | GPU (#32), CPU compositor is the oracle | 90% |
| Accelerated video effects | ~82 of ~92 effects marked Accelerated (reference list plan/premiere/10-effects-list.md) |
34 effect ids (render::gpufx::GPU_EFFECTS): colour, levels, blurs, sharpen, crop, transform, flips, vignette, video limiter, ASC CDL, channel mix, Lumetri basic / creative / vignette |
~40% |
| Lumetri curves, wheels, HSL secondary | GPU | CPU | 0% |
| Keys (Ultra Key), masks, distortions, transitions | GPU | CPU (masks have WGSL parity tests, not in the live path) | 10% |
| Export rendering on the GPU | yes | yes (#421; Export ▸ GPU Rendering, Auto): 2.4× (1080p) to 3.2× (4K) faster on effects-heavy timelines | 80% |
| Thumbnails on the GPU (26.0) | yes | CPU | 0% |
| Software adapter fallback | warns | silently renders everything on the CPU (#632) | — |
| Intel integrated graphics | supported | start-up crash on Intel UHD (#512) | — |
Devices and I/O
| Hardware | Premiere | Ours | % |
|---|---|---|---|
| Audio interfaces | CoreAudio, ASIO, WASAPI; multichannel mapping | cpal (CoreAudio, WASAPI, ALSA); no ASIO; device reports #605, #602 | 60% |
| Voice-over microphone | yes | yes (punch-in); macOS privacy declaration missing (#659) | 80% |
| External video monitoring (Mercury Transmit, Blackmagic DeckLink, AJA) | yes | no | 0% |
| Second computer monitor full-screen playback | yes | full screen inside the app window; no separate-display output or floating windows on other screens (#466) | 40% |
| HDR / EDR display | macOS EDR, Windows HDR | no (SDR display of HDR sequences) | 0% |
| Control surfaces (EUCON, Mackie HUI / MCU) | yes | no | 0% |
| LTC timecode input | yes | no | 0% |
| Tape / deck control | legacy | no | n/a |
Summary
Hardware dimension: ~45%, 120–200 h. Ahead of Premiere: hardware decode on Linux (VA-API, NVDEC) and FreeBSD builds. Behind, by user impact: zero-copy upload; GPU effects beyond 34 (Lumetri curves / wheels / HSL, keys, masks, transitions); Quick Sync and AMD encoders on Windows; VideoToolbox Main 10 HDR encode; 10-bit / 4:2:2 decode off macOS; HDR display; external video I/O and control surfaces (need hardware we don't own). Calibration: one decode backend ~3–5 h, one encoder ~4–8 h (target-app-parity.md).
Revision history
| Date | Change | Summary |
|---|---|---|
| 2026-10-10 | major | Created from ROADMAP.md's performance-and-hardware row and crates/platform/README.md; added Linux NVDEC (#549), GPU export and Lumetri on the GPU (#421), Premiere's per-platform hardware list, devices and I/O |