Lab Case 03

HEVC 10-bit 4:2:2 Conditional Workflow

A synthetic HEVC source that exercises environment-dependent bit-depth and chroma rules.

✓ Synthetic fixture✓ Browser-local test✓ Reproducible

Expected top-level behaviorConditional

What this case is designed to prove

Verify that ClipCompat does not promise universal support for a HEVC 10-bit 4:2:2 source when actual decoding can depend on editor, OS, edition, hardware and drivers.

Sample filehevc-422-10bit.mp4about 50 KB · synthetic test media

Download sample

Generated locally with FFmpeg/libx265 from synthetic test patterns. It contains no user footage.

SHA-2564d81b174f7ef39e88dad882e7e7de8cb082200c32277d64c93a2d1191ed14a54

VerificationFixture characteristics cross-checked with FFprobe 7.1.5 on September 30, 2026.

Sample input

Known media facts

These are the characteristics the fixture was generated to expose. MediaInfo may format some labels slightly differently across versions.

ContainerMPEG-4 / MP4

Video codecHEVC / H.265

ProfileRange Extensions

Resolution320 × 180

Frame rate30 fps

Frame-rate modeCFR

Bit depth10-bit

Chroma4:2:2

AudioAAC / 48 kHz

Expected behavior

What ClipCompat should report

Premiere on Windows should report a conditional hardware-dependent HEVC 10-bit 4:2:2 finding rather than a universal pass.
Resolve on Windows should report environment-dependent H.265 profile/chroma support; Free and Studio context should remain visible to the user.
The result should recommend testing the original before any transcode.

Fixture context

What the fixture confirms

The generated file uses a 10-bit 4:2:2 pixel format and HEVC Range Extensions profile. The fixture exists specifically to test cautious rule wording instead of binary compatibility claims.

Safe handling

Do not overwrite the master. If the exact editing setup cannot decode the source reliably, make a separate edit-friendly copy.

Observed analyzer evidence

From sample facts to a practical verdict

These synthetic files were analyzed on 2026-10-11 using MediaInfo WASM and the same normalization and compatibility rules used by the checker. This run used Node.js; it was not an import or playback test in Premiere or Resolve.

HEVC 10-bit 4:2:2 Conditional Workflow

Detected media: MPEG-4 · HEVC · Format Range
Image and timing: 10-bit · 4:2:2 · CFR
Premiere / Windows: Conditional
Resolve Free / Windows: Conditional

Why Premiere / Windows received this result

HEVC 10-bit 4:2:2 is hardware-dependent
Adobe documents HEVC 4:2:2 10-bit decoding on supported Intel platforms and hardware acceleration on supported Apple silicon. Your exact CPU/GPU and driver still matter.
Evidence: official support

Next action: Try the original first. If playback or import is unreliable, verify your hardware decoder support before transcoding.

Download the same sample

A readable codec is not a guarantee of editor support. Test Required records a limit of the current rules; Supported is not an editor benchmark. Download raw MediaInfo output, normalized facts, checksums and full findings (JSON). Read the methodology.

Run the test

Open a related checker.

The same sample can intentionally produce different guidance depending on the selected editor target.

ToolPremiere Pro CheckerOpen checker →ToolDaVinci Resolve CheckerOpen checker →ToolVideo Compatibility CheckerOpen checker →

Related troubleshooting guides

DaVinci Resolve 10-bit 4:2:2 compatibility →DaVinci Resolve H.265 not working →

More evidence

Compare all five Lab Cases.

Use the case index to move from a common H.264 baseline to VFR, HEVC 10-bit 4:2:2, VP9 and AV1 test media.

View all Lab Cases