[NicolasHug]

Probed in C++ with avifDecoderParse(), which is ~2x faster than parsing the ISOBMFF boxes in Python and matches libavif's validation exactly. Paths use avifDecoderSetIOFile() so only the needed boxes are read.

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[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/meta-pytorch/torchcodec/1792

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❌ 1 New Failure, 5 Unrelated Failures

As of commit 709412b with merge base ffb098a ():

NEW FAILURE - The following job has failed:

• Windows CUDA / install-and-test (3.11, 13.0, 9) (gh)
  Unable to download artifact(s): Artifact not found

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• Windows CUDA / install-and-test (3.11, 13.0, 6) (gh) (detected as infra flaky with no log or failing log classifier)
• Windows CUDA / install-and-test (3.11, 13.0, 7) (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Windows CUDA / install-and-test (3.11, 13.0, 4) (gh) (trunk failure)
• Windows CUDA / install-and-test (3.11, 13.0, 8) (gh) (trunk failure)
• Windows CUDA / install-and-test-on-cpu-only-machine (gh) (trunk failure)
  Unable to download artifact(s): Artifact not found

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