Lower peak mem usage for 8 bit formats with pyav.

[comfyanonymous]

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📥 Commits

Reviewing files that changed from the base of the PR and between a164c82 and b2c916c.

📒 Files selected for processing (1)

• comfy_api/latest/_input_impl/video_types.py

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📝 Walkthrough

Walkthrough

The video frame decoding logic in the video types module has been modified to dynamically determine both the pixel format and post-processing function based on the decoded frame's characteristics. Previously, alpha channel detection would only modify the pixel format to a single hard-coded float format. Now, the system selects an appropriate post-processing function alongside the pixel format, which is applied to the final image and alpha tensors after collection. This allows format-specific normalization to float [0,1] while preserving other formats as-is.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	No description was provided by the author, making it impossible to assess relevance to the changeset.	Add a pull request description explaining the memory optimization approach and any performance implications of the changes.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly describes the main optimization: reducing peak memory usage for 8-bit formats when using PyAV for video decoding.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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