Haocheng lu2
Author: LuHC409
Pull request: yes

# What does this PR do?

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This PR fixes an issue in the _preprocess function of the Qwen2VLImageProcessor class, located in:
transformers/src/transformers/models/qwen2_vl/image_processing_qwen2_vl.py
Previously, when the number of patches was not divisible by temporal_patch_size, the code mistakenly repeated the last patch temporal_patch_size - 1 times, which could cause overshooting. This PR corrects the padding logic by computing the exact number of repeats needed:
pad_len = temporal_patch_size - (patches.shape[0] % temporal_patch_size)
repeats = np.repeat(patches[-1][np.newaxis], pad_len, axis=0)
Motivation and context
This change ensures that the total number of temporal patches is always divisible by temporal_patch_size, without introducing unnecessary extra patches. It avoids shape mismatch or over-padding problems in the later reshape steps.

Local Testing
✅ I have tested this change locally and confirmed that all tests pass.


Fixes # (issue)
https://github.com/huggingface/transformers/issues/37064

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