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[Bugfix] Fix incorrect use of merge_size in Qwen3-VL video timestamp calculation #37439

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Merged
Isotr0py merged 5 commits into from
Mar 18, 2026
Merged

[Bugfix] Fix incorrect use of merge_size in Qwen3-VL video timestamp calculation #37439

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56d8dee
[Bugfix] Fix misuse of the merge_size parameter in _get_video_second_…
cnyvfang Mar 18, 2026
187c310
Modify the parameter names to comply with the Transformers implementa…
cnyvfang Mar 18, 2026
53a2163
Merge branch 'main' into main
cnyvfang Mar 18, 2026
891a491
Merge branch 'main' into main
cnyvfang Mar 18, 2026
d99dbea
Merge branch 'main' into main
cnyvfang Mar 18, 2026
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4 changes: 2 additions & 2 deletions vllm/model_executor/models/qwen3_vl.py
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Original file line number Diff line number Diff line change
Expand Up @@ -767,7 +767,7 @@ def _get_video_second_idx(
sampled_num_frames: int | None = None,
) -> list[int]:
video_processor = self.get_video_processor()
merge_size = video_processor.merge_size
temporal_patch_size = video_processor.temporal_patch_size
indices = metadata["frames_indices"]

# metadata["fps"] refers to the true fps of the input video.
Expand Down Expand Up @@ -806,7 +806,7 @@ def _get_video_second_idx(
.astype(int)
.tolist()
)
timestamps = self._calculate_timestamps(indices, video_fps, merge_size)
timestamps = self._calculate_timestamps(indices, video_fps, temporal_patch_size)
return timestamps


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