| # Protocols (identical to the runs of the paper; code: https://github.com/Espere-1119-Song/Video-Index) |
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|
| ## VIDEO |
| Frames: one frame per second of the timeline, at most 512 frames per item (uniform thinning beyond; the videos are |
| stored at no more than 2 frames per second and 1,024 frames), each frame resized to short side 224. When a model |
| rejects the request for its size the frame count is halved and the request repeated; the number of frames sent is |
| recorded per item. |
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|
| Prompt (frames first, then the text): |
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| You are given {n} frame(s) sampled from a video. Answer the question based on these frames. |
| |
| Question: {question} |
| A. ... |
| B. ... |
| Reply with ONLY the option letter (or the exact short answer if no options). |
| |
| ## BLIND |
| Question and options only, no frames; four option permutations per item, fixed by |
| random.Random("42|<item_id>").sample(range(k), k); the blind score is the mean over the four permutations. |
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|
| You are given NO frames from the video. Answer the question from the text alone. |
| |
| Question: {question} |
| A. ... |
| B. ... |
| Reply with ONLY the option letter (or the exact short answer if no options). |
| |
| ## Scoring |
| Rule scorer (video_index/scoring.py): the leading option letter of the reply, a stated answer ("the answer is B"), |
| or the option whose text the reply repeats; a reply that names no option is wrong. Gain = VIDEO - BLIND on the same items. |
| |
