Cut to the Beat

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Adeval Criteria

Does the video output match the beat of the music with scene cuts?

Status
Fail
Category
Video Production
Updated
May 7, 2026
Model
Veo 3.1
Generations used
5
Time taken
2964

Evaluation Rationale

This test case fails. While the agent followed the instructions to generate a sequence of cuts based on the text prompt, the output failed to meet the primary output technical specifications. Because the video and music tracks were baked together in a single file, the act of making cuts to the video inherently severed the music track, ruining the rhythm and destroying the drumbeat synchronization. The root cause is a fundamental workflow and model limitation; the agent lacks the capacity to separate fused audio-visual stems and failed to recognize that editing a single-track file would compromise the audio integrity. Consequently, the output is unusable in a real-world professional context as it delivers a broken audio-visual experience where the music is functionally destroyed.

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Output

Red: Not supported; Green: Supported

Primary deliverable: Edited video master (.mov ProRes)

• Master: ProRes 422 HQ; 1920×1080 or 4K; 25/30fps; timecode
• Delivery: MP4 H.264; target 10–20 Mbps; AAC 48kHz
• Project handoff: Premiere/Resolve project + media relinked; graphics as .aep if used

Input prompt

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Using the generated 30-second video from Cinematic Storytelling, use video cutdown agent along with a music track with distint beats that matches Plaque slayer's brand to cut the video down to 6 seconds while prompting for the cuts from one scene to another to match the beats of the music.