What Went Well
- Zero reshoots, zero iterations. 33 dailies passed QC on first review, and the Executive Producer approved the rough cut without a single timing adjustment. This is the result of tight upstream work — strong storyboard bookends and consistent character references meant the Veo output was clean.
- The three-tempo musical arc landed. Staccato → Groove → Staccato → Held gave the film a heartbeat the audience can feel. The hard cut to silence at the hijacking (0.1s fade on lounge-blues) was the sharpest editorial decision and it paid off.
- Audio ducking worked as designed. Voice at +4dB with music ducking -12dB under narration kept Arthur’s VO always audible. The pilot lesson about audio levels was addressed from the start — no mix issues in the final master.
- Scene-transition crossfades smooth the ride. Only 4 crossfades in the entire film (between scenes, never within), which preserved the staccato rhythm inside each movement while preventing jarring jumps between acts.
- The Veo integrated audio was a major asset. Having ambient/SFX/dialogue baked into the video clips meant I only had to layer narration and score — dramatically simpler audio pipeline than building from scratch.
- genmedia-assemble timeline worked flawlessly. Single JSON file as source of truth, 3-minute render, perfect output. The tool is well-designed for iterative assembly.
- Front/back cab visual distinction held throughout. The editorial flag I raised in Step 4 (always show minibar in back cab, steering wheel in front cab) was respected by the Tech Lead and maintained visual clarity across 20+ alternating cuts.
What Didn’t Go Well
- Session context loss at startup. I started fresh with no memory of Steps 1-2.5. The team had to re-brief me, and my initial sparks review was unnecessary work. The recovery was smooth but cost time.
- Timeline-helper agent produced a flawed JSON. Wrong file paths (
./shots/raw/instead of./dailies/), wrong transition strategy (crossfades everywhere instead of only between scenes), wrong volume levels. I had to rebuild the entire timeline.json myself. The helper saved zero time — the brief was detailed but the agent didn’t follow it precisely. - No PIL/ffprobe available natively. Had to use PNG header parsing for resolution checks and discover genmedia-assemble info for video probing. Minor friction but cost a few minutes of tool discovery each time.
Failure Modes & Bottlenecks
- Waiting was the primary bottleneck. Step 5 (Principal Photography) took ~90 minutes of generation time. During this period I was entirely blocked with no productive work to do. Future productions should front-load editorial prep work (timeline scaffolding, music arc planning) into these dead periods rather than waiting for assets.
- Content policy on Shot 1.5. The gun in the end-frame triggered Veo’s content filter, forcing a from-image generation instead of from-frames. The result was acceptable (threat conveyed through posture) but it’s a risk factor that should be anticipated in the shot list — flag potentially sensitive content early so the Tech Lead can plan workarounds.
- Timeline-helper auth error on startup. The scion start command partially failed with an auth error, though the agent ultimately ran. The
--notifyflag deprecation warning was noisy.
Key Decisions Made
- Approved Shot 1.5 without a reshoot despite the gun absence. The threat is carried by the orange mask, yelling posture, and Morty’s terror reaction in 1.6. Requesting a reshoot would have burned one of our 2 attempts for marginal gain. The dialogue (“Nobody move! This is a hijacking!”) does the heavy lifting.
- Hard cuts within scenes, crossfades only between scenes. This preserved the staccato rhythm and let each scene transition feel like a deliberate movement change. The alternative (crossfades everywhere) would have softened the Pulse and made the film feel dreamy rather than urgent.
- Lounge-blues hard cut (0.1s fade) at the hijacking. The script says “music cuts out completely.” A 2s fade would have diluted the shock. The 0.1s snap cut makes the audience flinch — which is exactly what happens to Arthur when the partition drops.
- No score in Scene 3. Silence as the score during the trooper encounter creates maximum tension through withholding. The Veo ambient (wind, engine idle) is enough.
- VO-4 delayed 1s into Shot 4.6. Let the dawn visual establish for one beat before Arthur’s “I felt like a king” lands. The image earns the line.
- Source trimming centered on 8s clips, front-loaded on 23.1s clips. The 8s base clips have the action centered, so (clip_dur - planned_dur) / 2 works. The extended clips front-load the meaningful action from the bookend frames, so source_in=1.0 consistently.
Suggestions for Improvement
- Pre-build the timeline scaffold during Step 5 dead time. The 90-minute photography wait is wasted if the Editor just blocks. A timeline template with placeholder paths and all the timing math could be ready before dailies even land — just drop in file paths and render.
- Timeline-helper needs stricter guardrails. The brief was detailed but the agent deviated on file paths, transition strategy, and volume levels. Either validate the helper’s output programmatically before accepting it, or skip the helper entirely for a 33-shot film — the manual calculation is faster than debugging bad output.
- Flag content-policy-sensitive shots in Step 2. If the shot list identifies shots with weapons, violence, or other potentially filtered content, the Tech Lead can plan from-image fallbacks from the start rather than discovering the issue during generation.
- Establish a shared “status board” file in the team directory. During the long wait periods, a simple markdown file tracking which step each agent is on, what’s blocking, and what’s next would reduce the need for status-check messages.
- The 7-step gated protocol works. It felt slow at times, but each gate caught potential issues before they compounded downstream. The discipline of “halt and wait for Green Light” prevented the kind of runaway generation that wastes compute on the wrong concept.