Working Notes on Agent Systems/Brad Zhang

@teach_fireworks / X longform

After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is quite labor-saving.

After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is quite labor-saving. In this case, Codex mainly does three things: 1. U...

June 28, 2026 · 1 min read

After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is quite labor-saving.
Figure 1 / source image

After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is quite labor-saving. In this case, Codex mainly does three things:

  • Use desktop control capabilities to directly operate the editing interface: view materials, replace the timeline, insert new main tracks, search the editing music library, add and trim BGM. 2 Use local ffmpeg to generate a version of about 1 minute of finished film material: Re-splice the original 7 videos, add slow play, montage, multi-image splicing and other processing, while retaining the original fighting/gun sounds. 3 Go back to the cut to do the final project: replace the original timeline with the original sound version, search for battle from the cut music library, add music, and lower the BGM so that the action sounds of the original film are still prominent. The overall process is: Codex first uses programmed editing to quickly produce picture lock, and then uses editing to complete material management, music selection and project saving.

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FORMATTOPICCAPABILITYMARKETcoverscoverssignalsFORMATlongform noteTOPICtechnical distributionTOPICretrievalCAPABILITYproduct surface
Mermaid outline
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  format-long_post["longform note"]
  topic-technical-distribution["technical distribution"]
  topic-retrieval["retrieval"]
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  format-long_post -->|covers| topic-retrieval
  format-long_post -->|signals| capability-product-surface

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Essay structure map

Built from summary and key paragraph positions

After SD2 exports the generated video, almost the entire process is edited using Code...THESISAfter SD2 exports thegenerated video,almost the entireprocess is editedSIGNALAfter SD2 exports thegenerated video,almost the entireprocess is editedOPERATOR1. Use desktop controlcapabilities todirectly operate theediting interface:IMPLICATION1. Use desktop controlcapabilities todirectly operate theediting interface:
Mermaid outline
flowchart LR
  thesis["After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is..."]
  signal["After SD2 exports the generated video, almost the entire process is edited using Codex operation, which is..."]
  operator["1. Use desktop control capabilities to directly operate the editing interface: view materials, replace the..."]
  implication["1. Use desktop control capabilities to directly operate the editing interface: view materials, replace the..."]
  thesis -->|frames| signal
  signal -->|develops| operator
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