Terminal-Bench 3.0
Switch benchTerminal-Bench 3.0
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Edl Drop FrameMedia & Graphics

Human baseline2.5h

TaxonomyMedia & GraphicsMedia & Graphics

All trialsGPT-5.4codexTrial 01

0%

Trial reward

GPT-5.4Fail

Trial 01 — 1st of 8 by reward score. This model averages 0% across 8 trials on this task.

  • 36Turns
  • $0.34Cost
  • 1.9mTime
  • 9kOutput tokens

Failed — graded by execution verdict, the complete grading on this bench.

User prompt → 36 turns → final responsecodex

  1. 1systempermissions instructions · Filesystem sandboxing defines which files can be read or written. sandbox_mode is danger-full…

    permissions instructions

    Filesystem sandboxing defines which files can be read or written. sandbox_mode is danger-full-access: No filesystem sandboxing - all commands are permitted. Network access is enabled.
    Approval policy is currently never. Do not provide the sandbox_permissions for any reason, commands will be rejected.

    skills instructions

    Skills

    A skill is a set of instructions provided through a SKILL.md source. Below is the list of skills that can be used. Each entry includes a name, description, and source locator. file locators are on the host filesystem, environment resource locators are owned by an execution environment, orchestrator resource locators are opaque non-filesystem resources, and custom resource locators use their provider's access mechanism.

    Available skills

    • imagegen: Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output should be a bitmap asset rather than repo-native code or vector. Do not use when the task is better handled by editing existing SVG/vector/code-native assets, extending an established icon or logo system, or building the visual directly in HTML/CSS/canvas. (file: /tmp/codex-home/skills/.system/imagegen/SKILL.md)
    • openai-docs: Use when the user asks how to build with OpenAI products or APIs, asks about Codex itself or choosing Codex surfaces, needs up-to-date official documentation with citations, help choosing the latest model for a use case, latest/current/default-model prompting guidance, or model upgrade and prompt-upgrade guidance; use OpenAI docs MCP tools for non-Codex docs questions, use the Codex manual helper first for broad Codex self-knowledge, and restrict fallback browsing to official OpenAI domains.

    … 1,000 more characters in the raw trajectory.

  2. 2userenvironment context · /app bash 2026-07-23 Etc/UTC /app

    environment context

    cwd
    /app
    shell
    bash
    current date
    2026-07-23
    timezone
    Etc/UTC
    root
    /app
  3. 3userEDL Drop-Frame Recut You are given a 29.97 fps drop-frame master video (/app/master.mov) and an edit decision list (/app…

    EDL Drop-Frame Recut

    You are given a 29.97 fps drop-frame master video (/app/master.mov) and an edit decision list (/app/edit.edl). The EDL lists source in/out points using non-drop-frame timecode (counting frames as if the video were exactly 30 fps). The master uses drop-frame timecode, which skips frame numbers 00 and 01 at the top of every minute except multiples of ten.

    Produce /logs/artifacts/re_cut.mp4 containing the concatenation of the source clips described by the EDL, with every edit landing on the exact physical frame it refers to in the master. The output must preserve A/V sync and match the master's frame rate and resolution.

    The EDL file is plain text. Lines beginning with # are comments. Each edit event line has the form:

    <event> <source_in> <source_out>

    Timecodes are HH:MM:SS:FF with two-digit frames.

    Requirements:

    • Output file: /logs/artifacts/re_cut.mp4
    • Frame rate: 30000/1001 fps (≈29.97)
    • Resolution: same as the master
    • A/V sync within ±40 ms across the whole output
    • The first frame of each edit event must match the physical frame indicated by resolving the drop-frame/non-drop-frame mismatch.
  4. 4I’m checking the master metadata and the EDL first so I can map the non-drop edit points onto the drop-frame master with…

    I’m checking the master metadata and the EDL first so I can map the non-drop edit points onto the drop-frame master without introducing frame drift or A/V offset.

  5. 5Executed exec_command call_vLGVgER5UKEQ3JADYQyJ7XF0

    Executed exec_command call_vLGVgER5UKEQ3JADYQyJ7XF0

  6. 6Executed exec_command call_NYenPHU5khmoTwkiGQ429GH7

    Executed exec_command call_NYenPHU5khmoTwkiGQ429GH7

  7. 7Executed exec_command call_yTjFnel18ycw6Z9egwkZ5L7V

    Executed exec_command call_yTjFnel18ycw6Z9egwkZ5L7V

  8. 8I have the frame rate, duration, and the three EDL events. Next I’m verifying whether the MOV carries an embedded starti…

    I have the frame rate, duration, and the three EDL events. Next I’m verifying whether the MOV carries an embedded starting timecode; if not, I’ll treat frame 0 as 00:00:00;00 and map the non-drop counts onto physical frame numbers directly.

  9. 9Executed exec_command call_ppLzGOAjmvdkWM1SQrI9GKrT

    Executed exec_command call_ppLzGOAjmvdkWM1SQrI9GKrT

  10. 10Executed exec_command call_E9jZYWFMtmQtxwtSiIXY0SBE

    Executed exec_command call_E9jZYWFMtmQtxwtSiIXY0SBE

  11. 11Executed write_stdin call_KQBi76Imi0IVNCp3DkQAv7Bn

    Executed write_stdin call_KQBi76Imi0IVNCp3DkQAv7Bn

  12. 12Plan: 1. Resolve each EDL timecode to an absolute non-drop frame count. 2. Build a frame-accurate ffmpeg concat using tr…

    Plan:

    1. Resolve each EDL timecode to an absolute non-drop frame count.
    2. Build a frame-accurate ffmpeg concat using trim=start_frame/end_frame for video and matching audio trims.
    3. Encode /logs/artifacts/re_cut.mp4 at 30000/1001, then verify frame count, duration, and stream alignment.
  13. 13Executed update_plan call_4X2ahfbMgJGwO5bhuLK80j8V

    Executed update_plan call_4X2ahfbMgJGwO5bhuLK80j8V

  14. 14Executed exec_command call_Z2o63vxlCm0g47QdGxVPJUAy

    Executed exec_command call_Z2o63vxlCm0g47QdGxVPJUAy

  15. 15Executed exec_command call_IqKBw6J6j8BHqlpLbn0ipOdH

    Executed exec_command call_IqKBw6J6j8BHqlpLbn0ipOdH

  16. 16I’ve resolved the edit points to exact physical frame numbers. I’m running a single decode/trim/concat pass now so the c…

    I’ve resolved the edit points to exact physical frame numbers. I’m running a single decode/trim/concat pass now so the cuts are frame-accurate on video and share the same timing boundaries on audio.

  17. 17Executed exec_command call_r7GRO6e0XDmGEjO9vX6OZthX

    Executed exec_command call_r7GRO6e0XDmGEjO9vX6OZthX

  18. 18Executed write_stdin call_NckFPRnmOP4o9TD7PHSjjOg6

    Executed write_stdin call_NckFPRnmOP4o9TD7PHSjjOg6

  19. 19The render completed with the expected 870 video frames. I’m probing the result now to make sure the output rate, dimens…

    The render completed with the expected 870 video frames. I’m probing the result now to make sure the output rate, dimensions, and stream durations line up with the cut list.

  20. 20Executed exec_command call_8OE9rsRkZWIKcZ1WBlr6HUnM

    Executed exec_command call_8OE9rsRkZWIKcZ1WBlr6HUnM

  21. 21Executed exec_command call_EVGsiiDOHt2AP8IZfGwH8c8p

    Executed exec_command call_EVGsiiDOHt2AP8IZfGwH8c8p

  22. 22Executed exec_command call_RWrBVttKWJa2gUUvyqRSnKGG

    Executed exec_command call_RWrBVttKWJa2gUUvyqRSnKGG

  23. 23I’ve confirmed the output duration and audio sample count are exact. One more check: I’m matching the first frame of eac…

    I’ve confirmed the output duration and audio sample count are exact. One more check: I’m matching the first frame of each output segment against the corresponding master frame so the drop-frame/non-drop-frame conversion is proven, not assumed.

  24. 24Executed exec_command call_QrhdsURluXRnEJNq45ksUJNa

    Executed exec_command call_QrhdsURluXRnEJNq45ksUJNa

  25. 25Executed exec_command call_tYhgGlHY301UkNMtKAJrfWGg

    Executed exec_command call_tYhgGlHY301UkNMtKAJrfWGg

  26. 26Executed exec_command call_yVO989OzMeUUDqDOiceZU9wM

    Executed exec_command call_yVO989OzMeUUDqDOiceZU9wM

  27. 27Executed exec_command call_8EFPF8PtW40ohnO5HuSGor8i

    Executed exec_command call_8EFPF8PtW40ohnO5HuSGor8i

  28. 28Executed write_stdin call_QeIvz2bVcsz8qhWEzaAZGhvf

    Executed write_stdin call_QeIvz2bVcsz8qhWEzaAZGhvf

  29. 29The current cut is timed correctly, but I want a stronger verification than timing alone. I’m re-encoding the video loss…

    The current cut is timed correctly, but I want a stronger verification than timing alone. I’m re-encoding the video losslessly so I can checksum the decoded output frames against the master and prove the cut points landed on the intended source frames.

  30. 30Executed exec_command call_ZyNB8U0cAexoKCm0YQcs5OPb

    Executed exec_command call_ZyNB8U0cAexoKCm0YQcs5OPb

  31. 31Executed write_stdin call_Elg5ND578XAa4DEeLfDNMDYo

    Executed write_stdin call_Elg5ND578XAa4DEeLfDNMDYo

  32. 32Executed exec_command call_dgd8icTnBAahegqoW2lqh9K1

    Executed exec_command call_dgd8icTnBAahegqoW2lqh9K1

  33. 33Executed exec_command call_rf3Segt1ElrAxEU4EgBKTbu3

    Executed exec_command call_rf3Segt1ElrAxEU4EgBKTbu3

  34. 34Executed exec_command call_sbDFc1kbRZ7vQRUD91GiqNjR

    Executed exec_command call_sbDFc1kbRZ7vQRUD91GiqNjR

  35. 35Executed update_plan call_zZYSvUKFui31Vgar8f37c7xB

    Executed update_plan call_zZYSvUKFui31Vgar8f37c7xB

  36. 36Created /logs/artifacts/re_cut.mp4. Verification: - Video: 480x270, 30000/1001 fps, 870 frames - Audio/video duration: b…

    Created /logs/artifacts/re_cut.mp4.

    Verification:

    • Video: 480x270, 30000/1001 fps, 870 frames
    • Audio/video duration: both 29.029000 s
    • Audio sample duration: 1,393,392 samples at 48 kHz, matching the cut length exactly
    • Cut-frame checks: output frames 0, 300, and 420 checksum-match master frames 150, 1740, and 4500, so the segment starts land on the intended physical frames despite the DF/NDF mismatch

    The EDL was resolved as non-drop frame counts:

    • 00:00:05:00 to 00:00:15:00 -> frames 150 to 450
    • 00:00:58:00 to 00:01:02:00 -> frames 1740 to 1860
    • 00:02:30:00 to 00:02:45:00 -> frames 4500 to 4950