Video Transcription

Video Transcription

Use When

• The input is a video file and the goal is speech extraction, timed transcript,

caption generation, multilingual transcript, or edit-prep timestamps.

• Use video-analysis instead when the user needs semantic visual analysis.

Do Not Use When

• The task belongs to ideation, QA, or another released skill listed in the handoff section.
• Required inputs are missing and guessing would change the result.

Execution Boundary

• Hosted video transcription runs through the public postplus media transcribe

verb and is async. The generated example below shows the endpoint key.

• The transcription submit command accepts a remote HTTPS video URL. For a local

video file, first run the generic hosted upload step, read output.data.download_url from the upload result, then pass that HTTPS URL to --video.

• Request timestamps by default when results drive subtitles or edit decisions.
• Hosted video transcription is async. Submit writes request, response, manifest,

normalized transcript path, generation handle, provider status, provider URLs, and artifacts when already completed.

Source And Path

• Before submit, derive durationSeconds from the source video or uploaded

source URL and include it in the hosted capability request input for billing/preflight.

• Start with one source file before larger batches.
• Keep internal requests, responses, normalized transcripts, and downloaded

artifacts under .postplus/video-transcription; keep final user-facing transcript exports outside .postplus.

Handoff

• If status is pending, return the manifest path, the output.data.id generation

handle, and the poll command postplus media poll --handle <output.data.id>. Do not keep the conversation open just to poll.

• When completed, hand off normalizedTranscriptPath, downloaded artifacts, and

final transcript paths to subtitle-packager if SRT/ASS is needed.

Stop Conditions

• Stop when required user intent, source evidence, or owned input artifacts are

missing and guessing would change the result.

• If an owned CLI or script command fails, report the exact error and stop. Do

not bypass the failure with metadata-only answers, readiness probing, local payload rewrites, fallback providers, or unpublished tools.

Public Command Boundary

• Choose the smallest matching command or workflow from the user input and run

it directly.

• Readiness diagnostics: postplus doctor --skill video-transcription.
• If an owned CLI or script command fails, report the exact error and stop. Do

not bypass the failure with metadata-only answers, readiness probing, local payload rewrites, fallback providers, or unpublished tools.

• Use postplus media schema --json only when you need the full endpoint, flag,

and enum contract or are repairing an unknown request shape.

• Run the hosted transcription job with the generated command below; do not call

provider APIs directly.

• For a local file, first run

postplus media-file upload --skill video-transcription --input-file <video-file> --mime <video/mp4|video/quicktime|video/webm> --output <upload.json>. Then read the HTTPS output.data.download_url from <upload.json> and pass that URL as --video. Do not pass local paths, file:// URLs, or storageReference objects to postplus media transcribe.

• If the CLI returns a quote-confirmation challenge, run postplus quote confirm --json --challenge-file <challenge.json> and retry with the returned token.

<!-- BEGIN GENERATED EXECUTION EXAMPLE -->

postplus media transcribe transcription-video \
  --video <video> \
  --duration-seconds <duration-seconds> \
  --output <result.json>

<!-- END GENERATED EXECUTION EXAMPLE -->