MediaRuntime Python SDK

Official synchronous Python client for the MediaRuntime asynchronous media API.

Status: production/stable 1.1.1, published on PyPI with GitHub trusted publishing.

The documented 1.x public API follows semantic versioning. Breaking changes to public imports, arguments, exceptions, or documented response projections require a new major version; compatible fields and capabilities may be added in minor releases.

Install

pip install mediaruntime

Set MEDIARUNTIME_API_KEY; the production API URL is built in. Pass the server-held key explicitly when you want the credential source to be visible in application code.

import os

from mediaruntime import MediaRuntime

media = MediaRuntime(api_key=os.environ["MEDIARUNTIME_API_KEY"])
job = media.jobs.create(
    source="./video.mp4",
    outputs=["video.web"],
    idempotency_key="video:vid_123:v1",
)

# Polling is convenient for scripts, tests, and first-run verification.
result = job.wait(timeout=300)
bundle_url = result.bundle.get("download_url")
if result.status != "COMPLETED" or not bundle_url:
    raise RuntimeError(f"MediaRuntime job ended with {result.status}")
print(bundle_url)

bundle_url is a short-lived URL for the canonical ZIP containing every requested deliverable. One job can place a video, poster, subtitles, multiple renditions, or a complete HLS directory tree in that bundle; the SDK does not model those files as separate delivery URLs.

In production, persist job.id and complete the workflow from the signed terminal webhook sent to the destination configured under Account → Webhooks. Redeem delivery.bundle.download.url from that event for the same ZIP. A job submission does not supply or override the webhook URL.

MediaRuntime() without arguments is equivalent: it reads MEDIARUNTIME_API_KEY automatically. Never put the key in frontend code or commit its literal value.

Aliases are frozen gateway contracts: video.web, video.streaming, video.social, audio.web, audio.transcription, and image.web. The gateway materializes them before validation, estimation, billing, and persistence. Explicit { "type": ..., "preset": ... } output dictionaries remain supported and may be mixed with aliases.

HTTP(S) and gs:// sources are submitted directly. Other strings and pathlib.Path instances are treated as local files and uploaded through MediaRuntime's signed upload flow.

Batch inputs

Use source on every batch item. Each value accepts the same HTTP(S), gs://, local-path, or pathlib.Path forms as a single job; the SDK uploads local files before submission.

batch = media.jobs.create(
    inputs=[
        {"source": "https://cdn.example.com/a.mp4", "input_id": "asset-a"},
        {"source": "./b.mp4", "input_id": "asset-b", "metadata": {"position": 1}},
    ],
    outputs=["video.web"],
)

Moderation

Choose observational report moderation or fail-closed block enforcement when creating a visual-media job, then retrieve its result after completion. In block mode, review or block ends the job as REJECTED before transcoding; allow continues.

job = media.jobs.create(
    source="https://cdn.example.com/photo.jpg",
    outputs=["image.web"],
    moderation={
        "enabled": True,
        "mode": "report",
        "checks": ["sexual", "violence", "dangerous"],
    },
    idempotency_key="image:photo_123:v1",
)

result = job.wait()
moderation = media.jobs.get_moderation(result.id)
print(result.status, moderation.verdict, moderation.flagged_checks)

Explicit output mappings support MPEG-DASH and VP9/WebM:

outputs = [
    {"type": "dash", "preset": "dash_ladder_v1"},
    {"type": "webm", "preset": "webm_vp9_1080p"},
]

media.capabilities.retrieve() includes the gateway's full preset catalog and feature contracts, including smart-crop semantics and moderation enforcement modes.

Verify webhooks

event = media.webhooks.verify(raw_body, request.headers)
print(event.id, event.job_id, event.status)

media.webhooks.flask(handler), fastapi(handler), and django(handler) provide optional framework adapters without making those frameworks package dependencies. Persist and deduplicate event.id in your own datastore before acknowledging a delivery.

Error handling

Every gateway response carries X-Request-Id. API exceptions expose the same correlation ID together with the gateway-owned code and retry classification:

from mediaruntime import MediaRuntimeAPIError

try:
    media.jobs.get("job_123")
except MediaRuntimeAPIError as error:
    print(error.code, error.status, error.retryable, error.request_id, error.details)

response_body retains the complete compatibility response. Treat retryable as a transport classification. Every jobs.create() call uses one opaque, invocation-scoped Idempotency-Key for its own bounded retries, including a response lost after gateway acceptance. That generated key exists only for the live call; a later call receives a new one. Continue to pass a stable idempotency_key when the same business operation may be attempted after a process restart, queue redelivery, or from another machine.

See the software design document for boundaries, retry safety, security behavior, compatibility, and release gates.