VOD_video enhancement

Uploads video/audio to a BytePlus VOD space (from a local file or a public URL) and returns a vid://vxxxx reference. Additionally provides AI-based comprehensive quality restoration that removes compression artifacts, noise, and scratches from ingested videos, improving overall clarity and color rendition.

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Prerequisites

• Environment variables (required, can be configured via a .env file in the working directory — the scripts will load it automatically):
  • BYTEPLUS_ACCESSKEY — BytePlus Access Key
  • BYTEPLUS_SECRETKEY — BytePlus Secret Key
  • VOD_SPACE_NAME — VOD space name
• Execution: examples use uv run python ... (if the host environment can run Python directly, python scripts/... also works).

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Workflow Overview

Upload pipeline (local file):
  [S1_APPLY]  ApplyUploadInfo → returns TOS upload address + SessionKey
  [S2_TOS]    PUT file to TOS (direct or chunked)
  [S3_COMMIT] CommitUploadInfo → returns Vid
  Output: { Vid, Source, PlayURL, FileName, SpaceName, SourceUrl }

Upload pipeline (URL):
  [S1_UPLOAD] Submit URL upload job (UploadMediaByUrl) → returns JobId
  [S2_POLL]   Poll QueryUploadTaskInfo → returns Vid
  Output: { Vid, Source, PlayURL, FileName, SpaceName, SourceUrl, JobId }

Quality restoration pipeline:
  [S3_ENHANCE] Submit restoration job (StartExecution/enhanceVideo) → returns RunId
  [S4_POLL]    Poll GetExecution → returns the restored file
  Output: { Status, SpaceName, VideoUrls[{ FileId, DirectUrl, Source }] }

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Quick Self-Check (recommended)

Before running any script, confirm the following (avoid unrelated Python/uv version checks):

• .env or environment variables contain:
  • BYTEPLUS_ACCESSKEY + BYTEPLUS_SECRETKEY
  • VOD_SPACE_NAME

Once verified, pick the corresponding pipeline based on user intent:

User intent	Pipeline	Entry script
Upload video to VOD	Upload pipeline	scripts/upload.py
Quality restoration / denoise / remove compression artifacts	Quality restoration pipeline	scripts/quality_enhance.py

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S1_UPLOAD & S2_POLL: Upload and Obtain Vid

Calling Convention

Run from the Skill root directory (byted-byteplus-vod-video-enhancement/):

# Local file upload (synchronous — returns Vid when complete)
uv run python scripts/upload.py "/path/to/video.mp4" [space_name]

# URL upload (automatically polls until a Vid is returned)
uv run python scripts/upload.py "<https://example.com/video.mp4>" [space_name]

# Example: specifying the space
uv run python scripts/upload.py "https://example.com/sample.mp4" my_space

• First argument: either a local file path or a public http:// / https:// link. The script auto-detects which mode to use.
• Second argument (optional): the VOD space name; when omitted it is read from the environment variable VOD_SPACE_NAME.
• The file / URL must carry a file extension (such as .mp4, .mov, .mp3), otherwise an error is raised.

Upload Flow

Local file upload (synchronous, three-step):

1. Call ApplyUploadInfo (API Version: 2023-01-01) to obtain the TOS upload address, authentication token, and SessionKey.
2. PUT the file to TOS (direct upload for files < 20 MiB, chunked upload otherwise).
3. Call CommitUploadInfo (API Version: 2023-01-01) with the SessionKey; returns the Vid.

URL upload (two-phase asynchronous):

1. Call UploadMediaByUrl (API Version: 2023-01-01) to submit the pull job; returns a JobId.
2. Poll QueryUploadTaskInfo until the job completes, with a maximum wait of 30 minutes (360 × 5s).
3. Once the job is complete, return the Vid.

Output Format

On success, a JSON line is printed to stdout:

{
  "Vid": "v0d123abc",
  "Source": "vid://v0d123abc",
  "PlayURL": "https://example.cdn.com/xxx.m3u8",
  "PosterUri": "",
  "FileName": "uuid-filename.mp4",
  "SpaceName": "my_space",
  "SourceUrl": "https://example.com/video.mp4",
  "JobId": "job-xxx"
}

• Source: a vid://-formatted reference that can be passed directly to follow-up skills such as byted-mediakit.
• The host agent should save the Source field for use in subsequent processing steps.

Timeout Handling

If polling times out (30 minutes), the output is:

{
  "error": "Polling timed out (360 attempts × 5s); the URL pull upload is still processing",
  "resume_hint": {
    "description": "The URL upload has not finished yet; retry with the command below",
    "command": "uv run python scripts/upload.py \"<original URL>\" [space_name]"
  },
  "JobIds": "job-xxx",
  "State": "running"
}

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S3_ENHANCE & S4_POLL: AI Comprehensive Quality Restoration

Calling Convention

Run from the Skill root directory (byted-byteplus-vod-video-enhancement/):

# Submit after the user has explicitly selected both config and repair_style
uv run python scripts/quality_enhance.py '{"type":"Vid","video":"v0310abc","config":"common","repair_style":1}'

# Example: a vid:// prefix is also accepted (the script strips it automatically)
uv run python scripts/quality_enhance.py '{"type":"Vid","video":"vid://v0d225gxxx","config":"common","repair_style":1}' production_space

# Optional target output resolution (omit res for source resolution)
uv run python scripts/quality_enhance.py '{"type":"Vid","video":"v0310abc","config":"common","repair_style":1,"res":"1080p"}'

# Optional color depth (Pro only; online output supports 8, 10, 12, or 16 bit)
uv run python scripts/quality_enhance.py '{"type":"Vid","video":"v0310abc","config":"common","repair_style":2,"bit_depth":10}'

# 16-bit FFV1 output (input video must be 40 seconds or shorter)
uv run python scripts/quality_enhance.py '{"type":"Vid","video":"v0310abc","config":"common","repair_style":2,"bit_depth":16}'

# Pass parameters via @file.json (recommended — avoids shell escaping issues)
uv run python scripts/quality_enhance.py @params.json

# Resume polling after a timeout
uv run python scripts/poll_execution.py '<RunId>' [space_name]

Parameter Reference

Parameter	Type	Required	Description
type	string	✅	Vid (video ID) or DirectUrl (VOD storage FileName)
video	string	✅	The video Vid or FileName (a vid:// prefix is accepted and automatically stripped)
config	string	✅	VolcMoeEnhanceParam Config; one of common, ugc, short_series, aigc, old_film. If the user explicitly asks for defaults, use common.
repair_style	integer	✅	VolcMoeEnhanceParam VideoStrategy.RepairStyle; 1 = Standard, 2 = Pro. If the user explicitly asks for defaults, use 1.
res	string	no	Optional MoeEnhance.Target.Res — target output resolution. Omit or leave empty for source resolution (no upscaling target). Allowed: 240p, 360p, 480p, 540p, 720p, 1080p, 2k, 4k.
bit_depth	integer	no	Optional MoeEnhance.Target.BitDepth; Pro tier only. Online output supports 8, 10, 12, or 16. Omit it to use the API default, 8. 8 uses H.264; 10 and 12 use H.265; 16 uses lossless FFV1.

Before quality restoration, you MUST ask the user to choose both required enhancement parameters if either config or repair_style is missing. Do not silently use defaults. Only use config=common and repair_style=1 when the user explicitly asks for default/recommended settings. When asking the user, use plain product language only; do not show internal parameter names or values such as config=..., repair_style=..., common, or short_series in the question text or option labels.

Suggested prompt:

Video enhancement may take some time. Choosing the right template usually gives better results.
What type of video is it?

1. General video
2. Short video / UGC
3. Short drama / short series
4. AI-generated content
5. Old film / classic footage that needs restoration

Which video enhancement tier would you like to use?

1. Standard: balanced visual improvement and processing speed
2. Pro: cinematic-grade restoration with longer processing time; allowlist access may be required

What output resolution do you want? (optional)

• Keep the same as the source video (recommended default — do not pass res)
• Or choose a target: 240p, 360p, 480p, 540p, 720p, 1080p, 2K, 4K

If you chose Pro, what color depth do you want? (optional)

• 8-bit (API default, H.264, broad compatibility)
• 10-bit (recommended for premium delivery and HDR workflows, H.265)
• 12-bit (professional post-production, H.265; requires compatible professional tools and displays)
• 16-bit (lossless FFV1; source video must be 40 seconds or shorter; processed serially and may take longer)

If the user wants source / original resolution, omit res from the JSON (or use an empty string). Only set res when they explicitly pick a target resolution.

If the user asks for a default recommendation, use config=common and repair_style=1 with no res or bit_depth. Otherwise, wait for the user's selections before running scripts/quality_enhance.py.

Internal mapping: General video -> config=common; Short video / UGC -> config=ugc; Short drama / short series -> config=short_series; AI-generated content -> config=aigc; Old film / classic footage -> config=old_film; Standard -> repair_style=1; Pro -> repair_style=2; source resolution -> omit res; 240p–4K -> res as listed in the parameter table (2k / 4k in JSON); selected color depth -> bit_depth=8, 10, 12, or 16. Do not expose these parameter names or values in the question unless the user asks for implementation details.

Color-depth usage limits:

• bit_depth can be submitted only with Pro (repair_style=2) and is part of the advanced enhancement output settings.
• The online API supports 8-bit, 10-bit, 12-bit, and 16-bit output.
• Before submitting 16-bit, confirm that the input video is 40 seconds or shorter. The script cannot infer source duration from the current arguments, so do not submit until this requirement is confirmed.
• 16-bit uses FFV1 lossless encoding, so do not configure a target bitrate. This skill does not expose or send a target bitrate.
• 16-bit tasks are processed serially, one at a time. Set the expectation that processing may take longer and wait for the current task to finish before submitting another 16-bit task.
• 10-bit and 12-bit output uses H.265. For 12-bit review, ordinary players and SDR operating-system pipelines may render incorrectly; recommend a color-managed professional tool and monitor. The documentation recommends MOV with H.265 yuv444p12le for 12-bit delivery because conventional MP4/H.264/H.265 workflows are generally limited to 8-bit or 10-bit and may dither or truncate higher precision.
• Ordinary players and SDR rendering pipelines may also render 16-bit incorrectly. Review 16-bit output in a color-managed professional tool on a compatible monitor, and use high-throughput storage such as a dedicated NVMe SSD for large lossless assets.

Special handling for Pro: if the user chooses repair_style=2 and the StartExecution/GetExecution response returns HTTP status 403, or any error message contains Permission denied, explain that Pro is only available to users on the allowlist. Ask the user to submit a ticket to apply: https://console.byteplus.com/workorder/create

Output Format

On success, a JSON line is printed to stdout:

{
  "Status": "Success",
  "SpaceName": "my_space",
  "VideoUrls": [
    {
      "FileId": "xxx",
      "DirectUrl": "path/to/output.mp4",
      "Source": "directurl://path/to/output.mp4",
      "Url": "https://example.cdn.com/path/to/output.mp4?auth_key=..."
    }
  ],
  "AudioUrls": [],
  "Texts": []
}

• VideoUrls[0].Url: a directly accessible/downloadable URL (the script signs it based on the space's domain/auth rules).
• VideoUrls[0].Source (directurl://...) can be passed directly to downstream skills.

Timeout Handling

If polling times out (30 minutes), the output is:

{
  "error": "Polling timed out (360 attempts × 5s); the job is still processing",
  "resume_hint": {
    "description": "The job has not finished yet; resume polling with the command below",
    "command": "uv run python scripts/poll_execution.py '<RunId>' [space_name]"
  }
}

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Environment Variables

Name	Description	Required
BYTEPLUS_ACCESSKEY	BytePlus Access Key	Yes
BYTEPLUS_SECRETKEY	BytePlus Secret Key	Yes
VOD_SPACE_NAME	VOD space name	Yes (or via CLI argument)
VOD_POLL_INTERVAL	Polling interval (seconds, default 5)	No
VOD_POLL_MAX	Maximum polling attempts (default 360)	No
VOD_URL_EXPIRE_MINUTES	Signed URL expiration (minutes, default 60)	No
VOD_PLAY_DOMAIN	Force the use of a specific play domain (optional, highest priority)	No

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Error Output Format

All errors share the same format:

{"error": "error description"}

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References

• BytePlus VOD Python SDK
• Quality restoration parameter reference
• API: ApplyUploadInfo (Version: 2023-01-01)
• API: CommitUploadInfo (Version: 2023-01-01)
• API: UploadMediaByUrl (Version: 2023-01-01)
• API: QueryUploadTaskInfo (Version: 2023-01-01)
• API: StartExecution (Version: 2025-07-01)
• API: GetExecution (Version: 2025-07-01)