byted-mediakit-editing

Original：🇨🇳 Chinese

Translated

Targeted at the editing and production of finished content composed of audio, video or image materials, it applies to operations such as timeline cropping and splicing, speed and volume adjustment, video filters, camera motion effects, transitions, frame cropping, rotation and flipping, frame overlay, subtitle embedding, animated image extraction, fade in/out, audio-video extraction and muxing, audio mixing, text scrolling video production, image-to-video conversion, and multi-frame spatial composition. If users want to add filter effects to videos, or if the target clearly involves editing, synthesizing, overlaying, mixing or arranging existing materials but the specific method is uncertain, this Skill can be loaded first for exploration.

446installs

Sourcevolcengine/mediakit-cli

Added on2026-09-03

NPX Install

npx skill4agent add volcengine/mediakit-cli byted-mediakit-editing

SKILL.md Content (Chinese)

View Translation Comparison →

editing MediaKit Skill

Usage Rules

First read
```
../byted-mediakit-shared/SKILL.md
```
and perform unified pre-checks; stop and prompt for installation if this Skill is missing.
Only select tools in the
```
editing
```
domain from the table below; distinguish similar capabilities based on each tool's "capability description" and parameter boundaries.
Read the corresponding reference as needed before execution; parameter and result descriptions come from the same reviewed document, and the complete machine contract is subject to the current CLI
```
--schema
```
.
Request information from users when required parameters, authentication environment variables or real input resources are missing; only pass through values explicitly provided by users for general optional fields, other optional fields can be accurately determined based on clear intent, but cannot be forged.
Set
```
MEDIAKIT_SURFACE=skill
```
during execution to specify that the call source is a Skill.
Set
```
MEDIAKIT_RUNTIME
```
to the current Agent host during execution to avoid the CLI failing to reliably identify the parent Agent.

Clarification and Cross-Domain Routing

If only the media type is provided without specifying whether to cut, combine, overlay, adjust, add filters or analyze, clarification should be made first. Pure image enhancement, matting, OCR, image watermarking or image size optimization should be routed to the image domain; video intelligent processing such as video quality enhancement, content understanding, subtitle extraction from video, speech-to-subtitle, subtitle erasure, invisible watermarking, portrait or green screen matting should be routed to the video domain; non-editing targets such as audio transcoding, speech endpoint detection, vocal and background separation should be routed to the audio domain. Filter effects include spring/sunset/vibrant/fair/food, etc., and specific parameters are subject to tool references.

Tool List

Tool	Description	Supported Mode	Command	Reference
add-image-to-video	Supports overlaying specified images (such as logos, watermarks, etc.) onto video frames.	Cloud / Local	`mediakit-cli editing add-image-to-video`	reference/add-image-to-video.md
add-subtitle-to-video	Embeds subtitle files or text content into video frames with custom styles to generate a new video with embedded subtitles.	Cloud / Local	`mediakit-cli editing add-subtitle-to-video`	reference/add-subtitle-to-video.md
adjust-audio-speed	Used for audio speed adjustment, which can change the playback speed of audio to achieve fast or slow playback effects.	Cloud / Local	`mediakit-cli editing adjust-audio-speed`	reference/adjust-audio-speed.md
adjust-video-speed	Used for video speed adjustment, which produces fast or slow playback effects by changing the playback speed.	Cloud / Local	`mediakit-cli editing adjust-video-speed`	reference/adjust-video-speed.md
adjust-video-volume	Used to adjust the volume of the input video, and can also achieve mute effect.	Cloud / Local	`mediakit-cli editing adjust-video-volume`	reference/adjust-video-volume.md
apply-camera-motion	Adds a camera motion effect to the input video within a specified time period, commonly used in scenarios such as material re-creation, marketing openings, and short drama animations.	Cloud	`mediakit-cli editing apply-camera-motion`	reference/apply-camera-motion.md
apply-video-filter	Adds filter effects to the specified video.	Cloud	`mediakit-cli editing apply-video-filter`	reference/apply-video-filter.md
concat-audio	Splices multiple audio clips together.	Cloud / Local	`mediakit-cli editing concat-audio`	reference/concat-audio.md
concat-video	Splices multiple videos in sequence into a complete video file, and supports adding transition effects at the splicing points.	Cloud / Local	`mediakit-cli editing concat-video`	reference/concat-video.md
crop-video	Crops the video frame according to the specified rectangular area, and only retains the specified required area in the cropped result.	Cloud	`mediakit-cli editing crop-video`	reference/crop-video.md
extract-animated-image	Captures a segment of frames from the video according to the specified start and end time to generate GIF or WebP animated images, commonly used for making cover animations, marketing materials and short previews.	Cloud	`mediakit-cli editing extract-animated-image`	reference/extract-animated-image.md
extract-audio	Separates the audio track from the input video file to generate an independent audio file.	Cloud / Local	`mediakit-cli editing extract-audio`	reference/extract-audio.md
fade-audio	Implements fade-in or fade-out effects at the start and end positions of the input audio, and outputs the processed audio file.	Cloud / Local	`mediakit-cli editing fade-audio`	reference/fade-audio.md
fade-video-audio	Performs fade-in or fade-out processing on the audio track of the input video at the opening or ending to weaken the abrupt start and end of the audio track and improve the listening experience of the finished video. Outputs the processed video file.	Cloud / Local	`mediakit-cli editing fade-video-audio`	reference/fade-video-audio.md
flip-video	Used for video frame flipping, which performs vertical or horizontal mirror flipping on the specified video.	Cloud / Local	`mediakit-cli editing flip-video`	reference/flip-video.md
image-to-video	Combines multiple images in sequence into a dynamic video, and supports configuring transition animations and in-lens animations; only converts existing images into videos with motion effects, does not support generating new frame content based on reference images.	Cloud	`mediakit-cli editing image-to-video`	reference/image-to-video.md
mix-audio	Mixes multiple audio files (such as background music, sound effects, human voices) to generate a new audio file.<br>Processing time: Processing time is positively correlated with video duration. The longer the video duration, the longer the processing time. The average RTF (processing time/original video duration) is 1.<br>The duration of the output audio is based on the longest audio.<br>Output audio format: mp3	Cloud / Local	`mediakit-cli editing mix-audio`	reference/mix-audio.md
mux-audio-video	Can merge the input audio stream and video stream into a new video file, and can choose to retain or replace the original audio track of the video; when the audio and video durations are inconsistent, alignment processing can be performed.	Cloud / Local	`mediakit-cli editing mux-audio-video`	reference/mux-audio-video.md
rotate-video	Used for video frame rotation, which performs overall rotation on the specified video.	Cloud	`mediakit-cli editing rotate-video`	reference/rotate-video.md
stitch-video	Splices multiple videos horizontally or vertically in space into a complete frame, suitable for scenarios such as multi-angle comparison and frame composition.	Cloud	`mediakit-cli editing stitch-video`	reference/stitch-video.md
text-to-scrolling-video	Converts specified text content into a text scrolling video, the output video is fixed 9:16 vertical format, commonly used in scenarios such as novel promotion, content explanation and lyric videos.	Cloud	`mediakit-cli editing text-to-scrolling-video`	reference/text-to-scrolling-video.md
trim-audio	Used for audio cropping, which captures a segment from the input audio according to the specified start and end time.	Cloud / Local	`mediakit-cli editing trim-audio`	reference/trim-audio.md
trim-video	Used for video cropping, which captures a segment from the input video according to the specified start and end time.	Cloud / Local	`mediakit-cli editing trim-video`	reference/trim-video.md