byted-mediakit-editing
volcengine/mediakit-cli
Edit audio, video, and images with timeline trimming, filters, effects, transitions, and compositing.
What is byted-mediakit-editing?
A comprehensive media editing skill for composing audio, video, and image assets into finished pieces. Use it for timeline operations (trim, concat, speed/volume adjust), visual effects (filters, camera motion, transitions), and advanced compositing (overlay, subtitle, multi-panel stitching).
- Timeline trimming and concatenation of video and audio segments
- Speed and volume adjustment for video and audio
- Video filters and camera motion effects
- Transitions and fade-in/fade-out effects
- Crop, rotate, and flip video frames
- Image and subtitle overlay onto video
How to install byted-mediakit-editing
npx skills add https://github.com/volcengine/mediakit-cli --skill byted-mediakit-editing- mediakit-cli installed and available in PATH
- byted-mediakit-shared skill installed (required dependency)
- Input media files (video, audio, or image) accessible locally or via URL
How to use byted-mediakit-editing
- 1.Install the skill using: npx skills add https://github.com/volcengine/mediakit-cli --skill byted-mediakit-editing
- 2.Verify mediakit-cli is installed by running: mediakit-cli editing --help
- 3.Set environment variables: MEDIAKIT_SURFACE=skill and MEDIAKIT_RUNTIME to your agent name
- 4.Select the appropriate editing tool from the tool list based on your task (trim, concat, filter, etc.)
- 5.Provide required parameters (input file paths, time ranges, effect settings) and run the command
- 6.Retrieve the output media file from the specified output path
Use cases
- Create short-form content by trimming, concatenating, and adding transitions between video clips
- Add filters, camera motion, and subtitles to existing video footage for social media or marketing
- Extract audio from video, mix multiple audio tracks, and synchronize with video
- Convert a series of images into an animated video with transitions
- Generate text-based scrolling videos for novel excerpts, tutorials, or lyrics
- Video editors and content creators
- Social media and marketing teams
- Short-form video producers
- Audio engineers and sound designers
- Developers building media composition workflows
byted-mediakit-editing FAQ
This skill handles editing operations like trimming, concatenation, filtering, and compositing on existing media. Route pure image enhancement, background removal, OCR, or image watermarking to the image skill; route video quality enhancement, content analysis, subtitle extraction, or background removal to the video skill; route audio transcoding or speech separation to the audio skill.
Yes, use the apply-video-filter tool to add filters such as spring, sunset, vibrant, or skin-tone effects. Refer to the tool's reference documentation for the complete list of available filters and their parameters.
Use the concat-video tool to sequentially join multiple video files. You can optionally add transition effects at the concatenation points.
Yes, use add-image-to-video to overlay images (logos, watermarks) and add-subtitle-to-video to embed subtitles or text with custom styling into your video.
Output formats depend on the specific tool; refer to each tool's reference documentation for supported output formats. For example, mix-audio outputs MP3, and text-to-scrolling-video outputs 9:16 vertical video.
Full instructions (SKILL.md)
Source of truth, from volcengine/mediakit-cli.
name: byted-mediakit-editing version: "0.2.1" license: "MIT" description: "面向音频、视频或图片素材组成成片的编辑制作目标，适用于时间线裁剪与拼接、速度和音量调整、视频滤镜、运镜特效、转场、画面裁切旋转翻转、画面叠加、字幕压制、动图截取、淡入淡出、音视频提取与合流、音频混合、文字滚屏成片、图转视频以及多画面空间组合等操作。若用户要给视频添加滤镜效果，或对象和目标族已明确是对现有素材做剪辑、合成、叠加、混合或成片编排，但具体做法不确定，可先加载本 Skill 探索。" permissions:
- shell metadata: requires: bins: ["mediakit-cli"] cliHelp: "mediakit-cli editing --help" product: mediakit-cli/skills domain: editing capability_count: 23
editing MediaKit Skill
使用规则
- 先读取
../byted-mediakit-shared/SKILL.md，执行统一前置检查；该 Skill 缺失时停止并提示安装。 - 只从下表选择
editing域工具；相似能力按各工具“能力描述”和参数边界区分。 - 执行前按需读取对应 reference；参数与结果说明来自同一份已审核文案，完整机器合同以当前 CLI
--schema为准。 - 缺少必填参数、鉴权环境变量或真实输入资源时，向用户索取；通用可选字段只能透传用户明确提供的值，其他可选字段可由明确意图准确确定，但不得伪造。
- 执行时设置
MEDIAKIT_SURFACE=skill，指定调用来源是 Skill。 - 执行时把
MEDIAKIT_RUNTIME设置为当前 Agent 宿主，避免 CLI 无法可靠识别父级 Agent。
澄清与跨域路由
若只给出媒体类型而未说明要剪、合、叠、调、加滤镜还是分析，应先澄清。纯图像增强、抠图、OCR、图片水印或图片尺寸优化应路由到 image；视频画质增强、内容理解、从视频提取字幕、语音转字幕、字幕擦除、暗水印、人像或绿幕抠像等视频智能处理应路由到 video；音频转码、语音端点检测、人声背景分离等非剪辑目标应路由到 audio。滤镜效果包括春日/晚霞/鲜亮/白皙/食物等，具体参数以工具 reference 为准。
工具列表
| 工具 | 说明 | 支持模式 | 命令 | 参考 |
|---|---|---|---|---|
| add-image-to-video | 支持将指定图片（如 Logo、水印等）叠加到视频画面上。 | Cloud / Local | mediakit-cli editing add-image-to-video | reference/add-image-to-video.md |
| add-subtitle-to-video | 将字幕文件或文本内容按自定义样式压制到视频画面中，生成带内嵌字幕的新视频。 | Cloud / Local | mediakit-cli editing add-subtitle-to-video | reference/add-subtitle-to-video.md |
| adjust-audio-speed | 用于音频调速，可调整音频播放倍速，实现快放或慢放效果。 | Cloud / Local | mediakit-cli editing adjust-audio-speed | reference/adjust-audio-speed.md |
| adjust-video-speed | 用于视频调速，通过调整播放倍速产生快放或慢放效果。 | Cloud / Local | mediakit-cli editing adjust-video-speed | reference/adjust-video-speed.md |
| adjust-video-volume | 用于调整输入视频的音量大小，也可实现静音。 | Cloud / Local | mediakit-cli editing adjust-video-volume | reference/adjust-video-volume.md |
| apply-camera-motion | 对输入视频在指定时间段内添加一种运镜特效，常用于素材二次创作、营销片头、短剧动效等场景。 | Cloud | mediakit-cli editing apply-camera-motion | reference/apply-camera-motion.md |
| apply-video-filter | 为指定视频添加滤镜效果。 | Cloud | mediakit-cli editing apply-video-filter | reference/apply-video-filter.md |
| concat-audio | 拼接多个音频片段。 | Cloud / Local | mediakit-cli editing concat-audio | reference/concat-audio.md |
| concat-video | 将多个视频按顺序拼接成一个完整的视频文件，并支持在拼接处添加转场效果。 | Cloud / Local | mediakit-cli editing concat-video | reference/concat-video.md |
| crop-video | 按指定的矩形区域裁剪视频画面，裁剪结果仅保留指定的需要区域。 | Cloud | mediakit-cli editing crop-video | reference/crop-video.md |
| extract-animated-image | 从视频中按指定开始时间和结束时间截取一段画面，生成 GIF 或 WebP 动图，常用于制作封面动图、营销素材和短预览。 | Cloud | mediakit-cli editing extract-animated-image | reference/extract-animated-image.md |
| extract-audio | 从输入视频文件中分离音轨，生成独立的音频文件。 | Cloud / Local | mediakit-cli editing extract-audio | reference/extract-audio.md |
| fade-audio | 对输入音频的起止位置实现淡入或淡出效果，输出处理后的音频文件。 | Cloud / Local | mediakit-cli editing fade-audio | reference/fade-audio.md |
| fade-video-audio | 在片头或片尾对输入视频音轨执行淡入或淡出处理，用于弱化音轨突兀的起止，提升成片听感。输出处理后的视频文件。 | Cloud / Local | mediakit-cli editing fade-video-audio | reference/fade-video-audio.md |
| flip-video | 用于视频画面翻转，对指定视频进行上下或左右镜像翻转。 | Cloud / Local | mediakit-cli editing flip-video | reference/flip-video.md |
| image-to-video | 将多张图片按顺序组合成动态视频，可配置转场动画和镜头内动画；仅把现有图片做成带动效的视频，不支持根据参考图生成新的画面内容。 | Cloud | mediakit-cli editing image-to-video | reference/image-to-video.md |
| mix-audio | 将多个音频文件（如背景音乐、音效、人声）进行混音，生成一个新的音频文件。<br>处理耗时：处理耗时与视频时长正相关。视频时长越长，处理耗时越长。平均 RTF（处理耗时/原片时长）为 1。<br>输出音频的时长以最长的音频为准。<br>输出视频格式：mp3 | Cloud / Local | mediakit-cli editing mix-audio | reference/mix-audio.md |
| mux-audio-video | 可将输入的音频流与视频流合并成一个新的视频文件，并可选择保留或替换视频的原有音轨；当音视频时长不一致时，可进行对齐处理。 | Cloud / Local | mediakit-cli editing mux-audio-video | reference/mux-audio-video.md |
| rotate-video | 用于视频画面旋转，对指定视频进行整体旋转。 | Cloud | mediakit-cli editing rotate-video | reference/rotate-video.md |
| stitch-video | 将多个视频在空间上按水平或垂直方向拼接成一个完整画面，适用于多视角对比、画面组合等场景。 | Cloud | mediakit-cli editing stitch-video | reference/stitch-video.md |
| text-to-scrolling-video | 将指定文本内容转换为文字滚屏视频，输出视频为固定 9:16 竖版，常用于小说推文、内容讲解和歌词视频等场景。 | Cloud | mediakit-cli editing text-to-scrolling-video | reference/text-to-scrolling-video.md |
| trim-audio | 用于音频裁剪，按指定的开始时间和结束时间从输入音频中截取片段。 | Cloud / Local | mediakit-cli editing trim-audio | reference/trim-audio.md |
| trim-video | 用于视频裁剪，可按指定的开始和结束时间从输入视频截取片段。 | Cloud / Local | mediakit-cli editing trim-video | reference/trim-video.md |
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