Why does the skill use the +faststart flag?

The +faststart flag moves the video metadata to the beginning of the file, which is a requirement for social platforms to enable instant playback while the video is still buffering.

Which social media platforms are supported by this skill?

The skill includes specific presets for Instagram (Feed/Reels), TikTok, YouTube (Standard/Shorts), Twitter/X, Facebook, and LinkedIn.

How does it handle video quality and bitrates?

It analyzes the source file's bitrate and resolution, only re-encoding if the file exceeds platform limits or requires a format change to ensure maximum quality.

Does it support both cropping and letterboxing?

Yes, the skill can either perform a center-crop to fill the screen or add black bars (padding) to preserve the original frame, depending on your preference.

What software dependencies are required?

This skill requires FFmpeg and FFprobe to be installed on your system to analyze and transcode the video files.

Social Video Share

Name: Social Video Share
Author: gupsammy

bygupsammy

•

社交媒体管理

Optimizes and transcodes video files for social media platforms like TikTok, Instagram, and YouTube using FFmpeg.

This skill streamlines the process of preparing video content for various social media platforms by automatically handling aspect ratio conversions, resolution scaling, and bitrate optimization. It leverages FFmpeg to ensure videos meet the specific technical requirements for Reels, Shorts, and TikTok, including the crucial -movflags +faststart setting for seamless web playback. Whether you need to crop a 16:9 video to 9:16 portrait or adjust bitrates for LinkedIn, this skill provides precise, battle-tested presets for professional results.

主要功能

0152 GitHub stars

02Automated aspect ratio conversion via center cropping or letterboxing

03Source file analysis using ffprobe to avoid unnecessary re-encoding

04Metadata optimization for progressive web playback (-movflags +faststart)

05Optimized video and audio bitrate management for platform compliance

06Platform-specific presets for Instagram, TikTok, YouTube, X, and LinkedIn

使用场景

01Compressing high-bitrate master files to meet strict upload limits for Twitter or LinkedIn

02Standardizing video formats for a multi-platform social media marketing campaign

03Converting landscape screen recordings into 9:16 TikToks or YouTube Shorts

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add gupsammy/claudest share-social

For use in Claude.ai and ChatGPT

Download Skill