ai-video

name	ai-video
description	All in one video editing skill with video generation, audio dubbing, subtitles etc.

This skill is for video generation and editing. Every section is optional; use only what you need.

Prerequisites

Make sure the generate_video command is installed first with: which generate_video || uv tool install --default-index https://pypi.org/simple git+https://github.com/codescv/aigc_toolkit.

Video Generation

Run generate_videofor Video Generation.

Arguments:

• --aspect-ratio: Aspect ratio, {1:1,16:9,9:16,3:4,4:3} (default: use 9:16)
• --model: Model to use, e.g. veo-3.1-generate-001, veo-3.1-fast-generate-001 etc. If the model doesn't exist, search for what model id Google Veo supports.
• --image: the input image for image-to-video generation.
• --prompt: the prompt for video generation.
• --filename: the output filename.

Examples Usage

Generate text-to-video: --prompt "A cyberpunk city at night with neon lights" --filename "output.mp4"

Generate image-to-video (animate an image): --prompt "Make the character speak and smile" -i "/path/to/image.png" --filename "output.mp4"

Burning Subtitles

Run burn_subtitles instead of raw ffmpeg filters. Raw ffmpeg does NOT handle automatic line wrapping, which causes text to overflow. This script uses PingFang.ttc or Heiti by default for excellent CJK/Japanese support.

Arguments

• --video_path: Input video path
• --srt_path: Output SRT subtitle path
• --out_path: Output video path

Merge Video and Talking Audio

When making talking videos, it's useful to loop the video and merge the audio with this command:

ffmpeg -y -stream_loop -1 -i "<video_path>" -i "<speech_audio_path>" -c:v libx264 -crf 28 -preset fast -c:a aac -map 0:v:0 -map 1:a:0 -shortest -fflags +genpts "<output_video_path>"