视频压缩

复制import subprocess
import os

# 使用 FFmpeg 压缩视频：CRF 模式 + 调整分辨率
input_path = "input.mp4"
output_path = "output_crf28_720p.mp4"

# CRF 值范围 0-51，28 为良好平衡点；分辨率设为 1280x720
cmd = [
    "ffmpeg",
    "-i", input_path,
    "-c:v", "libx264",
    "-crf", "28",
    "-vf", "scale=1280:720",
    "-c:a", "aac",
    "-b:a", "128k",
    "-y",  # 覆盖输出文件
    output_path
]

try:
    subprocess.run(cmd, check=True, capture_output=True, text=True)
    print(f"压缩完成：{output_path}")
except subprocess.CalledProcessError as e:
    print(f"FFmpeg 错误：{e.stderr}")

复制package main

import (
	"fmt"
	"os/exec"
)

func main() {
	// 使用 FFmpeg 压缩视频：指定码率 1Mbps + 分辨率 1280x720
	input := "input.mp4"
	output := "output_bitrate1m_720p.mp4"

	args := []string{
		"-i", input,
		"-c:v", "libx264",
		"-b:v", "1M",
		"-vf", "scale=1280:720",
		"-c:a", "aac",
		"-b:a", "128k",
		"-y",
		output,
	}

	cmd := exec.Command("ffmpeg", args...)
	if err := cmd.Run(); err != nil {
		fmt.Printf("压缩失败：%v\n", err)
		return
	}
	fmt.Printf("压缩完成：%s\n", output)
}

复制const { execSync } = require('child_process');
const path = require('path');

// 使用 FFmpeg 压缩视频：CRF 模式 + 指定分辨率
const input = 'input.mp4';
const output = 'output_crf23_1080p.mp4';

const cmd = [
  'ffmpeg',
  '-i', input,
  '-c:v', 'libx264',
  '-crf', '23',
  '-vf', 'scale=1920:1080',
  '-c:a', 'aac',
  '-b:a', '128k',
  '-y',
  output
].join(' ');

try {
  execSync(cmd, { stdio: 'inherit' });
  console.log(`压缩完成：${output}`);
} catch (err) {
  console.error('FFmpeg 执行失败:', err.message);
}