video_util.dart
1.52 KB
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import 'package:ffmpeg_kit_flutter_new/ffmpeg_kit.dart';
import 'package:ffmpeg_kit_flutter_new/return_code.dart';
class VideoUtil {
///
/// 将视频格式转换为mp4
/// 转码的同时，进行压缩
///
static Future<bool> convertToMp4(String inputPath, String outputPath) async {
// final session = await FFmpegKit.execute(
// '-i "$inputPath" -c:v libx264 -c:a aac -strict experimental -movflags faststart -f mp4 "$outputPath"');
final session = await FFmpegKit.execute(
'-i "$inputPath" -c:v libx264 -crf 28 -c:a aac -b:a 128k -strict experimental -movflags faststart -f mp4 "$outputPath"');
final returnCode = await session.getReturnCode();
return ReturnCode.isSuccess(returnCode);
}
///
/// 通过 ffmpeg 压缩视频
///
static Future<bool> compressVideo(String inputPath, String outputPath, String quality) async {
// 使用CRF模式进行压缩，值范围0-51，建议值18-28
// 高质量: CRF 18-20
// 中等质量: CRF 23-26
// 低质量: CRF 28-32
int crf;
switch (quality) {
case 'low':
crf = 32;
break;
case 'middle':
crf = 26;
break;
case 'high':
crf = 20;
break;
default:
throw Exception('参数错误');
}
final session = await FFmpegKit.execute(
'-i "$inputPath" -c:v libx264 -crf $crf -c:a aac -b:a 128k -preset medium -movflags faststart "$outputPath"');
final returnCode = await session.getReturnCode();
return ReturnCode.isSuccess(returnCode);
}
}