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This commit is contained in:
xiangbing 2025-08-12 22:36:44 +08:00
parent dd2827dc71
commit e2a75a64bd
2 changed files with 119 additions and 35 deletions
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99
Services/Video/VideoProcess.cs
View File

@ -1,5 +1,6 @@
using FFMpegCore;
using FFMpegCore.Enums;
using Standard;
using System;
using System.IO;
using System.Threading.Tasks;
@ -21,7 +22,8 @@ namespace VideoConcat.Services.Video
{
if (!File.Exists(inputPath))
return false;
// 创建临时目录
string tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
try
{
// 1. 获取视频信息
@ -35,8 +37,6 @@ namespace VideoConcat.Services.Video
bool isHevc = videoStream.CodecName == "hevc";
// 2. 创建临时目录
string tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
Directory.CreateDirectory(tempDir);
if (isHevc)
@ -45,19 +45,19 @@ namespace VideoConcat.Services.Video
{
// 临时文件路径
string videoConvert = Path.Combine(tempDir, "convert.mp4");
string videoConvert = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
await FFMpegArguments.FromFileInput(inputPath)
.OutputToFile(videoConvert, true, opt => // 设置输出格式
opt.WithVideoCodec("libx264")
).ProcessAsynchronously();
mediaInfo = await FFProbe.AnalyseAsync(videoConvert);
mediaInfo = await FFProbe.AnalyseAsync(videoConvert);
inputPath = videoConvert;
}
catch (Exception)
{
File.Delete(outputPath);
throw new Exception("转换失败！");
}
}
@ -65,27 +65,72 @@ namespace VideoConcat.Services.Video
var totalDuration = mediaInfo.Duration.TotalSeconds;
// 计算帧时间参数
double frameRate = videoStream.FrameRate;
double frameDuration = 1.0 / frameRate; // 一帧时长（秒）
double frameDuration = Math.Round(1.0 / frameRate, 6); // 一帧时长（秒）
int totalFram = (int)(totalDuration * frameRate);
// 2. 随机生成要删除的帧的时间点（避开最后一帧，防止越界）
var random = new Random();
var randomFrame = random.Next(20, totalFram - 10);
double frameTime = (randomFrame - 1) * frameDuration; // 目标帧开始时间
double nextFrameTime = frameTime + frameDuration; // 下一帧开始时间
double frameTime = Math.Round((randomFrame - 1) * frameDuration,6); // 目标帧开始时间
double nextFrameTime = Math.Round(randomFrame * frameDuration,6); // 下一帧开始时间
// 临时文件路径
string videoPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
string videoPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
string audioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
string videoNoaudioPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
string finalyPath = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
string audioPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
string audioPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.aac");
// 分离视频流（不含音频）
await FFMpegArguments
.FromFileInput(inputPath)
.OutputToFile(videoNoaudioPath, true, opt => opt.WithCustomArgument("-an -c:v copy"))
.ProcessAsynchronously();
if (!File.Exists(videoNoaudioPath))
return false;
// 分离音频流（不含视频）（如有音频）
if (mediaInfo.PrimaryAudioStream != null)
{
await FFMpegArguments
.FromFileInput(inputPath)
.OutputToFile(audioPath, true, opt => opt.WithCustomArgument("-vn -c:a copy"))
.ProcessAsynchronously();
if (!File.Exists(audioPath))
return false;
}
inputPath = videoNoaudioPath;
// 临时文件路径
string videoPart1 = Path.Combine(tempDir, "video_part1.mp4");
string videoPart2 = Path.Combine(tempDir, "video_part2.mp4");
bool hasSubVideo1 = SubVideo(inputPath, videoPart1, 0, frameTime);
bool hasSubVideo2 = SubVideo(inputPath, videoPart2, nextFrameTime, totalDuration);
if (hasSubVideo1 && hasSubVideo2)
if (!hasSubVideo1 || !hasSubVideo2)
{
return JoinVideo(outputPath, [videoPart1, videoPart2]);
return false;
}
return false;
bool isJoinSuccess = JoinVideo(finalyPath, [videoPart1, videoPart2]);
if (!isJoinSuccess)
{
return false;
}
return await FFMpegArguments.FromFileInput(finalyPath)
.AddFileInput(audioPath)
.OutputToFile(outputPath, true, opt =>
opt.WithCustomArgument("-c copy -shortest -y"))
.ProcessAsynchronously();
}
catch (Exception ex)
{
@ -93,17 +138,37 @@ namespace VideoConcat.Services.Video
Console.WriteLine($"操作失败: {ex.Message}");
return false;
}
finally
{
string[] files = Directory.GetFiles(tempDir);
foreach (string file in files)
{
File.Delete(file);
}
File.Delete(tempDir);
}
}
public static bool SubVideo(string inputPath, string outputPath, Double startSec, Double endSec)
{
return FFMpeg.SubVideo(inputPath, outputPath, TimeSpan.FromSeconds(startSec), TimeSpan.FromSeconds(endSec));
return FFMpegArguments
.FromFileInput(inputPath, true, options => options.Seek(TimeSpan.FromSeconds(startSec)).EndSeek(TimeSpan.FromSeconds(endSec)))
.OutputToFile(outputPath, true, options => options.CopyChannel().WithCustomArgument("-an"))
.ProcessSynchronously();
}
public static bool SubAudio(string inputPath, string outputPath, Double startSec, Double endSec)
{
return FFMpegArguments
.FromFileInput(inputPath, true, options => options.Seek(TimeSpan.FromSeconds(startSec)).EndSeek(TimeSpan.FromSeconds(endSec)))
.OutputToFile(outputPath, true, options => options.CopyChannel())
.ProcessSynchronously();
}
public static bool JoinVideo(string outPutPath, string[] videoParts)
{
return FFMpeg.Join(outPutPath, videoParts);
}
}
}

55
ViewModels/ExtractWindowViewModel.cs
View File

@ -1,15 +1,16 @@
using System.Windows.Input;
using VideoConcat.Models;
using MessageBox = System.Windows.MessageBox;
using VideoConcat.Common.Tools;
using System.IO;
using Microsoft.Expression.Drawing.Core;
using FFMpegCore;
using FFMpegCore;
using FFMpegCore.Enums;
using static VideoConcat.Models.VideoModel;
using System.Windows.Threading;
using Microsoft.Expression.Drawing.Core;
using System.IO;
using System.Windows;
using System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Threading;
using VideoConcat.Common.Tools;
using VideoConcat.Models;
using VideoConcat.Services.Video;
using static VideoConcat.Models.VideoModel;
using MessageBox = System.Windows.MessageBox;
namespace VideoConcat.ViewModels
{
@ -58,20 +59,38 @@ namespace VideoConcat.ViewModels
DoExcue = obj =>
{
ExtractWindowModel.HelpInfo = "";
Task.Run(action: () =>
SemaphoreSlim semaphore = new(10); // Limit to 3 threads
List<Task> _tasks = [];
ExtractWindowModel.videos.ForEach(async (video) =>
{
ExtractWindowModel.videos.ForEach(async (video) =>
await semaphore.WaitAsync(); // Wait when more than 3 threads are running
var _task = Task.Run(async () =>
{
// 实例化并调用
var remover = new VideoProcess();
// 删除4秒处的帧（需根据实际帧位置调整）
string _tmpPath = Path.GetDirectoryName(video) ?? "";
string _tmpFileName = $"抽帧视频-{Path.GetFileName(video)}";
await VideoProcess.RemoveFrameRandomeAsync(video, $"{_tmpPath}\\{_tmpFileName}");
try
{
// 实例化并调用
var remover = new VideoProcess();
// 删除4秒处的帧（需根据实际帧位置调整）
string _tmpPath = Path.GetDirectoryName(video) ?? "";
string _tmpFileName = $"抽帧视频-{Path.GetFileName(video)}";
await VideoProcess.RemoveFrameRandomeAsync(video, $"{_tmpPath}\\{_tmpFileName}");
}
finally
{
semaphore.Release(); // Work is done, signal to semaphore that more work is possible
}
});
_tasks.Add(_task);
});
ExtractWindowModel.HelpInfo = "全部完成!";
Task.WhenAll(_tasks).ContinueWith((task) =>
{
ExtractWindowModel.HelpInfo = "全部完成!";
});
}
}
};