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This commit is contained in:
xiangbing 2025-08-12 23:11:03 +08:00
parent e2a75a64bd
commit da5f023390
2 changed files with 114 additions and 57 deletions
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132
Services/Video/VideoProcess.cs
View File

@ -27,7 +27,7 @@ namespace VideoConcat.Services.Video
try
{
// 1. 获取视频信息
var mediaInfo = await FFProbe.AnalyseAsync(inputPath);
IMediaAnalysis mediaInfo = await FFProbe.AnalyseAsync(inputPath);
var videoStream = mediaInfo.PrimaryVideoStream;
if (videoStream == null)
{
@ -60,9 +60,97 @@ namespace VideoConcat.Services.Video
throw new Exception("转换失败！");
}
}
// 1. 获取视频信息
mediaInfo = await FFProbe.AnalyseAsync(inputPath);
videoStream = mediaInfo.PrimaryVideoStream;
if (videoStream == null)
{
Console.WriteLine("没有找到视频流");
return false;
}
// 视频总时长（秒）
double totalDuration = mediaInfo.Duration.TotalSeconds;
double frameRate = videoStream.FrameRate;
double frameDuration = Math.Round(1.0 / frameRate, 6); // 一帧时长（秒）
int totalFram = (int)(totalDuration * frameRate);
var random = new Random();
var randomFrame = random.Next(1, (int)totalDuration);
string videoPart1 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
string videoPart2 = Path.Combine(tempDir, $"{Guid.NewGuid()}.mp4");
bool hasSubVideo1 = SubVideo(inputPath, videoPart1, 0, randomFrame-0.016);
bool hasSubVideo2 = SubVideo(inputPath, videoPart2, randomFrame, totalDuration);
if (!hasSubVideo1 || !hasSubVideo2)
{
return false;
}
bool isJoinSuccess = JoinVideo(outputPath, [videoPart1, videoPart2]);
if (!isJoinSuccess)
{
return false;
}
return false;
}
catch (Exception ex)
{
LogUtils.Error("抽帧失败", ex);
Console.WriteLine($"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 FFMpegArguments
.FromFileInput(inputPath, true, options => options.Seek(TimeSpan.FromSeconds(startSec)).EndSeek(TimeSpan.FromSeconds(endSec)))
.OutputToFile(outputPath, true, options => options.CopyChannel()) //.WithCustomArgument("-an") 去掉音频
.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);
}
public async Task<bool> ProcessVideo(string inputPath,string outputPath, string tempDir)
{
// 1. 获取视频信息
IMediaAnalysis mediaInfo = await FFProbe.AnalyseAsync(inputPath);
var videoStream = mediaInfo.PrimaryVideoStream;
if (videoStream == null)
{
Console.WriteLine("没有找到视频流");
return false;
}
// 视频总时长（秒）
var totalDuration = mediaInfo.Duration.TotalSeconds;
// 计算帧时间参数
double frameRate = videoStream.FrameRate;
double frameDuration = Math.Round(1.0 / frameRate, 6); // 一帧时长（秒）
@ -72,8 +160,8 @@ namespace VideoConcat.Services.Video
var random = new Random();
var randomFrame = random.Next(20, totalFram - 10);
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
double frameTime = Math.Round((randomFrame - 1) * frameDuration, 6); // 目标帧开始时间
double nextFrameTime = Math.Round((randomFrame + 1) * 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, $"{Guid.NewGuid()}.mp4");
@ -132,43 +220,5 @@ namespace VideoConcat.Services.Video
opt.WithCustomArgument("-c copy -shortest -y"))
.ProcessAsynchronously();
}
catch (Exception ex)
{
LogUtils.Error("抽帧失败", ex);
Console.WriteLine($"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 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);
}
}
}

11
ViewModels/ExtractWindowViewModel.cs
View File

@ -76,8 +76,15 @@ namespace VideoConcat.ViewModels
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}");
string _tmpFileName = $"{(new Random()).Next(10000,99999)}{Path.GetFileName(video)}";
string outPath = Path.Combine(_tmpPath, "out");
if (!Path.Exists(outPath))
{
Directory.CreateDirectory(outPath);
}
await VideoProcess.RemoveFrameRandomeAsync(video, $"{_tmpPath}\\out\\{_tmpFileName}");
}
finally
{