Files
douyin/service/DouyinMergeVideoService.cs
T

426 lines
19 KiB
C#

using ClockSnowFlake;
using dy.net.dto;
using dy.net.utils;
using Serilog;
namespace dy.net.service
{
/// <summary>
/// 合并多张图片+音频为视频
/// </summary>
public class DouyinMergeVideoService
{
private readonly FFmpegHelper _fFmpegHelper;
private readonly DouyinHttpClientService douyinHttpClientService;
public DouyinMergeVideoService(FFmpegHelper fFmpegHelper,DouyinHttpClientService douyinHttpClientService)
{
_fFmpegHelper = fFmpegHelper;
this.douyinHttpClientService = douyinHttpClientService;
}
// 1. 并发控制:限制同时运行的 FFmpeg 进程数(建议设为 1,FFmpeg 单进程更稳定)
private readonly SemaphoreSlim _ffmpegSemaphore = new SemaphoreSlim(1, 1);
// 重试次数配置
private const int RetryCount = 3;
// 重试间隔(毫秒)
private const int RetryDelay = 1000;
/// <summary>
/// 视频合成
/// </summary>
/// <param name="cookie"></param>
/// <param name="rootPath"></param>
/// <param name="request"></param>
/// <param name="outputVideoPath"></param>
/// <param name="fileNamefolder"></param>
/// <param name="mergeImg2Viedo"></param>
/// <param name="downImage"></param>
/// <param name="downMp3"></param>
/// <returns></returns>
//public async Task<bool> MergeToVideo(string cookie,string rootPath, MediaMergeRequest request,string outputVideoPath,string fileNamefolder,bool mergeImg2Viedo,bool downImage=false,bool downMp3=false)
//{
// try
// {
// // 创建唯一临时目录(避免并发冲突)
// var tempDir = Path.Combine(rootPath, "temp", Guid.NewGuid().ToString());
// try
// {
// // 1. 下载图片
// var (rawImages, error) = await DownloadMediaAsync(request.ImageUrls, Path.Combine(tempDir, "raw-images"), "image_", "webp",cookie);
// if (!string.IsNullOrEmpty(error))
// {
// Serilog.Log.Error($"{error}");
// return false;
// }
// else
// {
// if(downImage)
// {
// for (int i = 0; i < rawImages.Length; i++)
// {
// string sourcePath = rawImages[i];
// // 重命名为有规律的文件名,如 temp_001.jpg, temp_002.png
// string extension = Path.GetExtension(sourcePath);
// string destFileName = $"temp_{i + 1:D3}{extension}"; // D3 确保是3位数字,不足补0
// string destPath = Path.Combine(fileNamefolder, destFileName);
// if (destPath.Contains("小可爱") || sourcePath.Contains("小可爱")) {
// Console.WriteLine("发现小可爱图片");
// }
// if (!File.Exists(destPath))
// File.Copy(sourcePath, destPath);
// }
// }
// }
// // 2. 下载音频
// var (rawAudios, audioError) = await DownloadMediaAsync(request.AudioUrls, Path.Combine(tempDir, "raw-audios"), "audio_", "mp3", cookie);
// if (!string.IsNullOrEmpty(audioError))
// {
// Serilog.Log.Error($"{audioError}");
// return false;
// }
// else
// {
// if(downMp3)
// {
// for (int i = 0; i < rawAudios.Length; i++)
// {
// string sourcePath = rawAudios[i];
// // 重命名为有规律的文件名,如 temp_001.mp3, temp_002.mp3
// string extension = Path.GetExtension(sourcePath);
// string destFileName = $"temp_{i + 1:D3}{extension}"; // D3 确保是3位数字,不足补0
// string destPath = Path.Combine(fileNamefolder, destFileName);
// if (!File.Exists(destPath))
// File.Copy(sourcePath, destPath);
// }
// }
// }
// if (!mergeImg2Viedo)
// {
// // 不合成视频,直接返回成功
// Serilog.Log.Debug($"不合成视频,直接返回");
// return true;
// }
// // 4. 合成视频
// //var outputVideoPath = Path.Combine(tempDir, "output", $"merged-video.{request.OutputFormat.ToLower()}");
// // 2. 创建帮助类实例
// // 在Docker容器内,FFmpeg通常在PATH中,所以直接用 "ffmpeg" 即可
// // 根据图片数量调整每张图片显示时长
// if (request.ImageUrls.Count <= 3)
// {
// request.ImageDurationPerSecond = 3;
// }
// if (request.ImageUrls.Count > 20)
// {
// request.ImageDurationPerSecond = 2;
// }
// // 3. (可选)自定义视频参数
// _fFmpegHelper.VideoWidth = 1080;
// _fFmpegHelper.VideoHeight = 1920;
// _fFmpegHelper.ImageDisplayDurationSeconds = request.ImageDurationPerSecond;
// _fFmpegHelper.OutputFrameRate = 30;
// // 4. 创建进度
// var progress = new Progress<double>(p =>
// {
// Console.WriteLine($"进度: {p:F2}%");
// });
// // 5. 执行合成任务
// using (var cancellationTokenSource = new CancellationTokenSource())
// {
// string resultPath = await _fFmpegHelper.CreateVideoFromImagesAndAudioAsync(
// rawImages,
// rawAudios[0],
// outputVideoPath,
// request.VideoWidth,
// request.VideoHeight,
// progress,
// cancellationTokenSource.Token);
// //Console.WriteLine($"视频合成成功!文件已保存至: {resultPath}");
// Serilog.Log.Debug($"视频合成成功!文件已保存至: {resultPath}");
// }
// }
// finally
// {
// // 清理临时目录(无论成功失败)
// if (Directory.Exists(tempDir))
// {
// Directory.Delete(tempDir, recursive: true);
// }
// }
// return true;
// }
// catch (Exception ex)
// {
// Serilog.Log.Error($"{ex.StackTrace}");
// return false;
// }
//}
/// <summary>
/// 视频合成(优化后:解决 FFmpeg 进程冲突,支持容错重试)
/// </summary>
public async Task<bool> MergeToVideo(string cookie, string rootPath, MediaMergeRequest request,
string outputVideoPath, string fileNamefolder, bool mergeImg2Viedo, bool downImage = false, bool downMp3 = false)
{
// 输入参数校验(避免无效执行)
if (request == null || request.ImageUrls == null || request.ImageUrls.Count == 0)
{
Log.Error("图片URL列表为空,无法合成视频");
return false;
}
//if (mergeImg2Viedo && (request.AudioUrls == null || request.AudioUrls.Count == 0))
//{
// Log.Error("合成视频时音频URL列表为空");
// return false;
//}
string tempDir = null;
try
{
// 创建唯一临时目录(避免并发冲突)
tempDir = Path.Combine(rootPath, "temp", Guid.NewGuid().ToString());
Directory.CreateDirectory(tempDir); // 确保目录存在
// 1. 下载图片
var (rawImages, imageError) = await DownloadMediaAsync(
request.ImageUrls, Path.Combine(tempDir, "raw-images"), "image_", "webp", cookie);
if (!string.IsNullOrEmpty(imageError) || rawImages == null || rawImages.Length == 0)
{
Log.Error($"图片下载失败:{imageError ?? "未下载到任何图片"}");
return false;
}
// 保存下载的图片(如果需要)
if (downImage)
{
await SaveDownloadedFilesAsync(rawImages, fileNamefolder, "jpg",Path.GetFileNameWithoutExtension(outputVideoPath));
}
// 2. 下载音频
string[] rawAudios = Array.Empty<string>();
if (mergeImg2Viedo&& request.AudioUrls != null && request.AudioUrls.Count>0)
{
var (audios, audioError) = await DownloadMediaAsync(
request.AudioUrls, Path.Combine(tempDir, "raw-audios"), "audio_", "mp3", cookie);
if (!string.IsNullOrEmpty(audioError) || audios == null || audios.Length == 0)
{
Log.Error($"音频下载失败:{audioError ?? "未下载到任何音频"}");
return false;
}
rawAudios = audios;
// 保存下载的音频(如果需要)
if (downMp3)
{
await SaveDownloadedFilesAsync(rawAudios, fileNamefolder, "mp3", Path.GetFileNameWithoutExtension(outputVideoPath));
}
}
// 不合成视频,直接返回成功
if (!mergeImg2Viedo)
{
Log.Debug("不合成视频,直接返回成功");
return true;
}
// 3. 调整图片显示时长
AdjustImageDuration(request);
// 4. 容错重试:处理 FFmpeg 进程冲突等临时错误
bool mergeSuccess = await RetryOnFfmpegConflictAsync(async () =>
{
// 并发控制:等待前一个 FFmpeg 进程完成
await _ffmpegSemaphore.WaitAsync();
try
{
// 每次合成创建独立的 FFmpegHelper 实例(避免状态共享)
var ffmpegHelper = new FFmpegHelper();
// 配置视频参数(独立实例,无共享冲突)
ffmpegHelper.VideoWidth = request.VideoWidth > 0 ? request.VideoWidth : 1080;
ffmpegHelper.VideoHeight = request.VideoHeight > 0 ? request.VideoHeight : 1920;
ffmpegHelper.ImageDisplayDurationSeconds = request.ImageDurationPerSecond;
ffmpegHelper.OutputFrameRate = 30;
// 进度回调
var progress = new Progress<double>(p =>
{
Log.Debug($"视频合成进度:{p:F2}%");
});
// 超时控制:避免 FFmpeg 进程无限运行(300秒=5分钟)
using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(300));
// 执行合成(确保每个图片都参与)
if (rawAudios.Length == 0)
{
rawAudios= new string[] { Path.Combine(AppContext.BaseDirectory,"mp3", "silent_10.mp3") };
Log.Debug("未检测到音频,使用默认静音音频-无声");
}
string resultPath = await ffmpegHelper.CreateVideoFromImagesAndAudioAsync(
rawImages, // 所有下载的图片(确保无遗漏)
rawAudios[0], // 取第一个音频(可根据需求调整)
outputVideoPath,
ffmpegHelper.VideoWidth,
ffmpegHelper.VideoHeight,
progress,
cts.Token);
Log.Debug($"视频合成成功!文件路径:{resultPath}");
return !string.IsNullOrEmpty(resultPath) && File.Exists(resultPath);
}
finally
{
// 释放信号量,允许下一个任务执行
_ffmpegSemaphore.Release();
}
});
return mergeSuccess;
}
catch (Exception ex)
{
Log.Error(ex, "视频合成过程中发生未处理异常");
return false;
}
finally
{
// 安全清理临时目录(确保 FFmpeg 进程已释放文件句柄)
await SafeCleanTempDirAsync(tempDir);
}
}
/// <summary>
/// 保存下载的文件(图片/音频)到目标目录
/// </summary>
private async Task SaveDownloadedFilesAsync(string[] sourcePaths, string targetFolder, string defaultExt,string videoFileName)
{
if (sourcePaths == null || sourcePaths.Length == 0) return;
Directory.CreateDirectory(targetFolder); // 确保目标目录存在
// 异步保存(不阻塞主线程)
await Task.WhenAll(sourcePaths.Select(async (sourcePath, index) =>
{
if (!File.Exists(sourcePath)) return;
string extension = Path.GetExtension(sourcePath) ?? $".{defaultExt}";
string destFileName = $"{videoFileName}{index + 1:D3}{extension}";
string destPath = Path.Combine(targetFolder, destFileName);
// 文件不存在时才复制,避免覆盖
if (!File.Exists(destPath))
{
await Task.Run(() => File.Copy(sourcePath, destPath, overwrite: false));
Log.Debug($"已保存文件:{destPath}");
}
}));
}
/// <summary>
/// FFmpeg 进程冲突时重试
/// </summary>
private async Task<bool> RetryOnFfmpegConflictAsync(Func<Task<bool>> action)
{
int retryCount = 0;
while (retryCount < RetryCount)
{
try
{
return await action();
}
catch (Exception ex)
{
// 识别 FFmpeg 进程冲突相关异常(根据实际异常信息调整条件)
if (ex.Message.Contains("FFmpeg 进程正在运行") ||
ex.Message.Contains("进程已在运行") ||
ex.Message.Contains("文件被另一个进程占用"))
{
retryCount++;
Log.Warning($"FFmpeg 进程冲突,第 {retryCount}/{RetryCount} 次重试... 异常信息:{ex.Message}");
await Task.Delay(RetryDelay * retryCount); // 重试间隔递增
continue;
}
// 非进程冲突异常,直接抛出
throw;
}
}
Log.Error($"FFmpeg 进程冲突,重试 {RetryCount} 次后仍失败");
return false;
}
/// <summary>
/// 安全清理临时目录(避免文件被占用)
/// </summary>
private async Task SafeCleanTempDirAsync(string tempDir)
{
if (string.IsNullOrEmpty(tempDir) || !Directory.Exists(tempDir))
return;
try
{
// 延迟清理:给 FFmpeg 进程足够时间释放文件句柄(1秒)
await Task.Delay(1000);
Directory.Delete(tempDir, recursive: true);
Log.Debug($"临时目录已清理:{tempDir}");
}
catch (Exception ex)
{
// 清理失败时备份目录,避免占用磁盘空间
string backupDir = $"{tempDir}_backup_{Guid.NewGuid().ToString("N")}";
Directory.Move(tempDir, backupDir);
Log.Error(ex, $"临时目录清理失败,已备份至:{backupDir}");
}
}
/// <summary>
/// 调整图片显示时长
/// </summary>
private void AdjustImageDuration(MediaMergeRequest request)
{
if (request.ImageUrls.Count <= 3)
request.ImageDurationPerSecond = 3;
else if (request.ImageUrls.Count > 20)
request.ImageDurationPerSecond = 2;
// 中间数量保持原有配置
}
/// <summary>通用媒体下载方法</summary>
private async Task<(string[] SuccessPaths, string ErrorMsg)> DownloadMediaAsync(
List<string> urls, string saveDir, string prefix, string ext,string cookie)
{
var successPaths = new List<string>();
for (var i = 0; i < urls.Count; i++)
{
var url = urls[i];
var fileExt = ext ?? Path.GetExtension(url).TrimStart('.') ?? "png";
var fileName = $"{prefix}{i + 1}.{fileExt}";
var savePath = Path.Combine(saveDir, fileName);
try
{
await douyinHttpClientService.DownloadAsync(url, savePath, cookie);
successPaths.Add(savePath);
//Console.WriteLine($"下载成功:{url} → {savePath}");
}
catch (Exception ex)
{
var error = $"下载失败:{url},错误:{ex.Message}";
Serilog.Log.Error(error);
return (Array.Empty<string>(), error);
}
}
return (successPaths.ToArray(), null);
}
}
}