public static async Task GenerateVideo(string fileName)
{
await GeneratePartialVideos("tmp_overlay_video.mp4", "tmp_content_video.mp4");
await CMD.FFmpeg("-y " +
$"-i {overlayVideo} -i {contentVideo} " +
$"-filter_complex \"[0:v][1:v] overlay={Template.Content.X}:{Template.Content.Y}\" " +
$"-pix_fmt yuv420p -c:a copy " +
$"{fileName}");
File.Delete(overlayVideo);
File.Delete(contentVideo);
}
public async Task CreateAudio(string fileName)
{
try
{
await CMD.FFmpeg($"-y -i {Audio} -ss {Start} -to {End} -c copy {fileName}");
Audio = fileName;
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
private static async Task GeneratePartialVideos(string overlayFileName, string contentFileName)
{
try
{
var overlayVideos = "";
var contentVideos = "";
var filters = "";
var overlayLinks = "";
var contentLinks = "";
var i = 0;
foreach (var music in Musics)
{
// Création des assets pour l'overlay
music.CreateOverlayImage($"tmp_overlay_image_{i + 1}.bmp");
// Création de l'image pour le contenu
music.CreateContentImage($"tmp_content_image_{i + 1}.bmp");
// Création de l'audio
await music.CreateAudio($"tmp_audio_{i + 1}.mp3");
// Création de la vidéo pour l'overlay
await music.CreateOverlayVideo($"tmp_overlay_video_{i + 1}.mp4");
// Création de la vidéo pour le contenu
await music.CreateContentVideo($"tmp_content_video_{i + 1}.mp4");
// Création des paramètres pour la jointure
overlayVideos += " -i " + music.OverlayVideo;
contentVideos += " -i " + music.ContentVideo;
var length = music.GetAudioLength();
filters += $"[{i}:v] fade=t=in:st=0:d=2, fade=t=out:st={length - 2}:d=2 [{i}v]; ";
filters += $"[{i}:a] afade=t=in:st=0:d=2, afade=t=out:st={length - 2}:d=2 [{i}a]; ";
overlayLinks += $"[{i}v] ";
contentLinks += $"[{i}v] [{i}a] ";
i++;
}
// Création de la vidéo overlay
overlayVideo = overlayFileName;
await CMD.FFmpeg("-y " +
$"{overlayVideos} " +
"-filter_complex \"" +
overlayLinks +
$"concat=n={Musics.Count}:v=1 [v] \" " +
$"-map \"[v]\" -c:v libx264 {overlayVideo}");
// Création de la vidéo contenu
contentVideo = contentFileName;
await CMD.FFmpeg("-y " +
$"{contentVideos} " +
"-filter_complex \"" +
filters +
contentLinks +
$"concat=n={Musics.Count}:v=1:a=1 [v] [a]\" " +
$"-map \"[v]\" -map \"[a]\" -c:v libx264 -c:a aac {contentVideo}");
Musics.ForEach(m => m.Clear());
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
public static async Task GenerateVideoFromImageAndDuration(string image, int duration, string outputFile)
{
await CMD.FFmpeg($"-y -loop 1 -i {image} -c:v libx264 -t {duration} {outputFile}");
}
public static async Task GenerateVideoFromAudioAndImage(string audioFile, string image, string outputFile)
{
await CMD.FFmpeg(
$"-y -loop 1 -i {image} -i {audioFile} -shortest -acodec copy -vcodec copy {outputFile}");
}