public static IVideoStream SetFormat(this IVideoStream stream, VideoFormat format)
{
switch (format)
{
case VideoFormat.h264x1080p:
return(stream.SetSize(VideoSize.Hd1080).SetCodec(VideoCodec.H264));
case VideoFormat.h264x480p:
return(stream.SetSize(VideoSize.Hd480).SetCodec(VideoCodec.H264));
case VideoFormat.h264x720p:
return(stream.SetSize(VideoSize.Hd720).SetCodec(VideoCodec.H264));
}
throw new ArgumentOutOfRangeException(nameof(format));
}
public static async Task <IConversionResult> generateBrokenSample(string master, string output, TimeSpan start, TimeSpan duration)
{
string temp = Path.GetFullPath(output) + "temp-" + Path.GetFileName(output);
if (File.Exists(temp))
{
File.Delete(temp);
}
IConversion bad = await FFmpeg.Conversions.FromSnippet.Split(master, temp, start, duration);
bad.SetOverwriteOutput(true);
bad.SetPixelFormat(randomPixelFormat()); // this does 90% of the crash
randomizeScaleAndAspectRatio(bad);
await bad.Start();
IMediaInfo meta = await FFmpeg.GetMediaInfo(temp);
IVideoStream v = meta.VideoStreams.ToList().FirstOrDefault();
v.SetSize(randomVideoSize());
{
var sub = SubtitleGenerator.New();
await sub.AddSubtitle(TimeSpan.FromSeconds(0), meta.Duration, " ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐 ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐 ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐 ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐 ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐 ̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺̺ͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩͩ 𓀐\n".Repeat(100));
v.AddSubtitles(sub.Filepath);
}
IAudioStream a = meta.AudioStreams.ToList().FirstOrDefault();
a.Reverse(); // the people who survive will get confused
a.ChangeSpeed(0.5);
var result = await FFmpeg.Conversions.New()
.SetOverwriteOutput(true)
.AddStream(v)
.AddStream(a)
.SetOutput(output)
.SetPixelFormat(PixelFormat.yuv444p)
.SetVideoSyncMethod(VideoSyncMethod.passthrough)
.Start();
File.Delete(temp);
return(result);
}
// Grabs a screenshot from the specified video at the specified timestamp using `ffmpeg`
// @param videoPath (String) the path to the video file
// @param timestamp (String) the `ffmpeg` timestamp format (e.g. 00.00)
// @param dimensions (Array) the dimension of the screenshot to generate
// @return the TempFile containing the generated screenshot
public static FileInfo GrabVideoPreview(string videoPath, string timestamp, int targetWidth = 0, int targetHeight = 0)
{
IMediaInfo mediaInfo = Task.Run(async() => await MediaInfo.Get(videoPath)).Result;
IVideoStream videoStream = mediaInfo.VideoStreams.FirstOrDefault();
string output = Path.Combine(Path.GetTempPath(), Guid.NewGuid() + FileExtensions.Jpg);
var timestampDouble = double.Parse(timestamp, System.Globalization.CultureInfo.InvariantCulture);
videoStream = videoStream.SetOutputFramesCount(1).SetSeek(TimeSpan.FromSeconds(timestampDouble));
if (targetWidth != 0 && targetHeight != 0)
{
videoStream = videoStream.SetSize(new VideoSize(targetWidth, targetHeight));
}
Conversion.New().AddStream(videoStream).SetOutput(output);
return(new FileInfo(output));
}
