public byte[] GetBitmapFromVideoAsByte(string videoFile, double position, FFMpegImageSize imageSize)
{
var intermediateFile = this.temporaryFilesStorage.GetIntermediateFile(".jpg");
try
{
var quality = imageSize.ToString().ToLower();
var parameters = string.Format(
CultureInfo.InvariantCulture,
"-ss {1} -i \"{0}\" -vframes 1 -s {2} \"{3}\"",
videoFile,
position,
quality,
intermediateFile);
var command = new FFMpegCommand(pathToFfMpegExe, parameters, true);
this.ExecuteFFMpegCommand(command, "ExtractFrame");
using (var fs = new FileStream(intermediateFile, FileMode.Open, FileAccess.Read))
{
var byteImage = new byte[fs.Length];
fs.Read(byteImage, 0, (int)fs.Length);
this.LogMessage("ExtractFrame", "RETURN: " + byteImage.Length);
return(byteImage);
}
}
catch (Exception e)
{
this.LogMessage("ExtractFrame error:", e.GetFullMessage());
throw;
}
}
public FFMpegVideoInfo GetVideoInfo(string inputFile)
{
if (string.IsNullOrEmpty(inputFile) || (!inputFile.Contains("http://") && !inputFile.Contains("https://") && !File.Exists(inputFile)))
{
throw new FileNotFoundException($"Can't get video info. File path is null or file doesn't exist. Path: {inputFile}");
}
// информация о видео придёт вместе с сообщением об ошибке, что не задан выходной файл.
var command = new FFMpegCommand(pathToFfMpegExe, $"-i \"{inputFile}\"", true);
var result = this.ExecuteFFMpegCommand(command, "GetVideoInfo");
return(ParseVideoInfo(result));
}
private string ExecuteFFMpegCommand(FFMpegCommand command, string operationName)
{
try
{
var result = command.Execute();
this.LogMessage(operationName, result);
return(result);
}
catch (FFMpegException ffMpegException)
{
this.LogMessage(operationName, ffMpegException.AllFFMpegOutput);
throw;
}
catch (Exception exception)
{
this.LogMessage(operationName + " UNKNOWN ERROR", exception.Message);
throw;
}
}
