/// <summary>
/// Checks the video for matches.
/// </summary>
/// <param name="videoPath">The video path.</param>
/// <param name="desiredTag">The desired tag to look for in the video.</param>
/// <param name="startingPoint">The starting point of the search (in seconds).</param>
/// <returns> Image data object </returns>
public static async Task <FrameDto> CheckVideoForMatches
(string videoPath, string desiredTag, double startingPoint = 0)
{
VideoFileReader reader = new VideoFileReader();
reader.Open(videoPath);
double rate = reader.FrameRate.ToDouble();
for (int i = 0; i < reader.FrameCount; i++)
{
try
{
byte[] frame = ImageManager.ToBytes(reader.ReadVideoFrame());
double current_seconds = i * 1.0 / rate;
if (i % rate != 0 || startingPoint > current_seconds)
// for efficiency: only do analysis every 1 second (or every N=rate frames)
{
continue;
}
JToken analysis = await ComputerVisionManager.AnalyzeImage(frame);
if (ImageManager.CheckMatch(desiredTag, analysis))
{
reader.Close();
return(new FrameDto()
{
Analysis = analysis,
OccurenceTime =
TimeSpan.FromSeconds(current_seconds),
DesiredTag = desiredTag
});
}
}
catch (Exception)
{
continue;
}
}
reader.Close();
return(null);
}
static void Main(string[] args)
{
ComputerVisionManager manager = new ComputerVisionManager();
IResult result = manager.AnalyzeImage("{subscription key}",
"http://static.cnbetacdn.com/thumb/article/2017/0131/9a0adc9b1362043.jpg_600x600.jpg",
//"https://imgsa.baidu.com/baike/c0%3Dbaike116%2C5%2C5%2C116%2C38/sign=9047a0f3af1ea8d39e2f7c56f6635b2b/c2fdfc039245d6887782a5ecadc27d1ed31b24f1.jpg",
new VisualFeature[] {
VisualFeature.Adult,
VisualFeature.Categories,
VisualFeature.Color,
VisualFeature.Description,
VisualFeature.Faces,
VisualFeature.ImageType,
VisualFeature.Tags
},
string.Empty, Language.en);
}