FFMPEg Print Codec

FFMPegPrintCodec.cs

var first_hwaccel = ffmpeg.av_hwaccel_next(null);
			var hwaccel = first_hwaccel;

			while (hwaccel != null)
			{
				var codecName = Marshal.PtrToStringAnsi((IntPtr)hwaccel->name);
				
				Log.Error($"{ffmpeg.avcodec_get_name(hwaccel->id)} | ID : {hwaccel->id} | {(int)(hwaccel->id)} | {hwaccel->pix_fmt} | {codecName}");

				var codec = ffmpeg.avcodec_find_encoder_by_name(codecName);

				if (codec != null)
				{
					var nextPointer = (IntPtr)codec->pix_fmts;
					var value = Marshal.PtrToStructure<int>(nextPointer);

					while (value > 0)
					{
						Log.Error($"          Supported Pixel Format {(AVPixelFormat)value}");	
						
						nextPointer = IntPtr.Add(nextPointer, sizeof(AVPixelFormat));
						value = Marshal.PtrToStructure<int>(nextPointer);						
					}
				}

				hwaccel = ffmpeg.av_hwaccel_next(hwaccel);

				if (hwaccel == first_hwaccel) break;
			}


var codecName = "h264_qsv";

var codecPointer = ffmpeg.avcodec_find_encoder_by_name(codecName);

if (codecPointer == null) throw new FFMpegException($"Codec {codecName} was not found");