AddFrame() public method

Add one frame to a new stream
This works only with uncompressed streams, and compressed streams that have not been saved yet. Use DecompressToNewFile to edit saved compressed streams.
public AddFrame ( Bitmap bmp ) : void
bmp System.Drawing.Bitmap
return void
VideoStream Class Documentation
Exemplo n.º 1
0
        /// <summary>Copy a piece of video and wave sound int a new file</summary>
        /// <param name="newFileName">File name</param>
        /// <param name="startAtSecond">Start copying at second x</param>
        /// <param name="stopAtSecond">Stop copying at second y</param>
        /// <returns>AviManager for the new video</returns>
        public AviManager CopyTo(String newFileName, float startAtSecond, float stopAtSecond)
        {
            AviManager newFile = new AviManager(newFileName, false);

            try {
                //copy video stream

                VideoStream videoStream = GetVideoStream();

                int startFrameIndex = (int)(videoStream.FrameRate * startAtSecond);
                int stopFrameIndex  = (int)(videoStream.FrameRate * stopAtSecond);

                videoStream.GetFrameOpen();
                Bitmap      bmp       = videoStream.GetBitmap(startFrameIndex);
                VideoStream newStream = newFile.AddVideoStream(false, videoStream.FrameRate, bmp);
                for (int n = startFrameIndex + 1; n <= stopFrameIndex; n++)
                {
                    bmp = videoStream.GetBitmap(n);
                    newStream.AddFrame(bmp);
                }
                videoStream.GetFrameClose();

                //copy audio stream

                AudioStream waveStream = GetWaveStream();

                Avi.AVISTREAMINFO streamInfo   = new Avi.AVISTREAMINFO();
                Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
                int    streamLength            = 0;
                IntPtr ptrRawData = waveStream.GetStreamData(
                    ref streamInfo,
                    ref streamFormat,
                    ref streamLength);

                int startByteIndex = (int)(startAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);
                int stopByteIndex  = (int)(stopAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);

                IntPtr ptrWavePart = new IntPtr(ptrRawData.ToInt32() + startByteIndex);

                byte[] rawData = new byte[stopByteIndex - startByteIndex];
                Marshal.Copy(ptrWavePart, rawData, 0, rawData.Length);
                Marshal.FreeHGlobal(ptrRawData);

                streamInfo.dwLength = rawData.Length;
                streamInfo.dwStart  = 0;

                IntPtr unmanagedRawData = Marshal.AllocHGlobal(rawData.Length);
                Marshal.Copy(rawData, 0, unmanagedRawData, rawData.Length);
                newFile.AddAudioStream(unmanagedRawData, streamInfo, streamFormat, rawData.Length);
                Marshal.FreeHGlobal(unmanagedRawData);
            } catch (Exception ex) {
                newFile.Close();
                throw ex;
            }

            return(newFile);
        }
Exemplo n.º 2
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        /// <summary>Copy all frames into a new file</summary>
        /// <param name="fileName">Name of the new file</param>
        /// <param name="recompress">true: Compress the new stream</param>
        /// <returns>AviManager for the new file</returns>
        /// <remarks>Use this method if you want to append frames to an existing, compressed stream</remarks>
        public AviManager DecompressToNewFile(String fileName, bool recompress, out VideoStream newStream2)
        {
            AviManager newFile = new AviManager(fileName, false);

            this.GetFrameOpen();

            Bitmap      frame     = GetBitmap(0);
            VideoStream newStream = newFile.AddVideoStream(recompress, frameRate, frame);

            frame.Dispose();

            for (int n = 1; n < countFrames; n++)
            {
                frame = GetBitmap(n);
                newStream.AddFrame(frame);
                frame.Dispose();
            }

            this.GetFrameClose();

            newStream2 = newStream;
            return(newFile);
        }