public VideoDecoder() { AVCodec *codec = FFmpegInvoke.avcodec_find_decoder(CodecId); if (codec == null) { throw new Exception("Codec not found"); } codec_context = FFmpegInvoke.avcodec_alloc_context3(codec); if (codec_context == null) { throw new Exception("Could not allocate video codec context"); } if (FFmpegInvoke.avcodec_open2(codec_context, codec, null) < 0) { throw new Exception("Could not open codec"); } avFrame = FFmpegInvoke.avcodec_alloc_frame(); if (avFrame == null) { throw new Exception("Could not allocate video frame"); } }
public VideoDecoder() { AVCodec *pCodec = FFmpegInvoke.avcodec_find_decoder(CodecId); if (pCodec == null) { throw new VideoDecoderException("Unsupported codec."); } _pDecodingContext = FFmpegInvoke.avcodec_alloc_context3(pCodec); if (FFmpegInvoke.avcodec_open2(_pDecodingContext, pCodec, null) < 0) { throw new VideoDecoderException("Could not open codec."); } }
private static unsafe void Main(string[] args) { Console.WriteLine("Runnung in {0}-bit mode.", Environment.Is64BitProcess ? "64" : "32"); // register path to ffmpeg switch (Environment.OSVersion.Platform) { case PlatformID.Win32NT: case PlatformID.Win32S: case PlatformID.Win32Windows: string ffmpegPath = string.Format(@"../../../FFmpeg/bin/windows/{0}", Environment.Is64BitProcess ? "x64" : "x86"); InteropHelper.RegisterLibrariesSearchPath(ffmpegPath); break; case PlatformID.Unix: case PlatformID.MacOSX: string libraryPath = Environment.GetEnvironmentVariable(InteropHelper.LD_LIBRARY_PATH); InteropHelper.RegisterLibrariesSearchPath(libraryPath); break; } // decode 100 frame from url string url = @"http://hubblesource.stsci.edu/sources/video/clips/details/images/centaur_1.mpg"; FFmpegInvoke.av_register_all(); FFmpegInvoke.avcodec_register_all(); FFmpegInvoke.avformat_network_init(); AVFormatContext *pFormatContext = FFmpegInvoke.avformat_alloc_context(); if (FFmpegInvoke.avformat_open_input(&pFormatContext, url, null, null) != 0) { throw new Exception("Could not open file"); } if (FFmpegInvoke.av_find_stream_info(pFormatContext) != 0) { throw new Exception("Could not find stream info"); } AVStream *pStream = null; for (int i = 0; i < pFormatContext->nb_streams; i++) { if (pFormatContext->streams[0]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO) { pStream = pFormatContext->streams[0]; break; } } if (pStream == null) { throw new Exception("Could not found video stream"); } AVCodecContext codecContext = *(pStream->codec); int width = codecContext.width; int height = codecContext.height; AVPixelFormat sourcePixFmt = codecContext.pix_fmt; AVCodecID codecId = codecContext.codec_id; var convertToPixFmt = AVPixelFormat.PIX_FMT_BGR24; SwsContext * pConvertContext = FFmpegInvoke.sws_getContext(width, height, sourcePixFmt, width, height, convertToPixFmt, FFmpegInvoke.SWS_FAST_BILINEAR, null, null, null); if (pConvertContext == null) { throw new Exception("Could not initialize the conversion context"); } var pConvertedFrame = (AVPicture *)FFmpegInvoke.avcodec_alloc_frame(); int convertedFrameBufferSize = FFmpegInvoke.avpicture_get_size(convertToPixFmt, width, height); var pConvertedFrameBuffer = (byte *)FFmpegInvoke.av_malloc((uint)convertedFrameBufferSize); FFmpegInvoke.avpicture_fill(pConvertedFrame, pConvertedFrameBuffer, convertToPixFmt, width, height); AVCodec *pCodec = FFmpegInvoke.avcodec_find_decoder(codecId); if (pCodec == null) { throw new Exception("Unsupported codec"); } AVCodecContext *pCodecContext = FFmpegInvoke.avcodec_alloc_context3(pCodec); if ((pCodec->capabilities & FFmpegInvoke.CODEC_CAP_TRUNCATED) == FFmpegInvoke.CODEC_CAP_TRUNCATED) { pCodecContext->flags |= FFmpegInvoke.CODEC_FLAG_TRUNCATED; } if (FFmpegInvoke.avcodec_open2(pCodecContext, pCodec, null) < 0) { throw new Exception("Could not open codec"); } AVFrame *pDecodedFrame = FFmpegInvoke.avcodec_alloc_frame(); var packet = new AVPacket(); AVPacket *pPacket = &packet; FFmpegInvoke.av_init_packet(pPacket); int frameNumber = 0; while (frameNumber < 100) { Console.WriteLine("frame: {0}", frameNumber); if (FFmpegInvoke.av_read_frame(pFormatContext, pPacket) < 0) { throw new Exception("Could not read frame"); } if (pPacket->stream_index != pStream->index) { continue; } int gotPicture = 0; int size = FFmpegInvoke.avcodec_decode_video2(pCodecContext, pDecodedFrame, &gotPicture, pPacket); if (size < 0) { throw new Exception(string.Format("Error while decoding frame {0}", frameNumber)); } if (gotPicture == 1) { byte **src = &pDecodedFrame->data_0; byte **dst = &pConvertedFrame->data_0; FFmpegInvoke.sws_scale(pConvertContext, src, pDecodedFrame->linesize, 0, height, dst, pConvertedFrame->linesize); byte *convertedFrameAddress = pConvertedFrame->data_0; var imageBufferPtr = new IntPtr(convertedFrameAddress); using (var bitmap = new Bitmap(width, height, pConvertedFrame->linesize[0], PixelFormat.Format24bppRgb, imageBufferPtr)) { bitmap.Save(@"frame.buffer.jpg", ImageFormat.Jpeg); } } frameNumber++; } FFmpegInvoke.av_free(pConvertedFrame); FFmpegInvoke.av_free(pConvertedFrameBuffer); FFmpegInvoke.sws_freeContext(pConvertContext); FFmpegInvoke.av_free(pDecodedFrame); FFmpegInvoke.avcodec_close(pCodecContext); FFmpegInvoke.avformat_close_input(&pFormatContext); }
private static unsafe void Main(string[] args) { // register LD_LIBRARY_PATH on window InteropHelper.RegisterLibrariesSearchPath(Environment.GetEnvironmentVariable(InteropHelper.LD_LIBRARY_PATH)); string url = @"http://www.fileformat.info/format/mpeg/sample/031699cb978244b8a3adf1e81cb2ac7c/download"; FFmpegInvoke.av_register_all(); FFmpegInvoke.avcodec_register_all(); FFmpegInvoke.avformat_network_init(); AVFormatContext *pFormatContext = FFmpegInvoke.avformat_alloc_context(); if (FFmpegInvoke.avformat_open_input(&pFormatContext, url, null, null) != 0) { throw new Exception("Could not open file"); } if (FFmpegInvoke.av_find_stream_info(pFormatContext) != 0) { throw new Exception("Could not find stream info"); } AVStream *pStream = null; for (int i = 0; i < pFormatContext->nb_streams; i++) { if (pFormatContext->streams[0]->codec->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO) { pStream = pFormatContext->streams[0]; break; } } if (pStream == null) { throw new Exception("Could not found video stream"); } AVCodecContext codecContext = *(pStream->codec); int width = codecContext.width; int height = codecContext.height; AVPixelFormat sourcePixFmt = codecContext.pix_fmt; AVCodecID codecId = codecContext.codec_id; var convertToPixFmt = AVPixelFormat.PIX_FMT_BGR24; SwsContext * pConvertContext = FFmpegInvoke.sws_getContext(width, height, sourcePixFmt, width, height, convertToPixFmt, FFmpegInvoke.SWS_FAST_BILINEAR, null, null, null); if (pConvertContext == null) { throw new Exception("Could not initialize the conversion context"); } var pConvertedFrame = (AVPicture *)FFmpegInvoke.avcodec_alloc_frame(); int convertedFrameBufferSize = FFmpegInvoke.avpicture_get_size(convertToPixFmt, width, height); var pConvertedFrameBuffer = (byte *)FFmpegInvoke.av_malloc((uint)convertedFrameBufferSize); FFmpegInvoke.avpicture_fill(pConvertedFrame, pConvertedFrameBuffer, convertToPixFmt, width, height); AVCodec *pCodec = FFmpegInvoke.avcodec_find_decoder(codecId); if (pCodec == null) { throw new Exception("Unsupported codec"); } AVCodecContext *pCodecContext = FFmpegInvoke.avcodec_alloc_context3(pCodec); if ((pCodec->capabilities & FFmpegInvoke.CODEC_CAP_TRUNCATED) == FFmpegInvoke.CODEC_CAP_TRUNCATED) { pCodecContext->flags |= FFmpegInvoke.CODEC_FLAG_TRUNCATED; } if (FFmpegInvoke.avcodec_open2(pCodecContext, pCodec, null) < 0) { throw new Exception("Could not open codec"); } AVFrame *pDecodedFrame = FFmpegInvoke.avcodec_alloc_frame(); var packet = new AVPacket(); AVPacket *pPacket = &packet; FFmpegInvoke.av_init_packet(pPacket); int frameNumber = 0; while (frameNumber < 100) { Console.WriteLine("frame: {0}", frameNumber); if (FFmpegInvoke.av_read_frame(pFormatContext, pPacket) < 0) { throw new Exception("Could not read frame"); } if (pPacket->stream_index != pStream->index) { continue; } int gotPicture = 0; int size = FFmpegInvoke.avcodec_decode_video2(pCodecContext, pDecodedFrame, &gotPicture, pPacket); if (size < 0) { throw new Exception(string.Format("Error while decoding frame {0}", frameNumber)); } if (gotPicture == 1) { byte **src = &pDecodedFrame->data_0; byte **dst = &pConvertedFrame->data_0; FFmpegInvoke.sws_scale(pConvertContext, src, pDecodedFrame->linesize, 0, height, dst, pConvertedFrame->linesize); byte *convertedFrameAddress = pConvertedFrame->data_0; var imageBufferPtr = new IntPtr(convertedFrameAddress); using (var bitmap = new Bitmap(width, height, pConvertedFrame->linesize[0], PixelFormat.Format24bppRgb, imageBufferPtr)) { bitmap.Save(@"frame.buffer.jpg", ImageFormat.Jpeg); } } frameNumber++; } FFmpegInvoke.av_free(pConvertedFrame); FFmpegInvoke.av_free(pConvertedFrameBuffer); FFmpegInvoke.sws_freeContext(pConvertContext); FFmpegInvoke.av_free(pDecodedFrame); FFmpegInvoke.avcodec_close(pCodecContext); FFmpegInvoke.avformat_close_input(&pFormatContext); }
public VideoEncoder(int width, int height, int fps) { _converter = new VideoConverter(CODEC_PIXEL_FORMAT); AVCodec *codec = FFmpegInvoke.avcodec_find_encoder(CODEC_ID); if (codec == null) { throw new Exception("Codec not found"); } _codec_context = FFmpegInvoke.avcodec_alloc_context3(codec); if (_codec_context == null) { throw new Exception("Could not allocate video codec context"); } _codec_context->bit_rate = 50000; _codec_context->width = width; _codec_context->height = height; _codec_context->time_base = new AVRational() { num = 1, den = fps }; _codec_context->gop_size = 10; // emit one intra frame every ten frames _codec_context->max_b_frames = 1; _codec_context->pix_fmt = CODEC_PIXEL_FORMAT; FFmpegInvoke.av_opt_set(_codec_context->priv_data, "preset", "fast", 0); if (FFmpegInvoke.avcodec_open2(_codec_context, codec, null) < 0) { throw new Exception("Could not open codec"); } _avFrameYUV = FFmpegInvoke.avcodec_alloc_frame(); if (_avFrameYUV == null) { throw new Exception("Could not allocate video frame"); } _avFrameYUV->format = (int)CODEC_PIXEL_FORMAT; _avFrameYUV->width = width; _avFrameYUV->height = height; var ret1 = FFmpegInvoke.av_image_alloc(&_avFrameYUV->data_0, _avFrameYUV->linesize, width, height, CODEC_PIXEL_FORMAT, 32); if (ret1 < 0) { throw new Exception("Could not allocate raw picture buffer"); } _avFrameBGR = FFmpegInvoke.avcodec_alloc_frame(); if (_avFrameBGR == null) { throw new Exception("Could not allocate video frame"); } _avFrameBGR->format = (int)INPUT_PIXEL_FORMAT; _avFrameBGR->width = width; _avFrameBGR->height = height; var ret2 = FFmpegInvoke.av_image_alloc(&_avFrameBGR->data_0, _avFrameBGR->linesize, width, height, INPUT_PIXEL_FORMAT, 32); if (ret2 < 0) { throw new Exception("Could not allocate raw picture buffer"); } }