ffmpeg.autogen 录像录音 示例

以下是使用FFmpeg.AutoGen库在C#中进行录像和录音的基本示例代码：

using System;
using FFmpeg.AutoGen;

namespace FFmpegRecordingExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initialize FFmpeg library
            ffmpeg.av_register_all();

            // Open video and audio devices
            AVFormatContext* videoInputContext = null;
            AVFormatContext* audioInputContext = null;

            if (ffmpeg.avformat_open_input(&videoInputContext, "video_device_path", null, null) != 0)
            {
                Console.WriteLine("Failed to open video device");
                return;
            }

            if (ffmpeg.avformat_open_input(&audioInputContext, "audio_device_path", null, null) != 0)
            {
                Console.WriteLine("Failed to open audio device");
                return;
            }

            // Create output file context
            AVFormatContext* outputContext = null;
            if (ffmpeg.avformat_alloc_output_context2(&outputContext, null, null, "output_file_path") < 0)
            {
                Console.WriteLine("Failed to create output file");
                return;
            }

            // Create video and audio streams
            AVStream* videoStream = ffmpeg.avformat_new_stream(outputContext, null);
            AVStream* audioStream = ffmpeg.avformat_new_stream(outputContext, null);

            // Set video and audio codec parameters
            AVCodecContext* videoCodecContext = videoStream->codec;
            AVCodecContext* audioCodecContext = audioStream->codec;

            // Set codec parameters according to your requirements

            // Open video and audio codecs
            AVCodec* videoCodec = ffmpeg.avcodec_find_encoder(videoCodecContext->codec_id);
            AVCodec* audioCodec = ffmpeg.avcodec_find_encoder(audioCodecContext->codec_id);

            if (ffmpeg.avcodec_open2(videoCodecContext, videoCodec, null) < 0)
            {
                Console.WriteLine("Failed to open video codec");
                return;
            }

            if (ffmpeg.avcodec_open2(audioCodecContext, audioCodec, null) < 0)
            {
                Console.WriteLine("Failed to open audio codec");
                return;
            }

            // Read frames from video and audio devices
            AVPacket* videoPacket = ffmpeg.av_packet_alloc();
            AVPacket* audioPacket = ffmpeg.av_packet_alloc();

            while (true)
            {
                if (ffmpeg.av_read_frame(videoInputContext, videoPacket) < 0)
                {
                    Console.WriteLine("Failed to read video frame");
                    break;
                }

                // Process and encode video frame

                ffmpeg.av_packet_unref(videoPacket);
            }

            while (true)
            {
                if (ffmpeg.av_read_frame(audioInputContext, audioPacket) < 0)
                {
                    Console.WriteLine("Failed to read audio frame");
                    break;
                }

                // Process and encode audio frame

                ffmpeg.av_packet_unref(audioPacket);
            }

            // Write encoded packets to output file
            ffmpeg.av_interleaved_write_frame(outputContext, videoPacket);
            ffmpeg.av_interleaved_write_frame(outputContext, audioPacket);

            // Release resources
            ffmpeg.avformat_close_input(&videoInputContext);
            ffmpeg.avformat_close_input(&audioInputContext);

            ffmpeg.avcodec_close(videoCodecContext);
            ffmpeg.avcodec_close(audioCodecContext);

            ffmpeg.avformat_free_context(outputContext);
        }
    }
}

请注意，这只是一个基本示例，实际使用时可能需要根据您的具体需求进行更多的参数设置和错误处理。还可以根据需要进行编解码、处理和保存等操作。

在示例代码中，您需要将"video_device_path"替换为实际的视频设备路径，将"audio_device_path"替换为实际的音频设备路径，将"output_file_path"替换为实际的输出文件路径。

希望这个示例能对您有所帮助！如果您有任何更具体的问题，请随时提问。