avi_tscc是什么软件

avi_tscc是一种视频编码器，用于将视频压缩以减少文件大小并提高传输效率。它是由TechSmith公司开发的一种专有编码器，主要用于将视频压缩为AVI格式。avi_tscc使用一种称为"TechSmith Screen Capture Codec"的编码方法，能够在保持高质量的同时减少视频文件的大小。这使得用户能够在不损失视频质量的情况下更轻松地存储和传输视频文件。avi_tscc编码器通常用于屏幕录制、游戏截图、视频教程制作以及视频演示等场景中。它的应用范围广泛，可以适用于个人用户和专业用户。值得注意的是，avi_tscc是一种专有编码器，所以在使用之前可能需要购买或获取相关的授权。

相关问题

C#H264转BMP

根据提供的引用内容，您可以使用FFmpeg API在C#中编写程序，以实现将H264关键帧转换为BMP的功能。以下是大致的流程原理：

1.使用FFmpeg API解复用mp4文件，得到一个视频流。
2.将视频流解码为yuv序列。
3.将yuv序列中指定的一帧图片内容转换为rgb。
4.将rgb数据存储为bmp位图。

以下是一个C#的示例代码：

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;

namespace H264ToBmp
{
    class Program
    {
        static void Main(string[] args)
        {
            // 初始化FFmpeg
            FFmpeg.av_register_all();
            FFmpeg.avcodec_register_all();

            // 打开输入文件
            string inputFileName = "input.mp4";
            AVFormatContext* inputFormatContext = null;
            if (FFmpeg.avformat_open_input(&inputFormatContext, inputFileName, null, null) != 0)
            {
                Console.WriteLine("无法打开输入文件");
                return;
            }

            // 查找视频流
            int videoStreamIndex = -1;
            for (int i = 0; i < inputFormatContext->nb_streams; i++)
            {
                if (inputFormatContext->streams[i]->codecpar->codec_type == AVMediaType.AVMEDIA_TYPE_VIDEO)
                {
                    videoStreamIndex = i;
                    break;
                }
            }
            if (videoStreamIndex == -1)
            {
                Console.WriteLine("无法找到视频流");
                return;
            }

            // 打开视频解码器
            AVCodec* videoCodec = FFmpeg.avcodec_find_decoder(inputFormatContext->streams[videoStreamIndex]->codecpar->codec_id);
            if (videoCodec == null)
            {
                Console.WriteLine("无法找到视频解码器");
                return;
            }
            AVCodecContext* videoCodecContext = FFmpeg.avcodec_alloc_context3(videoCodec);
            if (FFmpeg.avcodec_parameters_to_context(videoCodecContext, inputFormatContext->streams[videoStreamIndex]->codecpar) < 0)
            {
                Console.WriteLine("无法初始化视频解码器上下文");
                return;
            }
            if (FFmpeg.avcodec_open2(videoCodecContext, videoCodec, null) < 0)
            {
                Console.WriteLine("无法打开视频解码器");
                return;
            }

            // 查找关键帧
            AVPacket packet = new AVPacket();
            AVFrame* frame = FFmpeg.av_frame_alloc();
            int gotPicture = 0;
            while (FFmpeg.av_read_frame(inputFormatContext, &packet) >= 0)
            {
                if (packet.stream_index == videoStreamIndex)
                {
                    if (FFmpeg.avcodec_decode_video2(videoCodecContext, frame, &gotPicture, &packet) < 0)
                    {
                        Console.WriteLine("无法解码视频帧");
                        return;
                    }
                    if (gotPicture != 0 && (frame->key_frame != 0 || frame->pict_type == AVPictureType.AV_PICTURE_TYPE_I))
                    {
                        break;
                    }
                }
                FFmpeg.av_packet_unref(&packet);
            }

            // 将yuv序列转换为rgb
            SwsContext* swsContext = FFmpeg.sws_getContext(videoCodecContext->width, videoCodecContext->height, videoCodecContext->pix_fmt,
                videoCodecContext->width, videoCodecContext->height, AVPixelFormat.AV_PIX_FMT_RGB24, 0, null, null, null);
            AVFrame* rgbFrame = FFmpeg.av_frame_alloc();
            byte_ptrArray4 rgbData = new byte_ptrArray4();
            int rgbDataSize = FFmpeg.av_image_alloc(rgbData, null, videoCodecContext->width, videoCodecContext->height, AVPixelFormat.AV_PIX_FMT_RGB24, 1);
            FFmpeg.sws_scale(swsContext, frame->data, frame->linesize, 0, videoCodecContext->height, rgbData, rgbFrame->linesize);

            // 将rgb数据存储为bmp位图
            Bitmap bmp = new Bitmap(videoCodecContext->width, videoCodecContext->height, videoCodecContext->width * 3, PixelFormat.Format24bppRgb, new IntPtr(rgbData[0]));
            bmp.Save("output.bmp", ImageFormat.Bmp);

            // 释放资源
            FFmpeg.avformat_close_input(&inputFormatContext);
            FFmpeg.avcodec_free_context(&videoCodecContext);
            FFmpeg.av_frame_free(&frame);
            FFmpeg.sws_freeContext(swsContext);
            FFmpeg.av_frame_free(&rgbFrame);
            FFmpeg.av_freep(&rgbData[0]);
        }
    }

    public unsafe static class FFmpeg
    {
        private const string DllName = "ffmpeg.dll";

        [DllImport(DllName)]
        public static extern void av_register_all();

        [DllImport(DllName)]
        public static extern void avcodec_register_all();

        [DllImport(DllName)]
        public static extern int avformat_open_input(AVFormatContext** ps, string url, AVInputFormat* fmt, AVDictionary** options);

        [DllImport(DllName)]
        public static extern int avcodec_decode_video2(AVCodecContext* avctx, AVFrame* picture, int* got_picture_ptr, AVPacket* avpkt);

        [DllImport(DllName)]
        public static extern AVCodec* avcodec_find_decoder(AVCodecID id);

        [DllImport(DllName)]
        public static extern AVCodecContext* avcodec_alloc_context3(AVCodec* codec);

        [DllImport(DllName)]
        public static extern int avcodec_parameters_to_context(AVCodecContext* codec, AVCodecParameters* par);

        [DllImport(DllName)]
        public static extern int avcodec_open2(AVCodecContext* avctx, AVCodec* codec, AVDictionary** options);

        [DllImport(DllName)]
        public static extern int av_read_frame(AVFormatContext* s, AVPacket* pkt);

        [DllImport(DllName)]
        public static extern void av_packet_unref(AVPacket* pkt);

        [DllImport(DllName)]
        public static extern AVFrame* av_frame_alloc();

        [DllImport(DllName)]
        public static extern SwsContext* sws_getContext(int srcW, int srcH, AVPixelFormat srcFormat,
            int dstW, int dstH, AVPixelFormat dstFormat, int flags, SwsFilter* srcFilter, SwsFilter* dstFilter, double* param);

        [DllImport(DllName)]
        public static extern int av_image_alloc(byte_ptrArray4 pointers, int_array4 linesizes, int w, int h, AVPixelFormat pix_fmt, int align);

        [DllImport(DllName)]
        public static extern void sws_scale(SwsContext* c, byte_ptrArray4 srcSlice, int_array4 srcStride,
            int srcSliceY, int srcSliceH, byte_ptrArray4 dst, int_array4 dstStride);

        [DllImport(DllName)]
        public static extern void sws_freeContext(SwsContext* swsContext);

        [DllImport(DllName)]
        public static extern void av_frame_free(AVFrame** frame);

        [DllImport(DllName)]
        public static extern void avcodec_free_context(AVCodecContext** avctx);

        [DllImport(DllName)]
        public static extern void avformat_close_input(AVFormatContext** s);

        [DllImport(DllName)]
        public static extern void av_freep(void* ptr);
    }

    public enum AVMediaType
    {
        AVMEDIA_TYPE_UNKNOWN = -1,
        AVMEDIA_TYPE_VIDEO,
        AVMEDIA_TYPE_AUDIO,
        AVMEDIA_TYPE_DATA,
        AVMEDIA_TYPE_SUBTITLE,
        AVMEDIA_TYPE_ATTACHMENT,
        AVMEDIA_TYPE_NB
    }

    public enum AVCodecID
    {
        AV_CODEC_ID_NONE,

        /* video codecs */
        AV_CODEC_ID_MPEG1VIDEO,
        AV_CODEC_ID_MPEG2VIDEO, ///< preferred ID for MPEG-1/2 video decoding
        AV_CODEC_ID_H261,
        AV_CODEC_ID_H263,
        AV_CODEC_ID_RV10,
        AV_CODEC_ID_RV20,
        AV_CODEC_ID_MJPEG,
        AV_CODEC_ID_MJPEGB,
        AV_CODEC_ID_LJPEG,
        AV_CODEC_ID_SP5X,
        AV_CODEC_ID_JPEGLS,
        AV_CODEC_ID_MPEG4,
        AV_CODEC_ID_RAWVIDEO,
        AV_CODEC_ID_MSMPEG4V1,
        AV_CODEC_ID_MSMPEG4V2,
        AV_CODEC_ID_MSMPEG4V3,
        AV_CODEC_ID_WMV1,
        AV_CODEC_ID_WMV2,
        AV_CODEC_ID_H263P,
        AV_CODEC_ID_H263I,
        AV_CODEC_ID_FLV1,
        AV_CODEC_ID_SVQ1,
        AV_CODEC_ID_SVQ3,
        AV_CODEC_ID_DVVIDEO,
        AV_CODEC_ID_HUFFYUV,
        AV_CODEC_ID_CYUV,
        AV_CODEC_ID_H264,
        AV_CODEC_ID_INDEO3,
        AV_CODEC_ID_VP3,
        AV_CODEC_ID_THEORA,
        AV_CODEC_ID_ASV1,
        AV_CODEC_ID_ASV2,
        AV_CODEC_ID_FFV1,
        AV_CODEC_ID_4XM,
        AV_CODEC_ID_VCR1,
        AV_CODEC_ID_CLJR,
        AV_CODEC_ID_MDEC,
        AV_CODEC_ID_ROQ,
        AV_CODEC_ID_INTERPLAY_VIDEO,
        AV_CODEC_ID_XAN_WC3,
        AV_CODEC_ID_XAN_WC4,
        AV_CODEC_ID_RPZA,
        AV_CODEC_ID_CINEPAK,
        AV_CODEC_ID_WS_VQA,
        AV_CODEC_ID_MSRLE,
        AV_CODEC_ID_MSVIDEO1,
        AV_CODEC_ID_IDCIN,
        AV_CODEC_ID_8BPS,
        AV_CODEC_ID_SMC,
        AV_CODEC_ID_FLIC,
        AV_CODEC_ID_TRUEMOTION1,
        AV_CODEC_ID_VMDVIDEO,
        AV_CODEC_ID_MSZH,
        AV_CODEC_ID_ZLIB,
        AV_CODEC_ID_QTRLE,
        AV_CODEC_ID_TSCC,
        AV_CODEC_ID_ULTI,
        AV_CODEC_ID_QDRAW,
        AV_CODEC_ID_VIXL,
        AV_CODEC_ID_QPEG,
        AV_CODEC_ID_PNG,
        AV_CODEC_ID_PPM,
        AV_CODEC_ID_PBM,
        AV_CODEC_ID_PGM,
        AV_CODEC_ID_PGMYUV,
        AV_CODEC_ID_PAM,
        AV_CODEC_ID_FFVHUFF,
        AV_CODEC_ID_RV30,
        AV_CODEC_ID_RV40,
        AV_CODEC_ID_VC1,
        AV_CODEC_ID_WMV3,
        AV_CODEC_ID_LOCO,
        AV_CODEC_ID_WNV1,
        AV_CODEC_ID_AASC,
        AV_CODEC_ID_INDEO2,
        AV_CODEC_ID_FRAPS,
        AV_CODEC_ID_TRUEMOTION2,
        AV_CODEC_ID_BMP,
        AV_CODEC_ID_CSCD,
        AV_CODEC_ID_MMVIDEO,
        AV_CODEC_ID_ZMBV,
        AV_CODEC_ID_AVS,
        AV_CODEC_ID_SMACKVIDEO,
        AV_CODEC_ID_NUV,
        AV_CODEC_ID_KMVC,
        AV_CODEC_ID_FLASHSV,
        AV_CODEC_ID_CAVS,
        AV_CODEC_ID_JPEG2000,
        AV_CODEC_ID_VMNC,
        AV_CODEC_ID_VP5,
        AV_CODEC_ID_VP6,
        AV_CODEC_ID_VP6F,
        AV_CODEC_ID_TARGA,
        AV_CODEC_ID_DSICINVIDEO,
        AV_CODEC_ID_TIERTEXSEQVIDEO,
        AV_CODEC_ID_TIFF,
        AV_CODEC_ID_GIF,
        AV_CODEC_ID_DXA,
        AV_CODEC_ID_DNXHD,
        AV_CODEC_ID_THP,
        AV_CODEC_ID_SGI,
        AV_CODEC_ID_C93,
        AV_CODEC_ID_BETHSOFTVID,
        AV_CODEC_ID_PTX,
        AV_CODEC_ID_TXD,
        AV_CODEC_ID_VP6A,
        AV_CODEC_ID_AMV,
        AV_CODEC_ID_VB,
        AV_CODEC_ID_PCX,
        AV_CODEC_ID_SUNRAST,
        AV_CODEC_ID_INDEO4,
        AV_CODEC_ID_INDEO5,
        AV_CODEC_ID_MIMIC,
        AV_CODEC_ID_RL2,
        AV_CODEC_ID_ESCAPE124,
        AV_CODEC_ID_DIRAC,
        AV_CODEC_ID_BFI,
        AV_CODEC_ID_CMV,
        AV_CODEC_ID_MOTIONPIXELS,
        AV_CODEC_ID_TGV,
        AV_CODEC_ID_TGQ,
        AV_CODEC_ID_TQI,
        AV_CODEC_ID_AURA,
        AV_CODEC_ID_AURA2,
        AV_CODEC_ID_V210X,
        AV_CODEC_ID_TMV,
        AV_CODEC_ID_V210,
        AV_CODEC_ID_DPX,
        AV_CODEC_ID_MAD,
        AV_CODEC_ID_FRWU,
        AV_CODEC_ID_FLASHSV2,
        AV_CODEC_ID_CDGRAPHICS,
        AV_CODEC_ID_R210,
        AV_CODEC_ID_ANM,
        AV_CODEC_ID_BINKVIDEO,
        AV_CODEC_ID_IFF_ILBM,
        AV_CODEC_ID_IFF_BYTERUN1,
        AV_CODEC_ID_KGV1,
        AV_CODEC_ID_YOP,
        AV_CODEC_ID_VP8,
        AV_CODEC_ID_PICTOR,
        AV_CODEC_ID_ANSI,
        AV_CODEC_ID_A64_MULTI,
        AV_CODEC_ID_A64_MULTI5,
        AV_CODEC_ID_R10K,
        AV_CODEC_ID_MXPEG,
        AV_CODEC_ID_LAGARITH,
        AV_CODEC_ID_PRORES,
        AV_CODEC_ID_JV,
        AV_CODEC_ID_DFA,
        AV_CODEC_ID_WMV3IMAGE,
        AV_CODEC_ID_VC1IMAGE,
        AV_CODEC_ID_UTVIDEO,
        AV_CODEC_ID_BMV_VIDEO,
        AV_CODEC_ID_VBLE,
        AV_CODEC_ID_DXTORY,
        AV_CODEC_ID_V410,
        AV_CODEC_ID_XWD,
        AV_CODEC_ID_CDXL,
        AV_CODEC_ID_XBM,
        AV_CODEC_ID_ZEROCODEC,