ffmpeg avcodec_encode_video在控制檯應用程序崩潰

Question

我想製作一個編碼器，將原始圖像編碼爲h263格式。但是加載並初始化ffmpeg庫後，我碰到了一個演示圖像的avcodec_encode_video。

int _tmain(int argc, _TCHAR* argv[]) { 
    avcodec_register_all(); 
    AVCodec *codec; 
    AVCodecContext *c= NULL; 
    int i, ret, x, y, got_output; 
    FILE *f; 
    AVFrame *frame; 
    AVPacket pkt; 

    int out_size, size, outbuf_size; 

    AVFrame *picture; 
    uint8_t *outbuf, *picture_buf; 

    AVRational rp; 

    rp.den = 1; 
    rp.num = 25; 
    uint8_t endcode[] = { 0, 0, 1, 0xb7 }; 

    codec = avcodec_find_encoder(CODEC_ID_H263); 

    c = avcodec_alloc_context3(codec); 
    picture= avcodec_alloc_frame(); 
    c->bit_rate = 400000; 
    /* resolution must be a multiple of two */ 
    c->width = 352; 
    c->height = 288; 
    /* frames per second */ 
    //c->time_base= (AVRational){1,25}; 
    c->time_base = rp; 
    c->gop_size = 10; /* emit one intra frame every ten frames */ 
    c->max_b_frames=1; 
    c->pix_fmt = PIX_FMT_YUV420P; 
    avcodec_open(c, codec); 


    outbuf_size = 100000; 
    outbuf = (uint8_t*)malloc(outbuf_size); 
    size = c->width * c->height; 
    picture_buf = (uint8_t*)malloc((size * 3)/2); /* size for YUV 420 */ 

    picture->data[0] = picture_buf; 
    picture->data[1] = picture->data[0] + size; 
    picture->data[2] = picture->data[1] + size/4; 
    picture->linesize[0] = c->width; 
    picture->linesize[1] = c->width/2; 
    picture->linesize[2] = c->width/2; 

    /* encode 1 second of video */ 
    for(i=0;i<25;i++) { 
     fflush(stdout); 
     /* prepare a dummy image */ 
     /* Y */ 
     for(y=0;y<c->height;y++) { 
      for(x=0;x<c->width;x++) { 
       picture->data[0][y * picture->linesize[0] + x] = x + y + i * 3; 
      } 
     } 
     /* Cb and Cr */ 
     for(y=0;y<c->height/2;y++) { 
      for(x=0;x<c->width/2;x++) { 
       picture->data[1][y * picture->linesize[1] + x] = 128 + y + i * 2; 
       picture->data[2][y * picture->linesize[2] + x] = 64 + x + i * 5; 
      } 
     } 
     /* encode the image */ 

     **Crash is here** --->     /////////////////////////////////////////////////// 
     out_size = avcodec_encode_video(c, outbuf, outbuf_size, picture); 

     printf("encoding frame %3d (size=%5d)\n", i, out_size); 
     fwrite(outbuf, 1, out_size, f); 
    } 
    /* get the delayed frames */ 
    for(; out_size; i++) { 
     fflush(stdout); 
     out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL); 
     printf("write frame %3d (size=%5d)\n", i, out_size); 
     fwrite(outbuf, 1, out_size, f); 
    } 
    /* add sequence end code to have a real mpeg file */ 
    outbuf[0] = 0x00; 
    outbuf[1] = 0x00; 
    outbuf[2] = 0x01; 
    outbuf[3] = 0xb7; 
    fwrite(outbuf, 1, 4, f); 
    fclose(f); 
    free(picture_buf); 
    free(outbuf); 

    avcodec_close(c); 
    av_free(c); 
    av_free(picture); 
    printf("\n"); 
    return 0; 
} 

Answer 1

我的問題通過添加新的ffmpeg庫解決。

希望它有助於other.Please是最新的。