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• How do I compile the x264 encoder with Visual studio 2013 ? [on hold]

  26 avril 2015, par Pazuzukin

  Is it possible to build the x264 encoder with Visual Studio 2013 community edition, and if it is what are the steps to build the x264 encoder with VS2013? I'm running Windows 7 Profession 64 bit and Visual Studio 2013 Community

• How to encode the input images from camera into H.264 stream ?

  22 avril 2015, par kuu

  I'm trying to encode the input images from MacBook Pro's built-in FaceTime HD Camera into an H.264 video stream in real time using the libx264 on Mac OS X 10.9.5.

  Below are the steps I took:

  1. Get 1280x720 32BGRA images from camera at 15fps using AVFoundation API (AVCaptureDevice class, etc.)
  2. Convert the images into 320x180 YUV420P format using libswscale.
  3. Encode the images into an H.264 video stream (baseline profile) using libx264.

  I apply the above steps each time the image is obtained from the camera, believing that the encoder keeps track of the encoding state and generates a NAL unit when it's available.

  As I wanted to get the encoded frames while providing the input images to the encoder, I decided to flush the encoder (calling x264_encoder_delayed_frames()) every 30 frames (2 seconds).

  However, when I restart the encoding, the encoder stops after a while (x264_encoder_encode() never returns.) I tried changing the number of frames before flushing, but the situation didn't change.

  Below are the related code (I omitted the image capture code because it looks no problem.)

  Can you point out anything I might be doing wrong?

  x264_t *encoder;
  x264_param_t param;
  
  // Will be called only first time.
  int initEncoder() {
    int ret;
  
    if ((ret = x264_param_default_preset(&param, "medium", NULL)) < 0) {
      return ret;
    }
  
    param.i_csp = X264_CSP_I420;
    param.i_width  = 320;
    param.i_height = 180;
    param.b_vfr_input = 0;
    param.b_repeat_headers = 1;
    param.b_annexb = 1;
  
    if ((ret = x264_param_apply_profile(&param, "baseline")) < 0) {
      return ret;
    }
  
    encoder = x264_encoder_open(&param);
    if (!encoder) {
      return AVERROR_UNKNOWN;
    }
  
    return 0;
  }
  
  // Will be called from encodeFrame() defined below.
  int convertImage(const enum AVPixelFormat srcFmt, const int srcW, const int srcH, const uint8_t *srcData, const enum AVPixelFormat dstFmt, const int dstW, const int dstH, x264_image_t *dstData) {
    struct SwsContext *sws_ctx;
    int ret;
    int src_linesize[4];
    uint8_t *src_data[4];
  
    sws_ctx = sws_getContext(srcW, srcH, srcFmt,
                         dstW, dstH, dstFmt,
                         SWS_BILINEAR, NULL, NULL, NULL);
  
    if (!sws_ctx) {
      return AVERROR_UNKNOWN;
    }
  
    if ((ret = av_image_fill_linesizes(src_linesize, srcFmt, srcW)) < 0) {
      sws_freeContext(sws_ctx);
      return ret;
    }
  
    if ((ret = av_image_fill_pointers(src_data, srcFmt, srcH, (uint8_t *) srcData, src_linesize)) < 0) {
      sws_freeContext(sws_ctx);
      return ret;
    }
  
    sws_scale(sws_ctx, (const uint8_t * const*)src_data, src_linesize, 0, srcH, dstData->plane, dstData->i_stride);
    sws_freeContext(sws_ctx);
    return 0;
  }
  
  // Will be called for each frame.
  int encodeFrame(const uint8_t *data, const int width, const int height) {
    int ret;
    x264_picture_t pic;
    x264_picture_t pic_out;
    x264_nal_t *nal;
    int i_nal;
  
    if ((ret = x264_picture_alloc(&pic, param.i_csp, param.i_width, param.i_height)) < 0) {
      return ret;
    }
  
    if ((ret = convertImage(AV_PIX_FMT_RGB32, width, height, data, AV_PIX_FMT_YUV420P, 320, 180, &pic.img)) < 0) {
      x264_picture_clean(&pic);
      return ret;
    }
  
    if ((ret = x264_encoder_encode(encoder, &nal, &i_nal, &pic, &pic_out)) < 0) {
      x264_picture_clean(&pic);
      return ret;
    }
  
    if(ret) {
      for (int i = 0; i < i_nal; i++) {
        printNAL(nal + i);
      }
    }
  
    x264_picture_clean(&pic);
    return 0;
  }
  
  // Will be called every 30 frames.
  int flushEncoder() {
    int ret;
    x264_nal_t *nal;
    int i_nal;
    x264_picture_t pic_out;
  
    /* Flush delayed frames */
    while (x264_encoder_delayed_frames(encoder)) {
      if ((ret = x264_encoder_encode(encoder, &nal, &i_nal, NULL, &pic_out)) < 0) {
        return ret;
      }
  
      if (ret) {
        for (int j = 0; j < i_nal; j++) {
          printNAL(nal + j);
        }
      }
    }
  }
  

• Windows : can't generate libx264.dll because MinGW : not c compiler found

  21 avril 2015, par Sandie C

  It's my first post in a forum ever (and in english...) Any suggestion is welcomed.

  So let's started !

  My global goal is to recorder/transcoding and dispay an IP Camera stream from a .bat whitch calling vlc. (I tried before doing it with VLC interface and it's going well. I don't understand why the encoder is missing using that way)

  I want an asf container containing h264 and aac.

  ---

  .bat :

  cd C:\Program Files (x86)\VideoLAN\VLC

  vlc rtsp://root:root@ip_adresse/media.amp --sout "#transcode{ vcodec=x264, vb=112 , acodec==aac, fps=25}:duplicate{dst=display,dst=standard{access=file,mux = asf,dst=flux.asf}" -v

  ---

  when I first execute this, VLC told me that H264 encoder was not found, so I decided to compile x264.

  I used this link

  http://www.ayobamiadewole.com/Blog/How-to-build-x264-or-libx264.dll-in-Windows

  I succeed to make the .exe but and when I got to

  ./configure --disable-cli --enable-shared --extra-ldflags=-Wl,--output-def=libx264.def

  minGW shell indicates : not working c compiler found

  I tried to find some answer, but i didn't found a good one.

  Does anyone have an idea of what i'm doing wrong ?

  Is it possible that my gcc (4.6) is not the good one ? What should I do ?

  Need another advice : When I would have this libx264.ddl where should I put it to make my script working ?

  Early thanks for your answers.

• Can't generate libx264.dll. MinGW : not c Compiler found

  20 avril 2015, par Sandie C

  It's my first post in a forum ever (and in english...) Any suggestion is welcomed.

  So let's started !

  My global goal is to recorder/transcoding and dispay an IP Camera stream from a .bat whitch calling vlc.

  I want an asf container containing h264 and aac.

  ---

  .bat :

  cd C:\Program Files (x86)\VideoLAN\VLC

  vlc rtsp://root:root@ip_adresse/media.amp --sout "#transcode{ vcodec=x264, vb=112 , acodec==aac, fps=25}:duplicate{dst=display,dst=standard{access=file,mux = asf,dst=flux.asf}" -v

  ---

  when I first execute this, VLC told me that H264 encoder was not found, so I decided to compile x264.

  I followed this link

  http://www.ayobamiadewole.com/Blog/How-to-build-x264-or-libx264.dll-in-Windows

  I succeed to make the .exe but and when I got to

  ./configure --disable-cli --enable-shared --extra-ldflags=-Wl,--output-def=libx264.def

  minGW shell indicates : not working c compiler found

  I tried to find some answer, but i didn't found a good one.

  Does anyone have an idea of what i'm doing wrong ?

• Can't generate libx264.dll

  20 avril 2015, par Sandie C

  It's my first post in a forum ever (and in english...) Any suggestion is welcomed.

  So let's started !

  My global goal is to recorder/transcoding and dispay an IP Camera stream from a .bat whitch calling vlc.

  I want an asf container containing h264 and aac.

  ---

  .bat :

  cd C:\Program Files (x86)\VideoLAN\VLC

  vlc rtsp://root:root@ip_adresse/media.amp --sout "#transcode{ vcodec=x264, vb=112 , acodec==aac, fps=25}:duplicate{dst=display,dst=standard{access=file,mux = asf,dst=flux.asf}" -v

  ---

  when i first execute this, VLC told me that H264 encoder was not found, so i decided to compile x264.

  I followed this link

  http://www.ayobamiadewole.com/Blog/How-to-build-x264-or-libx264.dll-in-Windows

  I success to make the .exe but and when I got to

  ./configure --disable-cli --enable-shared --extra-ldflags=-Wl,--output-def=libx264.def

  minGW shell indicates : not working c compiler found

  I tried to find some answer, but i didn't found a good one.

  Does anyone have an idea of what i'm doing wrong ?