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• ffmpeg concat two video and add watermark after concating video give me blank mp4 file on server but in local working perfectly why ?

  22 février 2018, par Jinal Somaiya

  i have two video i want to concat them and then add watermark to them but after command run give me blank mp4 file on server but in local working perfectly and on server two video concat perfectly but after that code is not running.

  My code is as follows.

  $videoFileName = rand('111111', '999999').'_'.time().'.'.$request->file('video1')->getClientOriginalExtension();
  
      $intermediateVideo1 = rand('1111111', '9999999').'_'.time().'.ts';
  
      $intermediateVideo2 = rand('1111111', '9999999').'_'.time().'.ts';
  
      $concatVideoFileName = rand('111111', '999999').'_'.time().'.'.$request->file('video1')->getClientOriginalExtension();
  
  
  
      exec('ffmpeg -i '.$request->file('video1').' -c copy -bsf:v h264_mp4toannexb -f mpegts '.$intermediateVideo1);
  
      exec('ffmpeg -i '.$request->file('video2').' -c copy -bsf:v h264_mp4toannexb -f mpegts '.$intermediateVideo2);
  
      exec('ffmpeg -i "concat:'.$intermediateVideo1.'|'.$intermediateVideo2.'" -c copy -bsf:a aac_adtstoasc '.public_path('uploads/videos/'.$concatVideoFileName));
  
  
  
      exec('ffmpeg -i '.public_path('uploads/videos/'.$concatVideoFileName).' -i '.storage_path("assets/image/watermark.png").' -filter_complex "overlay" '.public_path('uploads/videos/'.$videoFileName));
  
  
  
  
  
      File::delete($intermediateVideo1);
  
      File::delete($intermediateVideo2);
  
      File::delete('uploads/videos/'.$concatVideoFileName);
  
  
  
      return response()->download(public_path('uploads/videos/'.$videoFileName));

  output of intermediate video1 :

  ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the
  FFmpeg developers built with gcc 5.4.0 (Ubuntu
  5.4.0-6ubuntu1 16.04.4) 20160609 configuration : —prefix=/usr —extra-version=0ubuntu0.16.04.1 —build-suffix=-ffmpeg —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —cc=cc —cxx=g++ —enable-gpl —enable-shared —disable-stripping —disable-decoder=libopenjpeg —disable-decoder=libschroedinger —enable-avresample —enable-avisynth —enable-gnutls —enable-ladspa —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libmodplug —enable-libmp3lame —enable-libopenjpeg —enable-libopus —enable-libpulse —enable-librtmp —enable-libschroedinger —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxvid —enable-libzvbi —enable-openal —enable-opengl —enable-x11grab —enable-libdc1394 —enable-libiec61883 —enable-libzmq —enable-frei0r —enable-libx264 —enable-libopencv libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 /
  56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 /
  53. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’storage/assets/video/vcs-ads.mp4’ : Metadata :
  major_brand : mp42
  minor_version : 0
  compatible_brands : mp42mp41isomavc1
  creation_time : 2018-01-29 00:23:59 Duration : 00:00:13.76, start : 0.000000, bitrate : 460 kb/s
  Stream #0:0(und) : Video : h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 640x360 [SAR 1:1 DAR 16:9], 327 kb/s, 29.97
  fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  Metadata :
  creation_time : 2018-01-29 00:23:59
  handler_name : L-SMASH Video Handler
  encoder : AVC Coding
  Stream #0:1(und) : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  Metadata :
  creation_time : 2018-01-29 00:23:59
  handler_name : L-SMASH Audio Handler Output #0, mpegts, to ’1234567_12324.ts’ : Metadata :
  major_brand : mp42
  minor_version : 0
  compatible_brands : mp42mp41isomavc1
  encoder : Lavf56.40.101
  Stream #0:0(und) : Video : h264 (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=2-31, 327 kb/s, 29.97 fps, 29.97 tbr,
  90k tbn, 30k tbc (default)
  Metadata :
  creation_time : 2018-01-29 00:23:59
  handler_name : L-SMASH Video Handler
  encoder : AVC Coding
  Stream #0:1(und) : Audio : aac (mp4a / 0x6134706D), 48000 Hz, stereo, 128 kb/s (default)
  Metadata :
  creation_time : 2018-01-29 00:23:59
  handler_name : L-SMASH Audio Handler Stream mapping : Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help frame= 412 fps=0.0 q=-1.0 Lsize= 898kB
  time=00:00:13.76 bitrate= 534.5kbits/s video:550kB audio:215kB
  subtitle:0kB other streams:0kB global headers:0kB muxing overhead :
  17.329643%

• How can i create an mp4 out of an image sequance

  9 août 2021, par KingOfTNT10

  I'm trying to create a program that I can give it a source folder (that contains for example jpeg images) and a destination folder (that the mp4 will go to) I want to be able to set a specific delay between every image so for example, the first image would be shown for 1 second and the second for 4 seconds

  


  I don't want to use FFmpeg I want to edit the image in the process so I'd rather have a for loop or something like that so I can edit every image

  


  I have tried using FFmpeg and moviepy I couldn't figure out how to do it
any ideas ?

  


• FFMPEG : RGB to YUV conversion by binary ffmpeg and by code C++ give different results

  15 mars 2015, par muocdich

  I am trying to convert RGB frames (ppm format) to YUV420P format using ffmpeg. To make sure that my code C++ is good , I compared the output with the one created by this command (the same filer BILINEAR) :
  ffmpeg -start_number 1 -i data/test512x512%d.ppm -sws_flags ’bilinear’ -pix_fmt yuv420p data/test-yuv420p.yuv

  My code :

  static unsigned char *readPPM(int i)
  
  {
  
    FILE *pF;
  
    unsigned char *imgRGB;
  
    unsigned char *imgBGR;
  
    int w,h;
  
    int c;
  
    int bit;
  
    char buff[16];
  
  
  
    char *filename;
  
    asprintf(&filename,"test512x512%d.ppm",i);
  
    pF = fopen(filename,"rb");
  
    free(filename);
  
  
  
    if (pF) {
  
      if (!fgets(buff, sizeof(buff), pF)) {
  
        return nullptr;
  
      }
  
      if (buff[0] != 'P' || buff[1] != '6') {
  
        fprintf(stderr, "Invalid image format (must be 'P6')\n");
  
      return nullptr;
  
    }
  
    c = getc(pF);
  
    while (c == '#') {
  
      while (getc(pF) != '\n') ;
  
        c = getc(pF);
  
    }
  
    ungetc(c, pF);
  
    // read size
  
    if (fscanf(pF, "%d %d", &w, &h) != 2) {
  
      fprintf(stderr, "Invalid image size (error loading '%s')\n", filename);
  
      return nullptr;
  
  
  
    }
  
    //read bit
  
    if (fscanf(pF, "%d", &bit) != 1) {
  
      fprintf(stderr, "Invalid rgb component (error loading '%s')\n", filename);
  
      exit(1);
  
    }
  
  
  
    imgRGB =(unsigned char*) malloc(3*h*w);
  
    imgBGR =(unsigned char*) malloc(3*h*w);
  
    //read pixel data from file
  
    int length = fread(imgBGR, sizeof(unsigned char)*3, w*h, pF) ;
  
    if (length != w*h) {
  
      fprintf(stderr, "Error loading image '%s'\n", filename);
  
      return nullptr;
  
    }
  
  
  
  
  
    int start=0;
  
    for (i=0; i < HEIGHT*WIDTH;i++) {
  
     imgRGB[start] = imgBGR[start];
  
     imgRGB[start+2]= imgBGR[start+2];
  
     imgRGB[start+1]= imgBGR[start+1];
  
     start+=3;
  
    }
  
  
  
    fclose(pF);
  
    free(imgBGR);
  
    return imgRGB;
  
  }
  
  else {
  
    return nullptr;
  
  }
  
  }
  
  
  
  void Test_FFMPEG::FillFrame (uint8_t* pic, int index)
  
  {
  
  
  
   avpicture_fill((AVPicture*)RGBFrame, pic, AV_PIX_FMT_RGB24, encodeContext->width, encodeContext->height);
  
  
  
    struct SwsContext* fooContext = sws_getContext(encodeContext->width, encodeContext->height,
  
    PIX_FMT_RGB24,
  
    encodeContext->width, encodeContext->height,
  
    PIX_FMT_YUV420P,
  
    SWS_BILINEAR  , nullptr, nullptr, nullptr);
  
    sws_scale(fooContext, RGBFrame->data, RGBFrame->linesize, 0, encodeContext->height, OrgFrame->data, OrgFrame->linesize);
  
  
  
    OrgFrame->pts = index;
  
  }

  The comparison result is not good. The are slight differences in Y and V but a lot in U. I cannot post my images but there is a part of Y is in U image. And it makes color change a little bit.

  Can you tell me where is my error ? Thanks you