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• Blog series part 1 : How to use Matomo to increase customer acquisitions for your business

  2 septembre 2020, par Joselyn Khor — Analytics Tips, Marketing
  Are you investing time and money into marketing your business and unsure if it’s paying off ? Web analytics provides the tools and insights to help you know which marketing channels to target and focus on. Without it you might be going in blind and missing opportunities that might’ve been easily found in your metrics.

  Increasing acquisition cheat sheet

  To increase customer acquisition on your website you need to first attract the right visitors to your website. Then capturing their attention and engaging them in your content. Finally you’ll want to convert by driving them through a streamlined funnel/buyer’s journey on your website all backed up by data.

  So, how do you attract audiences to your site with a web analytics tool like Matomo ?

  1. Figure out who your audience is through the Visitor Profiles feature. 
  2. Calculate the Cost of Customer Acquisition (CAC) to plan for growth. To grow and make your business/website sustainable, you’ll need to earn more money from a customer than you spend on acquiring them. How to calculate : Divide marketing spend by the number of customers acquired. 
  3. Figure out which marketing channels e.g., social media, PPC, SEO, content marketing, etc., you should invest more in and which of those you should focus less on.

  How to increase acquisitions with Matomo

  1. Use the Acquisitions feature
  2. Use funnels
  3. Study Visitor Profiles
  4. Focus on SEO efforts
  5. Look at the Multi Attribution feature
  6. Set goals
  7. Set Advanced eCommerce reporting

  1. Use the Acquisitions feature

  Matomo Analytics has a dedicated Acquisition feature to help with some of the heavy-lifting, making it easy for you to formulate targeted acquisition plans.

  

  This feature helps you learn who your potential customers are and figure out what marketing channels are converting the best for these visitors.

  • Learn what traffic you get from external websites : Knowing who’s helping you succeed from external websites is a crucial step to be able to focus your attention. Paid sponsorships, guest blog posts or even spending more on advertising on the particular website could result in greater traffic.

  • Social Networks : See which social media channels are connecting with the audiences you want. Take the guesswork out by using only the ones you need. By finding out which social channels your ideal audience prefers, you can generate shareable, convincing and engaging content to drive shares and traffic through to your site.

  • Campaigns : Your marketing team may have spent precious time and resource coming up with campaigns that are designed to succeed, but how can you be so sure ? With Campaigns you can understand what marketing campaigns are working, what aren’t, and shift your marketing efforts accordingly to gain more visitors, more effectively, with less costs. Keep track of every ad and content piece you display across internal and external channels to see which is having the biggest impact on your business objectives. Learn more

  

  Watch this video to learn about the Acquisitions feature

  2. Use funnels

  Creating conversion funnels gives you the big picture on whether your acquisition plans are paying off and where they may be falling short.

  

  If the ultimate goal of your site is to drive conversions, then each funnel can tell you how effectively you’re driving traffic through to your desired outcome.

  By integrating this with Visitor Profiles, you can view historic visitor profiles of any individual user at any stage of the conversion funnel. You see the full user journey at an individual level, including where they entered the funnel from and where they exited. Learn more

  How to amplify acquisition strategies with Funnels : Use conversion funnels to guide acquisition as you can tell which entry point is bringing the most success and which one needs more attention. Tailor your strategies to zone in on areas that have the most potential. You can identify where your visitors are encountering obstacles from the start, that are stopping them from progressing through their journey on your site.

  3. Study Visitor Profiles

  Visitor Profiles helps you understand visitors on a user-by-user basis, detailing each visitors’ history into a profile which summarises every visit, action and purchase made.

  

  Better understand :

  • Why your visitors viewed your website.

  • Why your returning visitors continue to view your website.

  • What specifically your visitors are looking for and whether they found it on your website.

  The benefit is being able to see how a combination of acquisition channels play a part in a single buyer’s journey.

  How Visitor Profiles helps with acquisition : By understanding the full behavioural patterns of any individual user coming through from external channels, you’ll see the path that led them to take action, where they may have gotten lost, and how engaged they are with your business over time. This gives you an indication of what kinds of visitors you’re attracting and helps you craft a buyer persona that more accurately reflects the audience most interested in you.

  TRY IT FOR FREE

  4. Focus on SEO efforts

  Every acquisition plan needs a focus on maximising your Search Engine Optimization (SEO) efforts. When it comes to getting conclusive search engine referrer metrics, you need to be sure you’re getting ALL the insights to drive your SEO strategy.

  Integrate Google, Bing and Yahoo search consoles directly into your Matomo Analytics. This helps kickstart your acquisition goals as you rank highly for keywords that get the most traffic to your website.

  As another major SEO benefit, you can see how the most important search keywords to your business increased and decreased in ranking over time. 

  How to amplify acquisitions strategies with search engines and keywords : By staying on top of your competitors across ALL search engines, you may uncover traffic converting highly from one search engine, or find you could be losing traffic and business opportunities to your competitors across others.

  5. Look at the Multi Attribution feature

  Multi Attribution lets you measure the success of every touchpoint in the customer journey.

  

  Accurately measure (and assign value to) channels where visitors first engaged with your business, where they came from after that, as well as the final channel they came from before purchasing your product or service.

  No longer falsely over-estimate any marketing channel and make smarter decisions when determining acquisition spend to accurately calculate the Customer Acquisition Cost (CAC). Learn more

  6. Set your Goals

  What are the acquisition goals you want to achieve the most ? The Goals feature lets you measure the most important metrics you need to grow your business.

  

  Goals are crucial for building your marketing strategy and acquiring new customers. The more goals you track, the more you can learn about behavioural changes as you implement and modify paths that impact acquisition and conversions over time. You’ll understand which channels are converting the best for your business, which cities/countries are most popular, what devices will attract the most visitors and how engaged your visitors are before converting.

  This way you can see if your campaigns (SEO, PPC, signups, blogs etc.) or optimising efforts (A/B Testing, Funnels) have made an impact with the time and investment you have put in. Learn more

  7. Set Advanced Ecommence reporting

  If your website’s overall purpose is to generate revenue whether it be from an online store, asking for donations or from an online paid membership site ; the Ecommerce feature gives you comprehensive insights into your customers’ purchasing behaviours.

  

  When you use Ecommerce analytics, you heavily reduce risk when marketing your products to potential customers because you will understand who to target, what to target them with and where further opportunities exist to have the greatest impact for your business. Learn more

  Key takeaway

  Having the tools to ensure you’re creating a well planned acquisition strategy is key to attracting and capturing the attention of potential visitors/leads, and then driving them through a funnel/buyer’s journey on your website. Because of Matomo’s reputation as a trusted analytics platform, the features above can be used to assist you in making smarter data-driven decisions. You can pursue different acquisition avenues with confidence and create a strategy that’s agile and ready for success, all while respecting user privacy.

  TRY IT FOR FREE

  Want to learn how to increase engagement with Matomo ? Look out for part 2 ! We’ll go through how you can boost engagement on your website via web analytics.

• ffmpeg bitrate/quality selection

  18 octobre 2020, par user209405

  I'm attempting to copy videos from a site. They are stored in 6 different resolutions, as an hls stream format. When I use the command ffmpeg -i http://c.brightcove.com/services/mobile/streaming/index/master.m3u8?videoId=5506754630001 -c copy output.ts I get the highest quality (1280x720). However, when I wget the .m3u8 I can see there are other qualities but am having trouble with how to copy those quality (i.e. 640x380). the original link is http://www.sportsnet.ca/hockey/nhl/analyzing-five-potential-trade-destinations-matt-duchene/.

  



  I'm hoping someone can help me out with this. Thank you.

  


• libavcodec : how to encode with h264 codec ,with mp4 container using controllable frame rate and bitrate(through c code)

  26 mai 2016, par musimbate

  I am trying to record the screen of a pc and encode the recorded frames using h264 encoder
  and wrap them into a mp4 container.I want to do this because this super user link http://superuser.com/questions/300897/what-is-a-codec-e-g-divx-and-how-does-it-differ-from-a-file-format-e-g-mp/300997#300997 suggests it allows good trade-off between size and quality of the output file.

  The application I am working on should allow users to record a few hours of video and have the minimum output file size with decent quality.

  The code I have cooked up so far allows me to record and save .mpg(container) files with the mpeg1video encoder

  Running :

  ffmpeg -i test.mpg

  on the output file gives the following output :

   [mpegvideo @ 028c7400] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mpegvideo, from 'test.mpg':
  
    Duration: 00:00:00.29, bitrate: 104857 kb/s
  
      Stream #0:0: Video: mpeg1video, yuv420p(tv), 1366x768 [SAR 1:1 DAR 683:384], 104857 kb/s, 25 fps, 25 tbr, 1200k tbn, 25 tbc

  I have these settings for my output :

   const char * filename="test.mpg";
  
      int codec_id= AV_CODEC_ID_MPEG1VIDEO;
  
      AVCodec *codec11;
  
      AVCodecContext *outContext= NULL;
  
      int got_output;
  
      FILE *f;
  
      AVPacket pkt;
  
      uint8_t endcode[] = { 0, 0, 1, 0xb7 };
  
  
  
      /* put sample parameters */
  
      outContext->bit_rate = 400000;
  
      /* resolution must be a multiple of two */
  
      outContext->width=pCodecCtx->width;
  
      outContext->height=pCodecCtx->height;
  
      /* frames per second */
  
      outContext->time_base.num=1;
  
      outContext->time_base.den=25;
  
      /* emit one intra frame every ten frames
  
       * check frame pict_type before passing frame
  
       * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
  
       * then gop_size is ignored and the output of encoder
  
       * will always be I frame irrespective to gop_size
  
       */
  
      outContext->gop_size = 10;
  
      outContext->max_b_frames = 1;
  
      outContext->pix_fmt = AV_PIX_FMT_YUV420P;

  When I change int codec_id= AV_CODEC_ID_MPEG1VIDEO to int codec_id= AV_CODEC_ID_H264 i get a file that does not play with vlc.

  I have read that writing the

  uint8_t endcode[] = { 0, 0, 1, 0xb7 };

  array at the end of your file when finished encoding makes your file a legitimate mpeg file.It is written like this :

   fwrite(endcode, 1, sizeof(endcode), f);
  
      fclose(f);

  in my code. Should I do the same thing when I change my encoder to AV_CODEC_ID_H264 ?

  I am capturing using gdi input like this :

  AVDictionary* options = NULL;
  
      //Set some options
  
      //grabbing frame rate
  
      av_dict_set(&options,"framerate","30",0);
  
      AVInputFormat *ifmt=av_find_input_format("gdigrab");
  
      if(avformat_open_input(&pFormatCtx,"desktop",ifmt,&options)!=0){
  
          printf("Couldn't open input stream.\n");
  
          return -1;
  
          }

  I want to be able to modify my grabbing rate to optimize for the outptut file size
  but When I change it to 20 for example I get a video that plays so fast.How do
  I get a video that plays with normal speed with frames captured at 20 fps or any
  lower frame rate value ?

  While recording I get the following output on the standard error output :

  [gdigrab @ 00cdb8e0] Capturing whole desktop as 1366x768x32 at (0,0)
  
  Input #0, gdigrab, from '(null)':
  
    Duration: N/A, start: 1420718663.655713, bitrate: 1006131 kb/s
  
      Stream #0:0: Video: bmp, bgra, 1366x768, 1006131 kb/s, 29.97 tbr, 1000k tbn, 29.97 tbc
  
  [swscaler @ 00d24120] Warning: data is not aligned! This can lead to a speedloss
  
  [mpeg1video @ 00cdd160] AVFrame.format is not set
  
  [mpeg1video @ 00cdd160] AVFrame.width or height is not set
  
  [mpeg1video @ 00cdd160] AVFrame.format is not set
  
  [mpeg1video @ 00cdd160] AVFrame.width or height is not set
  
  [mpeg1video @ 00cdd160] AVFrame.format is not set

  How do I get rid of this error in my code ?

  In summary :
  1) How do I encode h264 video wrapped into mp4 container ?

  2) How do I capture at lower frame rates and still play
  the encoded video at normal speed ?

  3) How do I set the format(and which format—depends on the codec ?)
  and width and height info on the frames I write ?

  The code I am using in its entirety is shown below

  extern "C"
  
  {
  
  #include "libavcodec/avcodec.h"
  
  #include "libavformat/avformat.h"
  
  #include "libswscale/swscale.h"
  
  #include "libavdevice/avdevice.h"
  
  
  
  
  
  #include <libavutil></libavutil>opt.h>
  
  #include <libavutil></libavutil>channel_layout.h>
  
  #include <libavutil></libavutil>common.h>
  
  #include <libavutil></libavutil>imgutils.h>
  
  #include <libavutil></libavutil>mathematics.h>
  
  #include <libavutil></libavutil>samplefmt.h>
  
  //SDL
  
  #include "SDL.h"
  
  #include "SDL_thread.h"
  
  }
  
  
  
  //Output YUV420P
  
  #define OUTPUT_YUV420P 0
  
  //'1' Use Dshow
  
  //'0' Use GDIgrab
  
  #define USE_DSHOW 0
  
  
  
  int main(int argc, char* argv[])
  
  {
  
  
  
      //1.WE HAVE THE FORMAT CONTEXT
  
      //THIS IS FROM THE DESKTOP GRAB STREAM.
  
      AVFormatContext *pFormatCtx;
  
      int             i, videoindex;
  
      AVCodecContext  *pCodecCtx;
  
      AVCodec         *pCodec;
  
  
  
      av_register_all();
  
      avformat_network_init();
  
  
  
      //ASSIGN STH TO THE FORMAT CONTEXT.
  
      pFormatCtx = avformat_alloc_context();
  
  
  
      //Register Device
  
      avdevice_register_all();
  
      //Windows
  
  #ifdef _WIN32
  
  #if USE_DSHOW
  
      //Use dshow
  
      //
  
      //Need to Install screen-capture-recorder
  
      //screen-capture-recorder
  
      //Website: http://sourceforge.net/projects/screencapturer/
  
      //
  
      AVInputFormat *ifmt=av_find_input_format("dshow");
  
      //if(avformat_open_input(&amp;pFormatCtx,"video=screen-capture-recorder",ifmt,NULL)!=0){
  
      if(avformat_open_input(&amp;pFormatCtx,"video=UScreenCapture",ifmt,NULL)!=0){
  
          printf("Couldn't open input stream.\n");
  
          return -1;
  
      }
  
  #else
  
      //Use gdigrab
  
      AVDictionary* options = NULL;
  
      //Set some options
  
      //grabbing frame rate
  
      av_dict_set(&amp;options,"framerate","30",0);
  
      //The distance from the left edge of the screen or desktop
  
      //av_dict_set(&amp;options,"offset_x","20",0);
  
      //The distance from the top edge of the screen or desktop
  
      //av_dict_set(&amp;options,"offset_y","40",0);
  
      //Video frame size. The default is to capture the full screen
  
      //av_dict_set(&amp;options,"video_size","640x480",0);
  
      AVInputFormat *ifmt=av_find_input_format("gdigrab");
  
      if(avformat_open_input(&amp;pFormatCtx,"desktop",ifmt,&amp;options)!=0){
  
          printf("Couldn't open input stream.\n");
  
          return -1;
  
      }
  
  
  
  #endif
  
  #endif//FOR THE WIN32 THING.
  
  
  
      if(avformat_find_stream_info(pFormatCtx,NULL)&lt;0)
  
      {
  
          printf("Couldn't find stream information.\n");
  
          return -1;
  
      }
  
      videoindex=-1;
  
      for(i=0; inb_streams; i++)
  
          if(pFormatCtx->streams[i]->codec->codec_type
  
                  ==AVMEDIA_TYPE_VIDEO)
  
          {
  
              videoindex=i;
  
              break;
  
          }
  
      if(videoindex==-1)
  
      {
  
          printf("Didn't find a video stream.\n");
  
          return -1;
  
      }
  
      pCodecCtx=pFormatCtx->streams[videoindex]->codec;
  
      pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
  
      if(pCodec==NULL)
  
      {
  
          printf("Codec not found.\n");
  
          return -1;
  
      }
  
      if(avcodec_open2(pCodecCtx, pCodec,NULL)&lt;0)
  
      {
  
          printf("Could not open codec.\n");
  
          return -1;
  
      }
  
  
  
      //THIS IS WHERE YOU CONTROL THE FORMAT(THROUGH FRAMES).
  
      AVFrame *pFrame;
  
  
  
      pFrame=av_frame_alloc();
  
  
  
      int ret, got_picture;
  
  
  
      AVPacket *packet=(AVPacket *)av_malloc(sizeof(AVPacket));
  
  
  
      //TRY TO INIT THE PACKET HERE
  
       av_init_packet(packet);
  
  
  
  
  
      //Output Information-----------------------------
  
      printf("File Information---------------------\n");
  
      av_dump_format(pFormatCtx,0,NULL,0);
  
      printf("-------------------------------------------------\n");
  
  
  
  
  
  //&lt;&lt;--FOR WRITING MPG FILES
  
      //&lt;&lt;--START:PREPARE TO WRITE YOUR MPG FILE.
  
  
  
      const char * filename="test.mpg";
  
      int codec_id= AV_CODEC_ID_MPEG1VIDEO;
  
  
  
  
  
  
  
      AVCodec *codec11;
  
      AVCodecContext *outContext= NULL;
  
      int got_output;
  
      FILE *f;
  
      AVPacket pkt;
  
      uint8_t endcode[] = { 0, 0, 1, 0xb7 };
  
  
  
      printf("Encode video file %s\n", filename);
  
  
  
      /* find the mpeg1 video encoder */
  
      codec11 = avcodec_find_encoder((AVCodecID)codec_id);
  
      if (!codec11) {
  
          fprintf(stderr, "Codec not found\n");
  
          exit(1);
  
      }
  
  
  
      outContext = avcodec_alloc_context3(codec11);
  
      if (!outContext) {
  
          fprintf(stderr, "Could not allocate video codec context\n");
  
          exit(1);
  
      }
  
  
  
      /* put sample parameters */
  
      outContext->bit_rate = 400000;
  
      /* resolution must be a multiple of two */
  
  
  
      outContext->width=pCodecCtx->width;
  
      outContext->height=pCodecCtx->height;
  
  
  
  
  
      /* frames per second */
  
      outContext->time_base.num=1;
  
      outContext->time_base.den=25;
  
  
  
      /* emit one intra frame every ten frames
  
       * check frame pict_type before passing frame
  
       * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
  
       * then gop_size is ignored and the output of encoder
  
       * will always be I frame irrespective to gop_size
  
       */
  
      outContext->gop_size = 10;
  
      outContext->max_b_frames = 1;
  
      outContext->pix_fmt = AV_PIX_FMT_YUV420P;
  
  
  
      if (codec_id == AV_CODEC_ID_H264)
  
          av_opt_set(outContext->priv_data, "preset", "slow", 0);
  
  
  
      /* open it */
  
      if (avcodec_open2(outContext, codec11, NULL) &lt; 0) {
  
          fprintf(stderr, "Could not open codec\n");
  
          exit(1);
  
      }
  
  
  
      f = fopen(filename, "wb");
  
      if (!f) {
  
          fprintf(stderr, "Could not open %s\n", filename);
  
          exit(1);
  
      }
  
  
  
  
  
      AVFrame *outframe = av_frame_alloc();
  
      int nbytes = avpicture_get_size(outContext->pix_fmt,
  
                                     outContext->width,
  
                                     outContext->height);
  
  
  
      uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes);
  
  
  
     //ASSOCIATE THE FRAME TO THE ALLOCATED BUFFER.
  
      avpicture_fill((AVPicture*)outframe, outbuffer,
  
                     AV_PIX_FMT_YUV420P,
  
                     outContext->width, outContext->height);
  
  
  
      SwsContext* swsCtx_ ;
  
      swsCtx_= sws_getContext(pCodecCtx->width,
  
                              pCodecCtx->height,
  
                              pCodecCtx->pix_fmt,
  
                              outContext->width, outContext->height,
  
                              outContext->pix_fmt,
  
                              SWS_BICUBIC, NULL, NULL, NULL);
  
  
  
  
  
      //HERE WE START PULLING PACKETS FROM THE SPECIFIED FORMAT CONTEXT.
  
      while(av_read_frame(pFormatCtx, packet)>=0)
  
      {
  
          if(packet->stream_index==videoindex)
  
          {
  
              ret= avcodec_decode_video2(pCodecCtx,
  
                                           pFrame,
  
                                           &amp;got_picture,packet );
  
              if(ret &lt; 0)
  
              {
  
                  printf("Decode Error.\n");
  
                  return -1;
  
              }
  
              if(got_picture)
  
              {
  
  
  
              sws_scale(swsCtx_, pFrame->data, pFrame->linesize,
  
                    0, pCodecCtx->height, outframe->data,
  
                    outframe->linesize);
  
  
  
  
  
              av_init_packet(&amp;pkt);
  
              pkt.data = NULL;    // packet data will be allocated by the encoder
  
              pkt.size = 0;
  
  
  
  
  
              ret = avcodec_encode_video2(outContext, &amp;pkt, outframe, &amp;got_output);
  
              if (ret &lt; 0) {
  
                 fprintf(stderr, "Error encoding frame\n");
  
                 exit(1);
  
                }
  
  
  
              if (got_output) {
  
                  printf("Write frame %3d (size=%5d)\n", i, pkt.size);
  
                  fwrite(pkt.data, 1, pkt.size, f);
  
                  av_free_packet(&amp;pkt);
  
                 }
  
  
  
              }
  
          }
  
  
  
          av_free_packet(packet);
  
      }//THE LOOP TO PULL PACKETS FROM THE FORMAT CONTEXT ENDS HERE.
  
  
  
  
  
  
  
      //
  
      /* get the delayed frames */
  
      for (got_output = 1; got_output; i++) {
  
          //fflush(stdout);
  
  
  
          ret = avcodec_encode_video2(outContext, &amp;pkt, NULL, &amp;got_output);
  
          if (ret &lt; 0) {
  
              fprintf(stderr, "Error encoding frame\n");
  
              exit(1);
  
          }
  
  
  
          if (got_output) {
  
              printf("Write frame %3d (size=%5d)\n", i, pkt.size);
  
              fwrite(pkt.data, 1, pkt.size, f);
  
              av_free_packet(&amp;pkt);
  
          }
  
      }
  
  
  
  
  
  
  
      /* add sequence end code to have a real mpeg file */
  
      fwrite(endcode, 1, sizeof(endcode), f);
  
      fclose(f);
  
  
  
      avcodec_close(outContext);
  
      av_free(outContext);
  
      //av_freep(&amp;frame->data[0]);
  
      //av_frame_free(&amp;frame);
  
  
  
      //THIS WAS ADDED LATER
  
      av_free(outbuffer);
  
  
  
      avcodec_close(pCodecCtx);
  
      avformat_close_input(&amp;pFormatCtx);
  
  
  
      return 0;
  
  }

  Thank you for your time.