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• Grow your business and understand your conversion funnel with Funnels for Piwik

  14 décembre 2016, par InnoCraft — Plugins

  Hi, this is Tom from InnoCraft. The company of the makers of Piwik.

  No matter what type of website or app you have, whether you are trying to get your users to sign up for something or sell products, there is a certain number of steps your visitors have to go through. I bet the same applies to you.

  Have you ever wondered if your visitors or users actually follow that path in your website or app ? And wondered where you lose your visitors ? Where they maybe get confused ? Want to see when something is not working anymore ? Maybe you have a multi step signup form or onboarding process ? On every step you lose visitors and therefore potential revenue and conversions. It’s critical to know how well your visitors go through these steps, where they originally came from and where they go to when they drop off.

  If you are wondering about such things like we do, or want to drive your conversions and sales, we have something for you.

  -> Read the rest of the story on the Funnels Marketplace page.

  What does the new Funnel report look like ?

  Here is below just a little preview of the Funnel report.

  

  You get this funnel report for each of your goals so you can optimise each of your conversion funnels.

  Where do I get Funnel for Piwik ?

  Funnels is available on the Piwik Marketplace :

  Get Funnel on the Marketplace

  Funnels is premium plugin for Piwik and comes with our 14 day money back guarantee and 1-click installation & updates (all product updates come for free).

  You can also signup for a free Piwik Cloud-hosted trial to discover the power of Funnels !

• After ffmpeg encode, AVPacket pts and dts is AV_NOPTS_VALUE

  29 novembre 2017, par Li Zehan

  I would like to ask a question about ffmpeg when i use encoder (x264).

  this is my code :

  int
  
  FFVideoEncoder::init(AVCodecID codecId, int bitrate, int fps, int gopSize,
  
                       int width, int height, AVPixelFormat format) {
  
      release();
  
  
  
      const AVCodec *codec = avcodec_find_encoder(codecId);
  
      m_pCodecCtx = avcodec_alloc_context3(codec);
  
      m_pCodecCtx->width = width;
  
      m_pCodecCtx->height = height;
  
      m_pCodecCtx->pix_fmt = format;
  
      m_pCodecCtx->bit_rate = bitrate;
  
      m_pCodecCtx->thread_count = 5;
  
      m_pCodecCtx->max_b_frames = 0;
  
      m_pCodecCtx->gop_size = gopSize;
  
  
  
      m_pCodecCtx->time_base.num = 1;
  
      m_pCodecCtx->time_base.den = fps;
  
  
  
      //H.264
  
      if (m_pCodecCtx->codec_id == AV_CODEC_ID_H264) {
  
  //        av_dict_set(&opts, "preset", "slow", 0);
  
          av_dict_set(&m_pEncoderOpts, "preset", "superfast", 0);
  
          av_dict_set(&m_pEncoderOpts, "tune", "zerolatency", 0);
  
  
  
          m_pCodecCtx->flags |= CODEC_FLAG_GLOBAL_HEADER;
  
          m_pCodecCtx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
  
      }
  
      int ret = avcodec_open2(m_pCodecCtx, m_pCodecCtx->codec, &m_pEncoderOpts);
  
      if (ret == 0) {
  
          LOGI("open avcodec success!");
  
      } else {
  
          LOGE("open avcodec error!");
  
          return -1;
  
      }
  
      return ret;
  
  }
  
  
  
  int FFVideoEncoder::encode(const Frame &inFrame, AVPacket *outPacket) {
  
      AVFrame *frame = av_frame_alloc();
  
  //    avpicture_fill((AVPicture *) frame, inFrame.getData(), AV_PIX_FMT_YUV420P, inFrame.getWidth(),
  
  //                   inFrame.getHeight());
  
      av_image_fill_arrays(frame->data, frame->linesize, inFrame.getData(), m_pCodecCtx->pix_fmt,
  
                           inFrame.getWidth(), inFrame.getHeight(), 1);
  
  
  
      int ret = 0;
  
      ret = avcodec_send_frame(m_pCodecCtx, frame);
  
      if (ret != 0) {
  
          LOGE("send frame error! %s", av_err2str(ret));
  
      } else {
  
          ret = avcodec_receive_packet(m_pCodecCtx, outPacket);
  
          LOGI("extract data size = %d", m_pCodecCtx->extradata_size);
  
          if (ret != 0) {
  
              LOGE("receive packet error! %s", av_err2str(ret));
  
          }
  
      };
  
      av_frame_free(&frame);
  
      return ret;
  
  }

  I expect that the AVPacket will carry the pts and dts about this frame.

  but in fact, i only can get encoded frame data and size.

  //====================================

  except this question, i have another quesiont :

  x264 docs say that "tune" opts can be set like film、animation and others. but i only can get a normal video when i set "zerolatency" params. When i set others opts, video’s bitrate is very low.

  Thanks your answer.

• how to make the script re-ask for the input again after failure ?

  6 avril 2022, par Rami Magdi

  this some script for ffmpeg that i added to windows context menu
so i just copy paste what i want done
when this .bat fails [wrong argument for instance ] it closes and i have to restart it
how to make the script re-ask for the input again after failure ?

  


  @echo off
echo    -------------------------------------------------------------
echo                             FILTERS
echo    -------------------------------------------------------------
echo,
echo   VERTICAL FLIP=    -lavfi vflip
echo   HORIZONTAL FLIP=  -lavfi hflip
echo   NEGAT COLORS=     -lavfi Enegate
echo   NEGATE LUMINANCE= -lavfi lutyuv=y=negval
echo   GRAYSCALE=        -lavfi hue=s=0
echo   ISOLATE COLOR=    -lavfi colorhold=color="orange":similarity=0.29:blend=0
echo   PS CURVES PRESET= -lavfi curves=psfile='MyCurvesPresets/purple.acv'
echo   VIGNETTE EFFECT=  -lavfi vignette=PI/4
echo   LOOKUP TABLE=     -lavfi lut3d=c\\:/nnn/ggg.cube
echo   SPEED UP OR SLOW DOWN=    -lavfi setpts=PTS/2
echo   SPEED UP VIDEOS, AUDIOS=  -lavfi "[0:v]setpts=PTS/2[v];[0:a]atempo=2.0[a]" -map "[v]" -map "[a]"
echo   REVERSE=     -lavfi reverse
echo   POSTERIZE=   -lavfi elbg=l=8:n=1
echo   MOTION BLUR= -lavfi tmix=frames=20:weights="10 1 1"
echo   HARD SUB=    -lavfi subtitles=s.ass
echo   SOFT SUB=    -scodec mov_text -metadata:s:s:0 language=eng
echo   ONE IMAGE=   -lavfi -frames 1
echo   AN IMAGE EVERY 60 SEC= -lavfi fps=1/60
echo   ONLY IFRAMES= -skip_frame nokey
echo   GIF=    -lavfi "fps=10,scale=320:-2:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0
echo   STACKS= -lavfi "[0:v][1:v][2:v][3:v]xstack=inputs=4:layout=0_0|w0_0|0_h0|w0_h0[v]" -map "[v]"
echo   EMBED THUMBNAIL = -i 1.jpg -map 0:0 -map 0:1 -map 1 -c:0 copy -c:v:1 png -disposition:v:1 attached_pic
ECHO,
echo    -------------------------------------------------------------
echo                             CODEC OPTIONS
echo    -------------------------------------------------------------
echo,
echo   -lavfi "[0:v]scale=-2:720,setpts=PTS/1.5[v];[0:a]atempo=1.5[a]" -map "[v]" -map "[a]" -crf 40 -preset ultrafast
echo   -map 0 -codec copy
echo   -acodec copy -vcodec libx264 -vsync cfr -crf 20 -pix_fmt yuv420p -tune film -preset veryfast -movflags +faststart
echo   -acodec aac -ac 2 -ab 128k -ar 44100 / -acodec libmp3lame -ab 320k -ar 44100 -id3v2_version 3 
echo   -qscale:v 2
echo,


  


  the main part :

  


  set /P extra="ENTER CODEC OPTIONS="

echo,
echo Processing "%~nx1"
echo Output will be "%~n1"_output.mp4"
ffmpeg -v error -stats -y -i "%~1"  %extra%  "%~n1"_output.mp4
pause