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• Trying to use openH264 as an alternative to libX264 in FFMPEG C project

  5 décembre 2015, par Tishu

  I have an application that transcodes a video frame by frame using FFMPEG and x264 encoder. I am looking to release this application but the licensing of x264 made me switch to using openh264 instead.

  I managed to compile everything smoothly (openh264 then FFMPEG with enable-openh264). I am now trying to correct the encoder setup in my C code as what worked for libx264 doesn’t work anymore. Unfortunately I found very limited C/C++ examples of FFMPEG/openh264, i would appreciate any link/hint.

  I am using the following code (dec_ctx is the AVCodecContext of the video I am decoding)

              enc_ctx->height = dec_ctx->height;
  
              enc_ctx->width = dec_ctx->width;
  
              enc_ctx->sample_aspect_ratio = dec_ctx->sample_aspect_ratio;
  
              /* take first format from list of supported formats */
  
              enc_ctx->pix_fmt = encoder->pix_fmts[0];
  
              /* video time_base can be set to whatever is handy and supported by encoder */
  
              enc_ctx->time_base = dec_ctx->time_base;
  
  
  
              enc_ctx->gop_size      = 120; /* emit one intra frame every twelve frames at most */
  
              enc_ctx->max_b_frames = 16;
  
              enc_ctx->scenechange_threshold = 0;
  
              enc_ctx->rc_buffer_size = 0;
  
              enc_ctx->me_method = ME_ZERO;
  
  
  
              enc_ctx->ticks_per_frame = dec_ctx->ticks_per_frame * ifmt_ctx->streams[i]->time_base.den * ifmt_ctx->streams[i]->r_frame_rate.num/ifmt_ctx->streams[i]->r_frame_rate.den;
  
              // Set Ultrafast profile. internal name for this preset is baseline
  
              av_opt_set(enc_ctx->priv_data, "preset", "placebo", AV_OPT_SEARCH_CHILDREN);

  I get the following errors in the output with the [OpenH264] tag :

  [OpenH264] this = 0x0000000019C126C0, Warning:bEnableFrameSkip = 0,bitrate can't be controlled for RC_QUALITY_MODE,RC_BITRATE_MODE and RC_TIMESTAMP_MODE without enabling skip frame.
  
  Output #0, mp4, to 'C:\Dev\temp\geoVid.mp4':
  
  Stream #0:0: Video: h264 (libopenh264), yuv420p, 720x480, q=2-31, 200 kb/s, 90k tbn, 180k tbc
  
  Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp, 96 kb/s
  
  [OpenH264] this = 0x0000000019C126C0, Warning:Actual input framerate fAverageFrameRate = 0.000000 is quite different from framerate in setting 60.000000, please check setting or timestamp unit (ms), start_Ts = 0
  
  [OpenH264] this = 0x0000000019C126C0, Warning:Actual input framerate fAverageFrameRate = 0.000000 is quite different from framerate in setting 60.000000, please check setting or timestamp unit (ms), start_Ts = 0

  The output video file just plays black frames. Any hint or link to some doc would be appreciated. I have been trying to understand these errors but not too sure how to enable "skip frame" or why it is complaining about my input framerate (this is the same input as when I encode successfully with libx264)

• FFMPEG Always Show On New Window

  11 avril 2022, par Teguh.Saint

  Yesterday I tried to run an old version of ffmpeg, with new windows. everything works fine, and ffmpeg wants to run in the same command line window. but after i try the new version of ffmpeg, ffmpeg doesn't run in the same window. and that was not long, after appearing he immediately disappeared.
After that I decided to use the old version of ffmpeg, but it had the same effect and the result was the same.
Can anyone here give me a solution ? I only want ffmpeg to run on one command prompt window.

  


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• Matomo’s 2021 Year in Review

  13 décembre 2021, par erin — Community

  2021 has been an exciting year at Matomo !

  We’re grateful for all community members who reported feedback and suggestions, our awesome team of translators for their work, and our Premium features customers and Matomo Cloud hosting customers for their amazing support. 

  We wanted to share some quick highlights to remind you of the exciting things that happened in 2021.

  Matomo continues to develop

  In 2021 we released a number of new features including :

  • SEO Web Vitals

  The new SEO Web Vitals feature helps you track your critical website performance metrics, which are a core element of SEO best practice.

  

  • Advertising Conversion Export 

  Measure the performance of your ads without giving up privacy.

  This exciting new feature supports privacy and compliance requirements by eliminating the need to put third-party advertising tracking codes on your site. Now marketers can easily import conversion data from Matomo into Google Ads, Microsoft Advertising or Yandex Ads.

  • Tracking Spam Prevention 

  Say goodbye to spammers & bots making your data inaccurate and say hello to reliable data. 

  This powerful plugin provides our self-hosting users various options to prevent spammers and bots from making data inaccurate so you can rely on your data again.

  • In 2021 we moved from Matomo 4.1.0 to Matomo 4.6.0, with our new releases delivering over 600 updates to improve the stability and functionality of the product.

  Some of our team’s favourite updates in 2021 included :

  • • Graphs now show a difference for data of “unfinished” and “complete” periods, with unfinished periods now indicated by a dashed line.
    • Improvements to Matomo Tag Manager’s debugger – now you can simply enter the URL in a form and click Debug.
    • Dashboards now show proportional evolution comparison for incomplete periods (rather than absolute values).
     
  • We also rolled out general bug fixes in Matomo Mobile 2.5 for iOS and Android.
  • Continuous improvements to Matomo for WordPress. 

  In other news

  • Au revoir, tracking consent. France’s data protection authority, Commission nationale de l’informatique et des libertés (CNIL), announced that Matomo is now exempt from tracking consent in France (under conditions).
  • We lowered the pricing for Matomo Cloud, the starting price is now 19 EUR or 19 USD per month.
  • For our self-hosting users, we introduced a 30-day Free Trial for Marketplace Premium Plugins. 

  If you haven’t explored our Marketplace yet, some of our most popular plugins include :

  • • Form Analytics
    • Search Engine Keyword Performance
    • Heatmaps and Session Recordings
     
  • Out of a substantial list of 320 products, Matomo was recognised by Capterra as a leading global Web Analytics Software solution for 2021.

  Matomo Community working together

  MatomoCamp 2021 was a massive success thanks to our passionate community, sponsors and speakers. This virtual event was run by the Matomo Community, for the Matomo Community. 

  

  Some of the most popular sessions included :

  • How to stay compliant with privacy regulations with Matomo 
  • Use Matomo properly for SEO (German)
  • How does risk for a DPO differ from classical risk perceptions ?
  • Are we there yet ? The present & future of surveillance societies
  • How to manage a Matomo with millions of pageviews per month ?

  All MatomoCamp sessions are now available on-demand. Enjoy !

  More people are choosing ethical analytics 

  We surpassed the incredible milestone of 30K active Matomo for WordPress installations.

  How can you get involved in 2022 ?

  Our mission at Matomo is :

  “To create, as a community, the leading open digital analytics platform, that gives every user full control of their data”

  Join our mission by writing about Matomo on your blog, website, Twitter, talk at conferences or let your friends and colleagues know what is Matomo. 

  Use the Matomo forum if you have any questions or feedback (free support), or purchase a Support Plan to get professional support and guidance.

  To improve Matomo in your language, consider contributing to translations.

  You can also support our efforts by purchasing Premium Features for Matomo or try our Matomo Cloud solution.

  Thank you for being part of our Matomo community, we wish you all the best for 2022 !