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• Call for Speakers : Share Your Voice at MatomoCamp 2025 !

  10 juillet, par Alex Carmona

  MatomoCamp is back for its 2025 edition — and the Call for Speakers is now open until July 31st !

  As proud sponsors of this unique, community-driven event, we’re excited to invite experts, enthusiasts, and curious minds to contribute to MatomoCamp 2025, the annual online gathering dedicated to web analytics, open source, digital privacy, and of course — Matomo. MatomoCamp is the premier free online conference for the Matomo Analytics community in Europe, sponsored by Matomo Analytics. Taking place online on Wednesday 26 November 2025 from 9:30 AM to 5:30 PM CET, this event brings together professionals passionate about ethical analytics, data privacy, and building a better web.

  Whether you’re a long-time user, developer, marketer, researcher, or just someone with a fresh perspective on ethical analytics, your voice belongs at MatomoCamp. Last year, we welcomed over 1,000 attendees from around the world. This year, we’re aiming even higher with an expanded programme designed to serve everyone from analytics beginners to enterprise architects.

  What is MatomoCamp ?

  MatomoCamp is a free, fully online event bringing together the global Matomo community. Across two days of talks, panels, demos, and workshops, participants explore :

  • Web analytics & measurement
  • Digital marketing & SEO
  • Open source projects & collaboration
  • Privacy-first data strategies
  • Case studies, experiments, and more

  With sessions in English, French, German, and beyond, MatomoCamp aims to make digital analytics more accessible, ethical, and transparent for everyone.

  MatomoCamp returns this November 2025 with an exciting new vision. For the first time, we’re expanding beyond purely technical content to welcome speakers from all backgrounds who can contribute insights on analytics, privacy, marketing, and the ethical web. Whether you’re a developer, marketer, analyst, or privacy advocate, we want to hear from you.

  Who can apply ?

  Anyone ! We’re looking for people from all backgrounds who want to share :

  • A practical tip or use case with Matomo
  • Insights into digital analytics, privacy, or open source
  • A success (or failure !) story from your own journey
  • A workshop or hands-on demonstration
  • A bold opinion on the future of web data
  • A behind-the-scenes look at your work or research

  You don’t have to be a professional speaker. We welcome first-time speakers, underrepresented voices, and community members who want to share something valuable — no matter how niche or broad.

  What makes a great talk ?

  There’s no one right formula. But here’s what works well :

  • Real-world experience
  • Specific, actionable insights
  • A clear structure (15–45 minutes)
  • Something you care deeply about
  • A story only you can tell

  And remember — this isn’t just about Matomo. Topics that touch on ethical analytics, open source values, or digital sovereignty are more than welcome.

  Key info

  • Where : Online (free & open to all)
  • When : November 2025 (exact dates to be announced)
  • Languages : English, French, German (other languages welcome !)
  • Deadline to apply : July 31, 2025
  • Submit your talk here

  Why does this matter ?

  At Matomo, we believe that data should empower, not exploit. MatomoCamp is more than just an event — it’s a celebration of what’s possible when communities come together to build a better digital future.

  As sponsors, we’re proud to support this independent, open source event. But more importantly, we want to amplify your voice — because every perspective shared brings us closer to a more ethical, transparent, and inclusive analytics ecosystem.

  Have a story to share ?

  Don’t overthink it. If it matters to you, it will matter to someone else. Apply to speak before July 31st and join us at MatomoCamp 2025 !

  Submit your session here !

  Let’s build the future of analytics — together.

  

• Issue with yt-dlp and FFMPEG Converting Webm to MP4 for 360 video : Unsupported channel layout "ambisonic 1"

  22 janvier 2024, par William L W L

  I am trying to convert .webm files to mp4. These are 360 videos that have been downloaded using yt-dlp.

  


  I have been using this command successfully, but it does not work on an M2 macbook pro. It works fine on PC.

  


  ffmpeg -y -i "/Users/x/Movies/Tropical_Rainforest_360.webm" -c:v libx265 -preset fast -crf 21 -vf "scale=4096x4096:out_range=full" -pix_fmt yuvj420p -aspect 1:1 -movflags faststart "/Users/x/Movies/Tropical_Rainforest_360.mp4"


  


  The error messages are as follows :

  


  [aac @ 0x12ae1fea0] Unsupported channel layout "ambisonic 1"
[aac @ 0x12ae1fea0] Qavg: nan
[aost#0:1/aac @ 0x12ae1fc30] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height.
Error while filtering: Invalid argument
[swscaler @ 0x110dd0000] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x120158000] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x130208000] deprecated pixel format used, make sure you did set range correctly
    Last message repeated 1 times
[out#0/mp4 @ 0x600003f8c480] Nothing was written into output file, because at least one of its streams received no packets.
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=N/A bitrate=N/A speed=N/A    
Conversion failed!



  


  Context : I work in an educational setting which caters for vulnearble pupils. We cannot use Youtube in real time, this is mainly due to adverts or suggested videos that may trigger our pupils. Some children have mental health issues. Some children have also not been outdoors for several months/years due to medical conditions. We use 360 videos and VR to help bring the outside world inside, The YoutubeVR app is not an option since there is no way to install adblockers.

  


  The same script above works fine on a PC virtual machine which I can remote into from my Mac.

  


• Curator of the Samples Archive

  13 mai 2011, par Multimedia Mike — General

  Remember how I mirrored the world-famous MPlayerHQ samples archive a few months ago ? Due to a series of events, the original archive is no longer online. However, me and the people who control the mplayerhq.hu domain figured out how to make samples.mplayerhq.hu point to samples.multimedia.cx.

  That means... I’m the current owner and curator of our central multimedia samples repository. Such power ! This should probably be the fulfillment of a decade-long dream for me, having managed swaths of the archive, most notably the game formats section.

  How This Came To Be

  If you pay any attention to the open source multimedia scene, you might have noticed that there has been a smidge of turmoil. Heated words were exchanged, authority was questioned, some people probably said some things they didn’t mean, and the upshot is that, where once there was one project (FFmpeg), there are now 2 projects (also Libav). And to everyone who has wanted me to mention it on my blog— there, I finally broke my silence and formally acknowledged the schism.

  For my part, I was just determined to ensure that the samples archive remained online, preferably at the original samples.mplayerhq.hu address. There are 10 years worth of web links out there pointing into the original repository.

  Better Solution

  I concede that it’s not entirely optimal to host the repository here at multimedia.cx. While I can offer a crazy amount of monthly bandwidth, I can’t offer rsync (invaluable for keeping mirrors in sync), nor can the server provide anonymous FTP or allow me to offer accounts to other admins who can manage the repository.

  The samples archive is also mirrored at samples.libav.org/samples. I understand that service is provided by VideoLAN. Right now, both repositories are known to be static. I’m open to brainstorms about how to improve the situation.