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• FFmpeg Degrades Quality of Video

  31 mars 2015, par elliotsandbox

  I have been tasked with converting a batch of videos from MOV to MP4 for an application my company is building. We’re converting the videos because a short MOV file has an extremely large file size (well over five hundred megabytes), obviously not what we want for a mobile application. Now I tried directly converting MOV to MP4 however FFmpeg produces broken MP4 files. I overcame this by converting MOV to AVI then the AVI to MP4. Huzza ! It works, however the quality is slightly degraded.

  Here is the code I am executing to convert the videos, it’s in Lua.

  os.execute(("./ffmpeg/ffmpeg -i %s %s/%s.avi"):format(inputDir[video], finalDirectory, friendlyName))
  
  os.execute(("./ffmpeg/ffmpeg -i %s/%s.avi %s/%s.mp4"):format(finalDirectory, friendlyName, finalDirectory, friendlyName))
  
  os.execute(("rm -r %s/%s.avi"):format(finalDirectory, friendlyName))

  I’ve had a look around and see that I should look at codecs and stuff. However my mind comes to a complete blank when it comes to codecs. I am certain that all I need is an extra parameter and the videos will just be fine.

  Any help is greatly appreciated !

• The ultimate solution to knowing how your business is performing overall

  8 janvier 2018, par InnoCraft

  Would you like to know how your business is performing overall at a glance ? Guess what, you can now do this easily with Roll-Up Reporting.

  What is Roll-Up Reporting about ?

  Roll-Up Reporting is a premium feature which you can acquire through the Matomo (Piwik) Marketplace. Developed by InnoCraft, the professional company behind Matomo, this plugin will :

  1. Save you heaps of time and gives you completely new insights
  2. Make this process easy as pie
  3. Reflect the structure of your business or organization

  1 – Roll-Up Reporting does the maths for you

  Yes, you read it right. Compared to having to sum reports of multiple websites manually, you can get aggregated results for your business or departments instantly with a single click directly in Matomo (Piwik). Not only does this save you heaps of time compared to doing this complicated work in a spreadsheet, you also avoid human errors. With this feature, you get a clear overview over all your websites, apps, and shops performances.

  For example, if you want to know which referrers bring you the most value across all websites, then you will get the answer in a report. Same results for e-commerce reports, actions, and other metrics.

  2 – Easy as pie, no tracking code involved

  The best part of this feature is that you do not need to push data through additional tracking code. The setup is simple and made through the UI of the plugin.

  3 – Roll-Up Reporting meets even the hardest requirements

  You can also create “nested roll-ups”. This feature allows you to create a roll-up consisting of several other roll-ups. With a nested roll-up, you can create a roll-up for each department in your company (and assign all the websites of a department to that roll-up), then group several departments easily into a new roll-up simply by assigning several department roll-ups to this new roll-up.

  

  For example, a company with multiple brands can assign multiple websites to each brand, and then get aggregated results for each brand and for the business overall. As a roll-up is basically the same as a website, you can give users access to a roll-up without having to give them access to each site, and the other way around.

  How does it work ?

  As with all premium features, this plugin is straightforward to use. Once activated in your Matomo (Piwik) administrator panel, you will notice that when you add a website, you have the choice between two possibilities :

  

  When you select the “Roll-Up” option, a new window will appear asking you which websites and mobile apps you would like to aggregate into a roll-up :

  

  The created roll-up will then be shown just like any other website that you have in Matomo (Piwik). You can create as many roll-up entities as you want.

  

  Features, such as custom alerts, segments, and e-mail reports work for a roll-up just like for any website.

  Real-Time reports

  One of the most interesting features of Roll-Up Reporting is, that you can view all the Real-Time reports, such as the “Visitors in Real-Time” widget, the “Real-Time Map”, and the “Visitor Log” across several websites making it much easier to keep an eye on your business :

  

  How to get the Roll-up reporting plugin ?

  Developed by InnoCraft, the makers of Matomo (Piwik), Roll-Up Reporting is a premium feature which you can purchase on the Matomo Marketplace. You can also try it for free on the Matomo Cloud (formerly Piwik Cloud) for 30 days.

  Learn more about the Roll-Up Reporting feature

  The post The ultimate solution to knowing how your business is performing overall appeared first on Analytics Platform - Matomo.

• How to merge .ts files from a DLINK security camera losslessly ?

  13 juin 2022, par anjchang

  I have >1000s of small .ts files from a DLINK camera of a theft that occured. I first tried to merge the ts files into bigger files so that I could look for the audio where the relevant event occurred. Then in Premiere I looked for the highest sustained audio peaks (it was someone using a saw to cut out a catalytic converter). Then, I isolated the relevant 200 files where things happened on the timeline. But now, I want to export the 20 minutes of the incident with the least compression (or no compression). Apparently Adobe Premiere can export the whole timeline containing these clips, but will compress them. I have not edited any of the files, so I don't want any rendering. I just want them strung together in a "well-known" format so I can send the files to the insurance company and authorities.

  


  I used an answer from here but there were audio gaps. Some of the files had no audio, causing the problem when I first merged the files with :

  


   for i in `\ls *.ts | sort -V`; do echo "file '$i'"; done >> mylist.txt;ffmpeg -f concat -i mylist.txt -c copy -bsf:a aac_adtstoasc video.mp4