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• How do I convert a .wav file to 16bit 44.1kz using ffmpeg or other utility [closed]

  26 mai 2023, par Seth Edwards

  A preface :
I am building an environment for a my own streaming box. Since building the UI. I turned to the now obsolete MSNTV box to find its UI sound effects.

  


  I found the dump on GitHub. I downloaded and located where the sounds where located.

  


  I listened to them one by one. I noticed that they are wave files. But they sound like they were low quality and may have been compressed before being turned into a wave file.

  


  I was using the Apple Files app on an iPhone 6s running iOS 15.7.1.

  


  They play back fine.

  


  I try importing them into GarageBand for iOS and it gives me an error saying that it only allows 16bit 44.1khz files. This confirmed my suspicion of it being low quality.

  


  I then tried playing them on a Dell Chromebook 3100 running ChromeOS. Chrome’s player would also not play the files.

  


  I need to find out how to convert them to 16bit 44.1khz wave files.

  


  My guess is that since the MSNTV had a small amount of storage space that they compressed the audio.

  


  I tried converting the files to mp3. And they are Noticeably worse.

  


  Does anyone know how to convert these files so they can be played back normally.

  


  In the end I plan to use these files and play them using the pygame library.

  


  I have tried changing the metadata

  


  Converting to mp3

  


• asm SIMD sniffer

  1er août 2023, par Андрей Тернити

  There is x264.
It use a lot of x86 asm files. For example pixel-32.asm.
This files can use different SIMD instruction set : mmx, 3DNow !, sse family, others

  


  I need the simple way to automatically analyze every file. I want get which SIMD family in which file are used. How ?

  


  I think every asm file must contain information about which SIMD family it use (or information that no SIMD). Without this information it is very bad idea try to use this files...
  
I am angry, my x86 CPU support mmx and 3DNow ! only, but x264 try call sse, so I get "Illegal instruction" sometimes. I plan to make patch for x264.

  


  P.S. If you can make issues in official repo let me know.

  


  P.P.S. This thread on Doom9 (mirror).

  


• What is the Best Approach for Storing and Displaying Video Files as Base64 in HTML for High Performance and Efficiency ? [closed]

  25 août 2023, par Barthez

  I'm currently working on a project where I need to allow users to upload videos, which will then be converted to Base64 and embedded within an HTML file. I'm reaching out to gain a better understanding of the best practices for accomplishing this task while adhering to Stack Overflow guidelines.Here's my plan so far:Video Upload : Users will be able to upload videos through a web interface.Conversion to Base64 : The uploaded video will be converted to Base64 using [specific library/tool].Embedding in HTML : The Base64 encoded video will be embedded within an HTML file using the tag.Before I proceed, I have a few questions:Are there any particular libraries or tools you recommend for converting videos to Base64 efficiently ?What are the potential performance implications of embedding Base64 videos in HTML files, especially considering large video files ?Are there any security concerns I should be aware of when implementing this process ?How can I ensure cross-browser compatibility when embedding these Base64 videos ?Are there any alternatives to this approach that might be more efficient or manageable ?I want to make sure I'm following best practices and avoiding any pitfalls, so any insights, tips would be greatly appreciated. Thank you for your time and assistance !

  


  I attempted to convert an uploaded video to Base64 and embed it within an HTML file.