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• Upload audio file, convert bitrate, save to S3 | server side options ?

  29 septembre 2011, par Jonathan Coe

  Currently using PHP 5.3.x & Fedora

  Ok. I'll try to keep this simple. I'm working on a tool that allows the upload & storing of audio files on S3 for playback. Essentially, the user uploads a file (currently only allowing mp3 & m4a) to the server, and the file is then pushed to S3 for storage via the PHP SDK for amazon aws.

  The missing link is that I would like to perform a simple bitrate & format conversion of the file prior to uploading the file. (ensuring that all files are 160kbs and .mp3).

  I've looked into ffmpeg, although it seems that the PHP library only allows for reading bitrates and other meta, not for actual conversion.

  Does anyone have any thoughts on the best way to approach this ? Would running a shell_exec() command that performs the conversion be sufficient to do this, or is there a more efficient/better way of doing this ?

  Thanks in advance ! Any help or advice is much appreciated.

• How to stream FFmpeg h.264 encoded output using UDP without the in-built UDP method

  19 juillet 2021, par guidingfox

  I am trying to create a remote desktop application and I have a pretty good idea on how I'll capture the screen, encode it to h.264 or HEVC and then write it to a file.

  


  In my case though, I want to have this encoded stream sent over UDP, but without the in-built streaming method of ffmpeg for better control over it.

  


  This is how I think it works, please correct me if I'm wrong :

  


   1. Capture and encode the video
 2. Poll the ffmpeg buffer for new frames. 
 3. Serialise the video
 4. create an RTP/RTSP packet 
 5. Stream that packet over UDP.


  


  But I am confused as to how I'll implement the steps 2-4 in code (C++).
I am not even sure if this is the right approach.

  


  So any help/resources to get me started on this would be greatly appreciated.

  


• How to implement in-browser video editing features in a React app ? [closed]

  21 mai, par Neeru Singh

  I'm building a React app that uses AI to generate short videos (reels, explainers, etc.). The generation works well, but I want users to edit the output directly in the browser.

  


  Key features I need in the frontend :

  


  Add/style captions

  


  Trim, split, and reorder clips

  


  Sync audio, apply transitions, and preview changes

  


  I'm considering a custom React-based editor with drag-and-drop, timeline editing, and real-time playback.

  


  Question :
What’s the best approach to implement these features in-browser using React ? Should I use with canvas/SVG overlays ? How do I handle accurate timeline syncing and user interactions ? Any architectural tips or examples would be helpful.