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• Is it still possible to compile modern x264 with the nal long start code used prior to release r1510 ?

  25 avril 2024, par Bryan Knowles

  I'm currently nerding out on old technology with HD-DVDs. The only freely available muxer is hddvdmux, I'm using MultiAVCHD for this.
Beginning with r1510, x264 switched to short start packets for NAL HRD (from what I understand). This makes the stream incompatible with hddvdmux.
deank on doom9 patched hddvdmux to accept short start codes, but in doing so, the video file plays too quickly and the audio goes out of sync.
The results I'm getting from the 2009 release of x264 leave much to be desired in comparison to modern releases, and I'd like to get those benefits while still maintaining compatibility with the original hddvdmux.
Is it possible ? If so... Any chance someone could compile a Windows binary for me with that change ? (I think it needs to be 32 bit, but not sure)

  


  I've tried multiple options with MultiAVCHD 4.1, fell back to 4.0 but am seeing weird rainbowing effects in the color from the extremely old version if x264. I admit I haven't dived in to programming, but seemed like a single change might be a reasonable request from someone already knowledgeable.

  


• iOS/Safari MediaRecorder Extremely Big File sizes with FFMPEG Or issue with MediaRecorder

  13 janvier 2021, par Dean Van Greunen

  Having an issue where the output video size of the converted video is 0.

  


  however i believe that the issue is with the mediarecorder code :

  


  recorder = new MediaRecorder(this.stream, { mimeType: "video/webm;codecs=vp9" });
recorder.ondataavailable = async (e) => {
  const payload = e.data;
  let y = blob2base64(payload);
  // take y and transfer to server, (on server decode base64 string and append that to the video file)
}


  


  I have the MediaRecorder API Enabled via the safari and iOS settings.

  


  for example after processing and saving the data chunks for the video that has been captured. Weird is that the video is blank but when using ffprobe, all the info is correct. so i'm stuffed.

  


  Here is the Captured Video (Before conversion)

  


  after conversion, the new file is 0 bytes big

  


  Note :
this works fine on windows and linux.
issue is only with iOS or MacOS

  


  Not sure what i am doing long.

  


• FFMPEG Incorrect File Output Path

  3 avril 2016, par Benny Chen

  I’am working in windows 7 32bit and trying to stream file with ffmpeg, but the output file keep going on wrong location.

  If I use this code :

  ffmpeg -i input -c:v copy -c:a copy output.mp4

  The output file will be saved in /Users/username

  If I use absolute path :

  ffmpeg -i input -c:v copy -c:a copy c:/output.mp4 

  or

  ffmpeg -i input -c:v copy -c:a copy "c:/output.mp4"

  It put the file in /Users/username/AppData/Local/VirtualStore

  So..it is weird and what the heck is the "VirtualStore" folder still a mystery....

  My question is simple, how to put output file in desired path location. Thanks.