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• How to convert (re-wrap) Transport Stream to MPEG-4 container in iOS app ?

  27 janvier 2015, par Aleksandr Suvorov

  I have a live stream in .ts format, containing AAC audio and H.264 video. I want to play it on iOS devices. I tried to use a movie player based on FFmpeg to decode and play video, but the audio was lagging.

  Can I rewrap this Transport Stream to an MPEG-4 container to play on iOS devices – without converting it server-side ?

  The server returns me a URL of the .ts live stream and my goal is to play this stream on iOS devices without an .m3u8 playlist because I can’t get it from the server.

• Grep ffmpeg time/duration to get progress stream ?

  2 février 2014, par paulkon

  Is there a way to grep ffmpeg's unfriendly output to get the progress (time/duration) into a variable ? I've tried this on powershell already but i can't get seem to get a hold of ffmpeg's continuous output via pipe redirection and using the --line-buffered flag in grep.

  Here is what I came up with but it only returns after the encoding process has finished.

  ffmpeg -i $input $output 2>&1 | grep --line-buffered -oP "(?<=time=)[0-9:]*"

• FFMPEG read audio convenience function

  7 mars 2016, par Phlox Midas

  In Matlab, there’s a function called audioread that takes a file name as input and returns a vector of samples and the sample rate like this :

  [samples, sampleRate] = audioread(fileName);

  I’ve been programming FFMPEG but finding it very low level. I have a file being read using a technique similiar to this. Is there any such equivalent C function in FFMPEG as there is in Matlab so I don’t have to fiddle with the low level stuff ? Or any library that can provide a nice API like this for FFMPEG (though I would just prefer this one function) ?