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• ffmpeg m3u8 proper encoding

  12 mars 2019, par K.Joe

  So i recently started using ffmpeg to download live streaming videos but the problem i am facing is that , the downloaded video stucks a lot especially for lengthy videos like 2 hours.

  The command which i currently use to download streaming files :-

  ffmpeg -i "https://link.m3u8" -c copy output.mkv

  This command worked perfectly for 35 min lengthy video [without any stucking problem] but failed for 2 hours lengthy video

  Also it showed "Invalid length" error when i tried to encode that 2 hour lenghty video using x264 lib command :-

  ffmpeg -i output.mkv -c:v libx264 -preset slow -crf 22 -c:a -c:v copy ReOutput.mkv

  [matroska,webm @ 00000000003d0940] Invalid length 0x29e39 > 0x1b55200a in parent

  so is there any way to fix this problem through encoding ?

• How do I actually use ffmpeg on Android ?

  19 décembre 2013, par slhck

  I have a very basic question regarding Android and ffmpeg. I obtained ffmpeg from http://bambuser.com/opensource and was able to compile it for ARM.

  The results are the binaries (ffmpeg) as well as several libsomething.so files.

  My question is : Is this enough to decode videos ? How do I actually use ffmpeg then ?

  To load the library I have :

  static {
  
      System.load("/data/data/com.package/lib/libavcodec.so");
  
   }

  It loads fine. But what then ?

  
  _{More explanation : I saw other projects where people had their ffmpeg source in a JNI directory in the project. They also created some Android.mk files and some C code along with it. Would I need this as well ? Why would I create the .so files first and then copy the ffmpeg source code again ?}
  

  
  _{I know the NDK and how it should work but I've never seen an example of how one would actually call ffmpeg functions using it, because people seem to be hiding their implementations (which is sort of understandable) but not even giving useful pointers or examples.}
  

  
  _{Let's just say I wanted to decode a video file. Which kind of native methods would I need to implement ? How do I run the project ? Which data types need to be passed ? etc. There are certainly a few people here who have at least done that, I know this from searching for hours and hours.}
  

• How do I actually use ffmpeg on Android ?

  14 mars 2021, par slhck

  I have a very basic question regarding Android and ffmpeg. I obtained ffmpeg from http://bambuser.com/opensource and was able to compile it for ARM.

  



  The results are the binaries (ffmpeg) as well as several libsomething.so files.

  



  My question is : Is this enough to decode videos ? How do I actually use ffmpeg then ?

  



  To load the library I have :

  



  static {
    System.load("/data/data/com.package/lib/libavcodec.so");
 }


  



  It loads fine. But what then ?

  



  _{
More explanation : I saw other projects where people had their ffmpeg source in a JNI directory in the project. They also created some Android.mk files and some C code along with it. Would I need this as well ? Why would I create the .so files first and then copy the ffmpeg source code again ?
}

  



  _{
I know the NDK and how it should work but I've never seen an example of how one would actually call ffmpeg functions using it, because people seem to be hiding their implementations (which is sort of understandable) but not even giving useful pointers or examples.
}

  



  _{
Let's just say I wanted to decode a video file. Which kind of native methods would I need to implement ? How do I run the project ? Which data types need to be passed ? etc. There are certainly a few people here who have at least done that, I know this from searching for hours and hours.
}