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• How to run ffmpeg from command line in android

  9 March 2013, by user1662334

  I want to use ffmpeg using command line.I have saved ffmpeg.so in files directory in the project.But i am getting exception while doing so.This is the code:

  public class MainActivity extends Activity {
  
  
  
      Process p;
  
  
  
      @Override
  
      public void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
  
  
          Process p = Runtime.getRuntime().exec("/data/data/com.example.ffmpegnew/files/ffmpeg",null, new File("/data/data/com.example.ffmpegnew/files"));
  
  
  
          }
  
          catch(Exception e)
  
          {
  
              System.out.println("exception"+e);
  
          }
  
  
  
      }
  
  
  
  }

  This is the exception:

  09-16 16:21:24.992: I/System.out(2103): exceptionjava.io.IOException: Error running exec(). Commands: [/data/data/com.example.ffmpegnew/files/ffmpeg] Working Directory: /data/data/com.example.ffmpegnew/files Environment: null

  Please tell me what kind of mistake i am doing.Thanks.

• http: fix potentially dangerous whitespace skipping code

  8 March 2018, by wm4

  http: fix potentially dangerous whitespace skipping code
  If the string consists entirely of whitespace, this could in theory
  
  continue to write '\0' before the start of the memory allocation. In
  
  practice, it didn't really happen: the generic HTTP header parsing code
  
  already skips leading whitespaces, so the string is either empty, or
  
  consists a non-whitespace. (The generic code and the cookie code
  
  actually have different ideas about what bytes are whitespace: the
  
  former uses av_isspace(), the latter uses WHITESPACES. Fortunately,
  
  av_isspace() is a super set of the http.c specific WHITESPACES, so
  
  there's probably no case where the above assumption could have been
  
  broken.)
  

  • [DH] libavformat/http.c

• FFMPEG re-broadcast/proxy MJPEG stream

  10 September 2022, by Ollie Pugh

  I have an MJPEG stream coming from an RPI on my home network and have an NGINX acting as a proxy on an EC2.

  


  For the camera access the flow of stream to the user is the following

  


  RPi -> mjpeg-proxy (running on EC2) -> NGINX (running on same EC2) -> user

  


  the point of mjpeg-proxy is to reduce the load on the RPi and only have one stream to the Pi and allow the EC2 to distribute that one stream.

  


  Now this work fine-ish from my PC (on same network as Pi) the streams work perfectly. But when it comes to my phone on roaming data, the stream is super choppy and the latency grows massively (this project needs minimal latency, like sub 300ms).

  


  I can't understand why this would happen? Because even when running of my local PC its going through the Proxy hosted in the cloud, so its not as if its an advantage to it being local?

  


  the stream is fine on another device, e.g. my laptop, but thats on the same network as the RPi. But like I said, it shouldn't makea difference as its going through a proxy!

  


  I was wondering if using FFMPEG to re-stream the mjpeg stream would be beneficial as node is notoriously slow. But I don't really want to be writing my own mjpeg-proxy in C++ to speed this all up.

  


  I have looked online for answers to FFMPEG MJPEG proxy and have been very unsuccesful