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• Does Android 4.x support streaming RTSP over TCP ?

  9 décembre 2014, par Robert

  I’ve used VideoView in Android to play video on wowza successfully. Now I got to deal with my server which the UDP ports seems to be blocked. With the proof of openRTSP command :

  -> % openRTSP rtsp://61.218.52.250:554/live/ch00_0
  
  
  
  Opening connection to 61.218.52.250, port 554...
  
  ...remote connection opened
  
  Sending request: OPTIONS rtsp://61.218.52.250:554/live/ch00_0 RTSP/1.0
  
  CSeq: 2
  
  User-Agent: openRTSP (LIVE555 Streaming Media v2013.12.16)
  
  
  
  
  
  Received 105 new bytes of response data.
  
  Received a complete OPTIONS response:
  
  RTSP/1.0 200 OK
  
  CSeq: 2
  
  Server: UBNT Streaming Server v1.2
  
  Public: DESCRIBE, SETUP, TEARDOWN, PLAY
  
  
  
  
  
  Sending request: DESCRIBE rtsp://61.218.52.250:554/live/ch00_0 RTSP/1.0
  
  CSeq: 3
  
  User-Agent: openRTSP (LIVE555 Streaming Media v2013.12.16)
  
  Accept: application/sdp
  
  
  
  
  
  Received 562 new bytes of response data.
  
  Received a complete DESCRIBE response:
  
  RTSP/1.0 200 OK
  
  CSeq: 3
  
  Server: UBNT Streaming Server v1.2
  
  Content-Base: rtsp://61.218.52.250:554/live/ch00_0/
  
  Content-Type: application/sdp
  
  Content-Length: 393
  
  
  
  v=0
  
  o=- 1 1 IN IP4 127.0.0.1
  
  s=Ubiquiti Live
  
  i=UBNT Streaming Media
  
  c=IN IP4 0.0.0.0
  
  t=0 0
  
  m=video 0 RTP/AVP 99
  
  b=AS:50000
  
  a=framerate:25
  
  a=x-dimensions:1280,720
  
  a=x-vendor-id:ubnt,a521
  
  a=x-rtp-ts:4617405454576779984
  
  a=rtpmap:99 H264/90000
  
  a=fmtp:99 profile-level-id=42A01E;packetization-mode=1;sprop-parameter-sets=Z0IAKOkAoAt1xIAG3dAAzf5gDYgQlA==,aM4xUg==
  
  a=control:trackID=0
  
  
  
  Opened URL "rtsp://61.218.52.250:554/live/ch00_0", returning a SDP description:
  
  v=0
  
  o=- 1 1 IN IP4 127.0.0.1
  
  s=Ubiquiti Live
  
  i=UBNT Streaming Media
  
  c=IN IP4 0.0.0.0
  
  t=0 0
  
  m=video 0 RTP/AVP 99
  
  b=AS:50000
  
  a=framerate:25
  
  a=x-dimensions:1280,720
  
  a=x-vendor-id:ubnt,a521
  
  a=x-rtp-ts:4617405454576779984
  
  a=rtpmap:99 H264/90000
  
  a=fmtp:99 profile-level-id=42A01E;packetization-mode=1;sprop-parameter-sets=Z0IAKOkAoAt1xIAG3dAAzf5gDYgQlA==,aM4xUg==
  
  a=control:trackID=0
  
  
  
  Created receiver for "video/H264" subsession (client ports 63346-63347)
  
  Sending request: SETUP rtsp://61.218.52.250:554/live/ch00_0/trackID=0 RTSP/1.0
  
  CSeq: 4
  
  User-Agent: openRTSP (LIVE555 Streaming Media v2013.12.16)
  
  Transport: RTP/AVP;unicast;client_port=63346-63347
  
  
  
  
  
  Received 47 new bytes of response data.
  
  Received a complete SETUP response:
  
  RTSP/1.0 461 Unsupported Transport
  
  CSeq: 4
  
  
  
  
  
  Failed to setup "video/H264" subsession: 461 Unsupported Transport

  After searching around I found it seems Android still not support RTSP over TCP :

  When streaming to an Android device using RTSP/RTP, the RTP portion
  must flow over UDP. Android doesn’t support RTSP/RTP interleaved (RTP
  over TCP). This means that if UDP is unavailable for RTP playback, RTP
  over TCP won’t work as a failover and your stream won’t play.

  Considering it’s posted on 2010, does Android 4.x support RTSP over TCP now ? I’ve found lots of post asking for how to force transfer via TCP other than UDP. I guess it’s not.

  If not, could I achieve it by re-compiling and using ffmpeg library ?

  Basically I hope ffmpeg could help me to automatically switch to TCP while UDP not available.

• Senior Software Engineer for Enterprise Analytics Platform

  28 janvier 2016, par Matthieu Aubry — Uncategorized

  We’re looking for a lead developer to work on Piwik Enterprise Analytics core platform software. We have some exciting challenges to solve and need you !

  You’ll be working with both fellow employees and our open-source community. Piwik staff lives in New Zealand, Europe (Poland, Germany) and in the U.S. We do the vast majority of our collaboration online.

  We are a small, flexible team, so when you come aboard, you will play an integral part in engineering. As a leader you’ll help us to prioritise work and grow our community. You’ll help to create a welcoming environment for new contributors and set an example with your development practices and communications skills. You will be working closely with our CTO to build a future for Piwik.

  Key Responsibilities

  • Strong competency coding in PHP and JavaScript.
  • Scaling existing backend system to handle ever increasing amounts of traffic and new product requirements.
  • Outstanding communication and collaboration skills.
  • Drive development and documentation of internal and external APIs (Piwik is an open platform).
  • Help make our development practices better and reduce friction from idea to deployment.
  • Mentor junior engineers and set the stage for personal growth.

  Minimum qualifications

  • 5+ years of experience in product development, security, usable interface design.
  • 5+ years experience building successful production software systems.
  • Strong competency in PHP5 and JavaScript application development.
  • Skill at writing tests and reviewing code.
  • Strong analytical skills.

  Location

  • Remote work position !
  • or you can join us in our office based in Wellington, New Zealand or in Wrocław, Poland.

  Benefits

  • Competitive salary.
  • Remote work is possible.
  • Yearly meetup with the whole team abroad.
  • Be part of a successful open source company and community.
  • In our Wellington (NZ) and Wroclaw (PL) offices : snacks, coffee, nap room, Table football, Ping pong…
  • Regular events.
  • Great team of people.
  • Exciting projects.

  Learn more

  Learn more what it’s like to work on Piwik in our blog post

  About Piwik

  At Piwik we develop the leading open source web analytics platform, used by more than one million websites worldwide. Our vision is to help the world liberate their analytics data by building the best open alternative to Google Analytics.

  The Piwik platform collects, stores and processes a lot of information : hundreds of millions of data points each month. We create intuitive, simple and beautiful reports that delight our users.

  Apply online

  To apply for this position, please Apply online here. We look forward to receiving your applications !

• How to get Updated Shared Object Files of OpenCV and FFMPEG libraries to overcome Libpng vulnerability ? [duplicate]

  3 mars 2017, par Liya

  This question already has an answer here :

  • Libpng vulnerability
    
    2 answers
    

  We seek a technical help on a current issue which we are facing with one of our android application.

  Our application is for live video streaming and recording (both audio and video) using wifi camera . We have completed the development process and every functionality of the application is working as expected in current version. but once we tried to upload the application to Google has rejected the application stating that vulnerability issue with Libpng library version.

  Our application uses OpenCV, FFMPEG, JavaCV and JavaCPP libraries for Image processing for Video generation. But when we tried to upload to play store google have rejected application with following message :

  “ Hello Google Play Developer,

  We rejected Application name, for violating our Malicious Behavior or
  User Data policy. If you submitted an update, the previous version of
  your app is still available on Google Play.

  This app uses software that contains security vulnerabilities for
  users or allows the collection of user data without proper disclosure.

  Below is the list of issues and the corresponding APK versions that
  were detected in your recent submission. Please upgrade your app(s) as
  soon as possible and increment the version number of the upgraded APK.

  Vulnerability APK Version(s) Libpng library

  The vulnerabilities were fixed in libpng v1.0.66, v.1.2.56, v.1.4.19,
  v1.5.26 or higher. You can find more information about how resolve the
  issue in this Google Help Center article.”

  Since we have not used libpng library directly in our application we assume the problem is with opencv lib version which may be using libpng , so we replaced the opencv jar file with its gradle dependency and .so files of different libraries are combined in an armeabi.jar file and once we deleted the .so files from libs/armeabi.jar folder and uploaded to play store, then Google didn’t rejected with vulnerability issue and it got uploaded to the play store but the recording isn’t working in that version because we have removed the .SO files from the Project.

  So as per our assumptions the libpng vulnerability is not only due to opencv but also due to the other libraries or the .so files .So please kindly suggest us which all .SO files we can remove from the library , so our application functionality for video recording works properly .

  We tried to update the OpenCV, FFMPEG libraries and since the SO files are not getting regenerated so could not resolve this issue yet

  We already refer following links to find a solution :

  1. libpng-vulnerability

  2. opencv-in-android

  3. FFmpegAndroid

  For more information please read our stackover flow post regarding this issue :Libpng vulnerability

  We need help to solve this issue. Please let us know if you can help us to solve this issue since we are running out of time.

  PS : These are the assumptions we made on this issue, May be we are wrong , so please guide us to the right path so we can achieve our goal.