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• Java IO Streaming Large Files Video/Data/Sound [on hold]

  2 mars 2015, par James Relic

  I have a series of questions listed below regarding java.io streaming and sockets.

  1. What is a video streaming server ? How does it differ from a standard web server.

  2. Remember Napster/Morpheus etc ? They’re P2P programs, did they allow users to stream data to each other ? Is there a difference between streaming and downloading (on the clients end) ?

  3. How would you go about writing a generic program in java that streams anything to the client , word docs, mp3 files, videos files ? Would you use serverlets for this purpose ?

  4. If all you are doing is sending files video/sound/docs/text etc from one computer to another would you need to use specialist APIs like FFMPEG-Java, Red5 ?

  5. if you are sending video or sound as a file supposedly you don’t need to worry about encoding or decoding ?

  6. Do I need to worry about RTSP if im streaming videos as a file ? Rather then wanting them to play live on the client end ?

  I understand my questions sound very untechnical and basic, but I’m a little confused on this whole streaming topic and want to know the best way to stream large files of all types using the Java EE/Spring platform.

• Using FFmpeg with Nvidia GPU acceleration

  27 janvier 2021, par derekc23

  I’m using Using FFmpeg with NVIDIA GPU Hardware Acceleration : : NVIDIA Video Codec SDK Documentation for Windows 10

  


  All goes well until I hit the last three commands :

  


  • Goto nv-codec-headers directory and install ffnvcodec

  


  make install PREFIX=/usr

  


  • Go to the FFmpeg installation folder and run the following command.

  


  ./configure —enable-nonfree –disable-shared —enable-cuda-sdk —enable-libnpp –-toolchain=msvc —extra-cflags=-I../nv_sdk —extra-ldflags=-libpath :../nv_sdk

  


  • Compile the code by executing the following command.

  


  make -j 8

  


  I cannot get the ‘make’ command to work – I get 'make' is not recognized as an internal or external command,
operable program or batch file.
I did try the next command, the ./configure one, this was also rejected.

  


  The documentation is : https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/

  


  Can anyone please help with this ?

  


• RFC 4175 support in ffmpeg ?

  28 novembre 2018, par Morix Dev

  As of today, is RFC 4175 (aka SMPTE 2110-20) currently supported in the released version of ffmpeg (4.1) ?

  Surfing the web I am only able to find these two references :

  • https://patchwork.ffmpeg.org/patch/2701/
  • https://tech.ebu.ch/docs/events/opensource17/presentations/SMPTE2110-ffmpeg.pdf

  But it is not clear to me if it has been merged into the released version or not...

  If so, are there some examples of ffmpeg / ffplay command lines for testing that ?