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  • How can I reset the path of FFMPEG in Java ?

    4 avril 2017, par Figgyja

    I accidentally set the path for FFMPEG to a different folder, and I can’t change it back.

    I’m using Processing (the API and its IDE) and the user created Video Export library to capture and write an mp4 video file. The library required FFMPEG, so I downloaded and installed it. After I installed it, I ran the code, and the library called Java to request the path of FFMPEG. I wrongly set the path to a different folder, which I eventually deleted. I knew I set it to the wrong folder, and ran the code again to see if I could trigger the Java prompt again to reset the folder.

    The console response I received was : (I’m sure most of it doesn’t have to do with the actual issue. However, I wanted to show all of it in case it somehow does.)

    Oct 24, 2016 10:23:25 PM java.util.prefs.WindowsPreferences
    WARNING : Could not open/create prefs root node Software\JavaSoft\Prefs
    at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
    java.io.IOException : Cannot run program
    "C :...\Processing\Octree_Graphics\data\FFMPEG\ff-prompt.bat" :
    CreateProcess error=2, The system cannot find the file specified at
    java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at
    com.hamoid.VideoExport.startFfmpeg(Unknown Source) at
    com.hamoid.VideoExport.initialize(Unknown Source) at
    com.hamoid.VideoExport.saveFrame(Unknown Source) at
    Octree_Graphics.draw(Octree_Graphics.java:90) at
    processing.core.PApplet.handleDraw(PApplet.java:2399) at
    processing.opengl.PSurfaceJOGL$DrawListener.display(PSurfaceJOGL.java:731)
    at
    jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:692)
    at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:674)
    at
    jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:443)
    at
    jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:1293)
    at
    jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1147)
    at com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:759) at
    com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:81)
    at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:452)
    at
    com.jogamp.opengl.util.FPSAnimator$MainTask.run(FPSAnimator.java:178)
    at java.util.TimerThread.mainLoop(Timer.java:555) at
    java.util.TimerThread.run(Timer.java:505) Caused by :
    java.io.IOException : CreateProcess error=2, The system cannot find the
    file specified at java.lang.ProcessImpl.create(Native Method) at
    java.lang.ProcessImpl.(ProcessImpl.java:386) at
    java.lang.ProcessImpl.start(ProcessImpl.java:137) at
    java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) ... 17 more
    VideoExport error : Ffmpeg failed. Study
    C :...\Processing\Octree_Graphics\basic.mp4.txt for more details.

    I need to find a way to reset the path of FFMPEG that Java has. I have tried uninstalling and reinstalling the library, but I haven’t tried Java (I don’t want to mess with anything it has in its current state).

    P.S. The file listed at the end of the console response (basic.mp4.txt) was empty because it had not begun writing to the file yet.

  • ffmpeg : Could not negotiate a supported cipher suite

    9 novembre 2016, par bot1131357

    I am trying to securely rtsp stream between two consoles on my computer.

    On the listening console I have :

    ffplay -rtsp_flags listen rtsps://127.0.0.1:8554/live.sdp?cert=domain.crt"&"key=domain.key

    On the streaming console I have :

    ffmpeg -f lavfi -i smptebars -c:v libvpx -f rtsp -rtsp_transport tcp rtsps://127.0.0.1:8554/live.sdp

    When I run ffmpeg on the second console, ffplay (1st console) returns with the following message :

    [tls @ 0x7f3eb8005be0] error:1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher
    
[rtsp @ 0x7f3eb80008c0] Unable to open RTSP for listening
    
rtsps://127.0.0.1:8554/live.sdp?cert=domain.crt&key=domain.key: Input/output error

    The second console shows this :

    Input #0, lavfi, from 'smptebars':
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
    
[libvpx @ 0x120f8c0] v1.6.0-322-gc325fb7
    
[tls @ 0x12340e0] Unable to negotiate TLS/SSL session
    
Could not write header for output file #0 (incorrect codec parameters ?): Input/output errorStream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> vp8 (libvpx))
    
    Last message repeated 1 times

    I get the feeling that the command syntax that I use is incorrect, but I was unable to find much resources on this on the internet.
    Can someone point me in the right direction ?

    My build (Ubuntu 14.04 LTS)

    ffmpeg version N-82143-gbf14393 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
    
  configuration: --prefix=/home/reccsi/Dev/build-x64/ffmpeg-x64/ --target-os=linux --pkg-config-flags=--static --enable-shared --enable-libvpx --enable-libvorbis --enable-openssl --enable-pic --enable-debug

  • concatenate encrypted m3u8 ts video segments into a whole

    20 octobre 2016, par iMath

    The m3u8 content

    #EXTM3U
    
#EXT-X-VERSION:3
    
#EXT-X-ALLOW-CACHE:YES
    
#EXT-X-TARGETDURATION:5
    
#EXT-X-MEDIA-SEQUENCE:0
    
#EXT-X-KEY:METHOD=AES-128,URI="http://www.gaiamount.com/keys/3958/4k",IV=0x440796ac5ac10cc577f9bec05cd042ef
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0000.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0001.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0002.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0003.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0004.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0005.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0006.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0007.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0008.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0009.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0010.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0011.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0012.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0013.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0014.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0015.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0016.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0017.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0018.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0019.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0020.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0021.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0022.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0023.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0024.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0025.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0026.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0027.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0028.ts
    
#EXTINF:5.000000,
    
/seg/u116/v810_mp4_0029.ts
    
#EXTINF:4.760000,
    
/seg/u116/v810_mp4_0030.ts
    
#EXT-X-ENDLIST

    I’ve already download all the ts video segments using another Downloader , then try to follow the method to concatenate these ts video segments into a whole , however the ffmpeg complains the following

    C:\Users\i>ffmpeg -f concat -i mylist.txt -c copy output.ts
    
ffmpeg version N-81475-gdc7e5ad Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dx
    
va2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
    
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena
    
ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
    
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab
    
le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
    
openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschr
    
oedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheor
    
a --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo
    
rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --ena
    
ble-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --e
    
nable-decklink --enable-zlib
    
  libavutil      55. 29.100 / 55. 29.100
    
  libavcodec     57. 54.100 / 57. 54.100
    
  libavformat    57. 48.100 / 57. 48.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 57.100 /  6. 57.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
[concat @ 03e30fe0] Impossible to open 'C:/Users/i/AppData/Roaming/iMath/01.ts'
    
mylist.txt: Invalid data found when processing input
    

    
C:\Users\i>

    so (1)what should I do to concatenate these encrypted m3u8 ts video segments into a whole ?
    (2) Any way to get the video byte size an m3u8 url referenced to ?

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