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• Ubuntu 14.04 Install opencv3.0, meet relocation error

  30 mars 2015, par Coderzelf

  Here is my make log:

  [  3%] Built target libwebp
  [  3%] Built target opencv_cudev
  [  7%] Built target opencv_ts_pch_dephelp
  [  7%] Built target pch_Generate_opencv_ts
  [  7%] Built target opencv_core_pch_dephelp
  [  7%] Built target pch_Generate_opencv_core
  [ 11%] Built target opencv_core
  [ 11%] Built target opencv_imgproc_pch_dephelp
  [ 11%] Built target pch_Generate_opencv_imgproc
  [ 15%] Built target opencv_imgproc
  [ 15%] Built target opencv_imgcodecs_pch_dephelp
  [ 15%] Built target pch_Generate_opencv_imgcodecs
  [ 15%] Built target opencv_imgcodecs
  [ 15%] Built target opencv_videoio_pch_dephelp
  [ 15%] Built target pch_Generate_opencv_videoio
  Linking CXX shared library ../../lib/libopencv_videoio.so
  /usr/bin/ld: /usr/local/lib/libavformat.a(rmsipr.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
  /usr/local/lib/libavformat.a: error adding symbols: Bad value
  collect2: error: ld returned 1 exit status
  make[2]: *** [lib/libopencv_videoio.so.3.0.0] Error 1
  make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
  make: *** [all] Error 2
  

  I tried to re-build ffmpeg from source, in the beginning, make in ffmpeg meets similiar problem but after I configure using this command:

  ./configure --prefix=.. --enable-shared --enable-gpl --enable-version3 --enable-runtime-cpudetect --disable-outdev=sdl --disable-opencl --enable-libmp3lame --enable-libx264 --cc="gcc -m64 -fPIC" --extra-cflags="-I../include" --extra-ldflags="-L../lib -ldl"
  

  the ffmpeg is built.

  But the opencv make error is still there..

  Searched a lot and cannot find a solution.

• Use hadoop to fastly encode my videos

  30 mars 2015, par wanna know

  I'm developping a VOD plateform which get videos with the size > 2Gb so the conversion take too long and i want to use hadoop and ffmpeg to fastly encode my videos , is that possible? Thank you

• Gstreamer + Logitech C920 h264 video lacks timing information, plus mp4mux not working

  30 mars 2015, par user1048388

  I'm currently getting the h264 encoded video and the audio from the C920 via gstreamer 1.2.4 :

  gst-launch-1.0 v4l2src device=/dev/video0 do_timestamp=true ! video/x-h264,width=1920,height=1080,framerate=30/1 ! h264parse ! muxout. pulsesrc device="alsa_input.usb-046d_HD_Pro_Webcam_C920_5530335F-02-C920.analog-stereo" ! queue ! audioconvert ! voaacenc bitrate=65536 ! muxout. matroskamux name=muxout streamable=true ! queue ! filesink location=/home/[omitted]/test.mp4 
  

  The main problem is that the resulting video lacks timing information. By that I mean seek is not possible and the duration is unknown. Adding do_timestamp=true changes nothing. Simply copying the file in ffmpeg/libav shows several instances of:

  Non-monotonous DTS in output stream 0:0; previous: 926, current: 807; changing to 927. This may result in incorrect timestamps in the output file.

  After this short process (seconds on an hour long file), the timing information suddenly works for the entire video.

  What do I need to do to make this happen during the gst-launch pipeline?

  There are some other problems which may or may not be related: I am using matroskamux despite wanting a mp4 container because mp4mux simply does not work in the given launch command. I receive

  ERROR: Pipeline doesn't want to pause. ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Cannot identify device '/dev/video0'. Additional debug info: v4l2_calls.c(568): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: system error: No such file or directory

  when replacing matroskamux with mp4mux.

  I am clueless as to why this happens. Any help would be appreciated.

• cutting video with ffmpeg

  30 mars 2015, par Pavel K.

  i am trying to cut out 2.33 seconds slice out of a video.

  $ ffmpeg -ss 5177.13 -i /temp/1427026144.mp4 -t 2.33 -c copy -avoid_negative_ts 1 testslice.mp4
  
  ffmpeg version 2.4.git Copyright (c) 2000-2014 the FFmpeg developers
    built on Oct 20 2014 16:56:19 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
    configuration: --prefix=/home/vagrant/ffmpeg_build --extra-cflags=-I/home/vagrant/ffmpeg_build/include --extra-ldflags=-L/home/vagrant/ffmpeg_build/lib --bindir=/home/vagrant/bin --enable-gpl --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libfdk_aac --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-pthreads --enable-nonfree
    libavutil      54. 10.100 / 54. 10.100
    libavcodec     56.  8.102 / 56.  8.102
    libavformat    56.  9.101 / 56.  9.101
    libavdevice    56.  1.100 / 56.  1.100
    libavfilter     5.  1.106 /  5.  1.106
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  1.100 /  1.  1.100
    libpostproc    53.  3.100 / 53.  3.100
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/temp/1427026144.mp4':
    Metadata:
      major_brand     : isom
      minor_version   : 512
      compatible_brands: isomiso2avc1mp41
      encoder         : Lavf56.9.101
    Duration: 02:00:05.25, start: 0.000000, bitrate: 385 kb/s
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 450x360 [SAR 1:1 DAR 5:4], 256 kb/s, 12 fps, 12 tbr, 12288 tbn, 24 tbc (default)
      Metadata:
        handler_name    : VideoHandler
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
  Output #0, mp4, to 'testslice.mp4':
    Metadata:
      major_brand     : isom
      minor_version   : 512
      compatible_brands: isomiso2avc1mp41
      encoder         : Lavf56.9.101
      Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 450x360 [SAR 1:1 DAR 5:4], q=2-31, 256 kb/s, 12 fps, 12288 tbn, 12288 tbc (default)
      Metadata:
        handler_name    : VideoHandler
      Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 125 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
  Stream mapping:
    Stream #0:0 -> #0:0 (copy)
    Stream #0:1 -> #0:1 (copy)
  Press [q] to stop, [?] for help
  frame=  156 fps=0.0 q=-1.0 Lsize=     583kB time=00:00:02.34 bitrate=2031.7kbits/s    
  video:377kB audio:199kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.198143%
  

  now i try to see information about the slice

  $ ffprobe testslice.mp4 
  ffprobe version 2.4.git Copyright (c) 2007-2014 the FFmpeg developers
    built on Oct 20 2014 16:56:19 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
    configuration: --prefix=/home/vagrant/ffmpeg_build --extra-cflags=-I/home/vagrant/ffmpeg_build/include --extra-ldflags=-L/home/vagrant/ffmpeg_build/lib --bindir=/home/vagrant/bin --enable-gpl --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libfdk_aac --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-pthreads --enable-nonfree
    libavutil      54. 10.100 / 54. 10.100
    libavcodec     56.  8.102 / 56.  8.102
    libavformat    56.  9.101 / 56.  9.101
    libavdevice    56.  1.100 / 56.  1.100
    libavfilter     5.  1.106 /  5.  1.106
    libswscale      3.  1.101 /  3.  1.101
    libswresample   1.  1.100 /  1.  1.100
    libpostproc    53.  3.100 / 53.  3.100
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'testslice.mp4':
    Metadata:
      major_brand     : isom
      minor_version   : 512
      compatible_brands: isomiso2avc1mp41
      encoder         : Lavf56.9.101
    Duration: 00:00:13.00, start: 0.000000, bitrate: 367 kb/s
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 450x360 [SAR 1:1 DAR 5:4], 237 kb/s, 12 fps, 12 tbr, 12288 tbn, 24 tbc (default)
      Metadata:
        handler_name    : VideoHandler
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
  

  why is resulting slice 13 seconds long (i need 2.33 seconds)?

• Compress video with ffmpeg4android library

  30 mars 2015, par Huy Tower

  I tried to follow ffmpeg4android library, and I get the problem when compressing the video, as the Log image below.

  I use intent to transfer to Compressing Media class,

  Intent intent = new Intent(this, CompressingMedia.class);
  intent.putExtra("file_path", mLlItems.get(0).getPath());
  startActivity(intent);
  

  This is the class was transfered to :

  public class CompressingMedia extends BaseWizard {
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
  
      Intent intent = getIntent();
  
      Log.d(Prefs.TAG, "path " + intent.getExtras().getString("file_path"));
      // /storage/emulated/0/DCIM/Camera/VID_20140312_090612.mp4
  
      String command = "ffmpeg -y -i " + intent.getExtras().getString("file_path") + 
              " -strict experimental -s 320x240 -r 15 -aspect 3:4 -ab 12288 -vcodec mpeg4 -b 2097152 -sample_fmt s16 /sdcard/out.mp4";
  
      // if you want to change the default work location (/sdcard/videokit/) use the uncomment the below method.
      // It must be defined before calling the copyLicenseAndDemoFilesFromAssetsToSDIfNeeded method,
      // in order for this method to copy the assets to the correct location.
              //      setWorkingFolder("/sdcard/videokit/");
  
      // this will copy the license file and the demo video file.
      // to the videokit work folder location.
      // without the license file the library will not work.
      copyLicenseAndDemoFilesFromAssetsToSDIfNeeded();
  
      commandStr = command;
      setCommand(commandStr);
  
      runTranscoing();
      }
  }
  

  Although I received the notification Transcoding Successfully, but it looks like the capacity of file after compressing is always be 0. (the log in the bottom of images)

  I don't know the result as image below is good or not, I can not get the expected result - The video was compressed totally successfully.

  Someone know why after compressing the file is always be 0, please tell me. Thanks.

  This is the Log Cat :

  03-13 14:49:45.655: I/ActivityManager(6065): Timeline: Activity_launch_request id:app.cloudstringers time:38212359

  03-13 14:49:45.665: V/Home(6065): Global ID is 000400010007;Sell is 3

  03-13 14:49:45.770: D/ffmpeg4android(6065): path /storage/emulated/0/videokit/out.mp4

  03-13 14:49:45.770: I/ffmpeg4android(6065): workingFolderPath: /sdcard/videokit/

  03-13 14:49:45.775: D/ffmpeg4android(6065): Working directory exists, not coping assests (license file and demo videos)

  03-13 14:49:45.785: D/ffmpeg4android(6065): output directory exists.

  03-13 14:49:45.785: I/ffmpeg4android(6065): Command is set

  03-13 14:49:45.785: I/ffmpeg4android(6065): set remoteNotificationIconId: 0

  03-13 14:49:45.785: D/ffmpeg4android(6065): Client Cannot unbind - service not bound

  03-13 14:49:45.785: D/ffmpeg4android(6065): Client stopService()

  03-13 14:49:45.790: W/ContextImpl(6065): Implicit intents with startService are not safe: Intent { act=com.netcompss.ffmpeg4android.FFMpegRemoteServiceBridge } android.content.ContextWrapper.stopService:499 com.netcompss.ffmpeg4android_client.BaseWizard.stopService:451 com.netcompss.ffmpeg4android_client.BaseWizard.runTranscoing:285

  03-13 14:49:45.795: I/ffmpeg4android(6065): !!!!!!!!!!!!!!!!!!services.size(): 1

  03-13 14:49:45.795: I/ffmpeg4android(6065): putting Base categoty

  03-13 14:49:45.810: D/ffmpeg4android(6065): started: com.netcompss.ffmpeg4android.FFMpegRemoteServiceBridge

  03-13 14:49:45.810: D/ffmpeg4android(6065): Client startService()

  03-13 14:49:45.810: D/ffmpeg4android(6065): bindService() called

  03-13 14:49:45.815: W/ContextImpl(6065): Implicit intents with startService are not safe: Intent { act=com.netcompss.ffmpeg4android.FFMpegRemoteServiceBridge } android.content.ContextWrapper.bindService:517 com.netcompss.ffmpeg4android_client.BaseWizard.bindService:462 com.netcompss.ffmpeg4android_client.BaseWizard.runTranscoing:288

  03-13 14:49:45.820: D/ffmpeg4android(6065): Client bindService()

  03-13 14:49:45.935: I/ffmpeg4android(6616): =======service onCreate(): Stopping forground (to overcome 2.3.x bug)

  03-13 14:49:45.935: I/ffmpeg4android(6616): =======service onBind()=======

  03-13 14:49:45.940: I/ffmpeg4android(6616): ===onStartCommand called

  03-13 14:49:45.940: I/ffmpeg4android(6616): ===onStartCommand cat: Base

  03-13 14:49:45.940: D/ffmpeg4android(6616): onStartCommand, START_STICKY, base Command

  03-13 14:49:45.955: I/ffmpeg4android(6616): get remoteNotificationIconId: 0

  03-13 14:49:45.955: I/ffmpeg4android(6616): notifIcon is set

  03-13 14:49:45.955: I/ffmpeg4android(6616): Start RemoteService with notification id: 5326

  03-13 14:49:45.965: I/ffmpeg4android(6616): Run called.

  03-13 14:49:45.965: D/ffmpeg4android(6616): Sleeping, waiting for command

  03-13 14:49:45.970: D/ffmpeg4android(6065): Client onServiceConnected()

  03-13 14:49:45.970: I/ffmpeg4android(6065): invokeService called

  03-13 14:49:45.970: I/Videokit(6065): licenseCheck in path: /sdcard/videokit

  03-13 14:49:45.970: I/Videokit(6065): isLicExistsComplex...

  03-13 14:49:45.970: I/Videokit(6065): trying to open /sdcard/videokit/ffmpeglicense.lic

  03-13 14:49:45.970: I/Videokit(6065): license file found...

  03-13 14:49:45.970: I/Videokit(6065): time decoded: 1394535283

  03-13 14:49:45.970: I/Videokit(6065): timeStrDec 1394535283 is a valid number.

  03-13 14:49:45.970: I/Videokit(6065): time diff: 161702

  03-13 14:49:45.970: I/Videokit(6065): You used 1 of your 15 trial days.

  03-13 14:49:45.970: I/ffmpeg4android(6065): setting remote notification info

  03-13 14:49:45.970: D/ffmpeg4android(6616): command items num: 21

  03-13 14:49:45.970: D/ffmpeg4android(6616): command: ffmpeg -y -i /storage/emulated/0/videokit/out.mp4 -strict experimental -s 320x240 -r 15 -aspect 3:4 -ab 12288 -vcodec mpeg4 -b 2097152 -sample_fmt s16 /sdcard/out.mp4

  03-13 14:49:45.970: D/ffmpeg4android(6616): workingFolder from remote: /sdcard/videokit

  03-13 14:49:45.970: D/ffmpeg4android(6065): deleteing: /sdcard/videokit/vk.log isdeleted: true

  03-13 14:49:45.975: D/ffmpeg4android(6065): deleteing: /sdcard/videokit/ffmpeg4android.log isdeleted: false

  03-13 14:49:45.975: D/ffmpeg4android(6065): deleteing: /sdcard/videokit/videokit.log isdeleted: true

  03-13 14:49:45.980: D/ffmpeg4android(6065): Client invokeService()

  03-13 14:49:45.980: D/ffmpeg4android(6065): Acquire wake lock

  03-13 14:49:46.265: D/ffmpeg4android(6616): Sleeping, waiting for command

  03-13 14:49:46.295: D/ffmpeg4android(6065): TranscodeBackground doInBackground started

  03-13 14:49:46.295: I/ffmpeg4android(6616): =======remote service runTranscoding ======

  03-13 14:49:46.340: V/HomeAsync(6065): TOTAL_SPACE is 1;AVAILABLE_SPACE is 0.451

  03-13 14:49:46.345: I/ActivityManager(6065): Timeline: Activity_idle id: android.os.BinderProxy@423deed8 time:38213045

  03-13 14:49:46.345: I/ActivityManager(6065): Timeline: Activity_idle id: android.os.BinderProxy@420323a0 time:38213045

  03-13 14:49:46.565: D/dalvikvm(6616): Trying to load lib /data/app-lib/app.cloudstringers-2/libvideokit.so 0x41b285f0

  03-13 14:49:46.570: D/dalvikvm(6616): Added shared lib /data/app-lib/app.cloudstringers-2/libvideokit.so 0x41b285f0

  03-13 14:49:46.570: I/Videokit(6616): Loading native library compiled at 21:59:53 Oct 23 2013

  03-13 14:49:46.575: I/ffmpeg4android(6616): ===============Running command from thread path: /sdcard/videokit

  03-13 14:49:46.575: I/Videokit(6616): vk ffmpeg sdcardPath: /sdcard/videokit

  03-13 14:49:46.575: I/Videokit(6616): licenseCheck in path: /sdcard/videokit

  03-13 14:49:46.575: I/Videokit(6616): isLicExistsComplex...

  03-13 14:49:46.575: I/Videokit(6616): trying to open /sdcard/videokit/ffmpeglicense.lic

  03-13 14:49:46.575: I/Videokit(6616): license file found...

  03-13 14:49:46.575: I/ffmpeg4android(6616): =======ProgressBackgroundRemote doInBackground=========

  03-13 14:49:46.575: I/Videokit(6616): time decoded: 1394535283

  03-13 14:49:46.575: I/Videokit(6616): timeStrDec 1394535283 is a valid number.

  03-13 14:49:46.575: I/Videokit(6616): time diff: 161703

  03-13 14:49:46.575: I/Videokit(6616): You used 1 of your 15 trial days.

  03-13 14:49:46.575: D/Videokit(6616): license check rc: 0

  03-13 14:49:46.575: D/Videokit(6616): run() called verion 2.0

  03-13 14:49:46.575: D/Videokit(6616): run passing off to main()

  03-13 14:49:46.800: D/ffmpeg4android(6065): onServiceDisconnected

  03-13 14:49:48.640: I/ffmpeg4android(6065): Got real duration: 00:00:07.78

  03-13 14:49:48.640: I/ffmpeg4android(6065): ==== getting currentVkLogSize from VK

  03-13 14:49:48.640: D/ffmpeg4android(6065): currentVkLogSize: 5751

  03-13 14:49:48.645: I/ffmpeg4android(6065): No ffmpeg4android_log file, using vk log

  03-13 14:49:48.645: I/line(6065): _rate, rate, width or height

  03-13 14:49:48.650: I/line(6065): Statistics: 0 seeks, 0 writeouts

  03-13 14:49:48.650: I/line(6065): Statistics: 72873 bytes read, 2 seeks

  03-13 14:49:48.650: D/ffmpeg4android(6065): currentTimeStr: exit

  03-13 14:49:48.650: D/ffmpeg4android(6065): ============Found one of the exit tokens in the log============

  03-13 14:49:48.650: I/ffmpeg4android(6065): onProgressUpdate: 100

  03-13 14:49:48.650: D/ffmpeg4android(6065): Releasing wake lock

  03-13 14:49:48.650: D/ffmpeg4android(6065): TranscodeBackground onPostExecute

  03-13 14:49:48.700: D/ffmpeg4android(6065): /sdcard/videokit/null length in bytes: 0

  03-13 14:49:48.700: D/ffmpeg4android(6065): showNotifications

  03-13 14:49:48.700: W/ffmpeg4android(6065): output file is not set use the setOutputFilePath method to set the full output file path

  03-13 14:49:48.705: I/ffmpeg4android(6065): FFMPEG finished.

  03-13 14:49:48.710: D/ffmpeg4android(6065): releaseService()

  03-13 14:49:48.710: D/ffmpeg4android(6065): Client stopService()

  03-13 14:49:48.710: W/ContextImpl(6065): Implicit intents with startService are not safe: Intent { act=com.netcompss.ffmpeg4android.FFMpegRemoteServiceBridge } android.content.ContextWrapper.stopService:499 com.netcompss.ffmpeg4android_client.BaseWizard.stopService:451 com.netcompss.ffmpeg4android_client.BaseWizard.handleServiceFinished:513