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• JavaCV/FFmpeg causes crash only on Lollipop

  13 novembre 2015, par WeirdHat

  I get reports of this crash from users of my app on Galaxy Note devices running Android Lollipop (might happen on other devices but the majority of my users have Galaxy Note because it’s a drawing app). Below is the relevant code from my ASyncTask which exports a series of images (plus audio) to a video file using JavaCV/FFmpeg, and the stack trace from the reported crash. It works fine on my Note 8.0 running KitKat (there’s no Lollipop update available for that device), and works fine in Lollipop on the emulator, so I’m having a hard time tracking down the cause and don’t know what to do.

  @Override
  
  protected String doInBackground(final File... params) {
  
      FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(params[0],canvas_width,canvas_height, 0);
  
      FrameGrabber audiograbber = null;
  
      if(audio!=null) audiograbber = new FFmpegFrameGrabber(audio);
  
      Frame audioframe;
  
      Frame image;
  
      AndroidFrameConverter converter = new AndroidFrameConverter();
  
  
  
      try {
  
          recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
  
          recorder.setFrameRate(framerate);
  
          recorder.setPixelFormat(0);
  
          if(audio!=null) {
  
              audiograbber.setFrameRate(framerate);
  
              audiograbber.start();
  
              recorder.setAudioChannels(audiograbber.getAudioChannels());
  
              recorder.setSampleRate(audiograbber.getSampleRate());
  
          }
  
          recorder.start();
  
  
  
          Bitmap drawframe = createBitmap(canvas_width, canvas_height, Bitmap.Config.ARGB_8888);
  
          Canvas c = new Canvas(drawframe);
  
          Paint p = new Paint();
  
  
  
          for(int frame=0; frame/code to draw image
  
  
  
              image = converter.convert(drawframe);
  
              recorder.record(image);
  
          }
  
  
  
          if(isCancelled()) {
  
              bgbitmap.recycle();
  
              drawframe.recycle();
  
              return "Cancelled";
  
          }
  
  
  
          if(audio!=null) {
  
              while((audioframe = audiograbber.grabFrame()) != null) {
  
                  recorder.record(audioframe);
  
              }
  
          }
  
  
  
          recorder.stop();
  
          bgbitmap.recycle();
  
          drawframe.recycle();
  
          if(audio!=null) audiograbber.stop();
  
          return "Saved "+params[0];
  
      } catch (Exception e) {
  
          e.printStackTrace();
  
      }
  
      return "Failed";
  
  }

  -

  *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
  
  Build fingerprint: 'samsung/treltexx/trelte:5.1.1/LMY47X/N910CXXU1COH4:user/release-keys'
  
  Revision: '21'
  
  ABI: 'arm'
  
  pid: 12039, tid: 12053, name: GCDaemon  >>> com.weirdhat.roughanimator <<<
  
  signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
  
  Abort message: 'sart/runtime/gc/collector/mark_sweep.cc:381] Can't mark invalid object'
  
      r0 00000000  r1 00002f15  r2 00000006  r3 00000000
  
      r4 b366bdb8  r5 00000006  r6 00000002  r7 0000010c
  
      r8 00000001  r9 b446f550  sl b4429000  fp 9a975c60
  
      ip 00002f15  sp b366b008  lr b6db9cb9  pc b6ddd3ac  cpsr 60070010
  
  
  
  backtrace:
  
      #00 pc 0003b3ac  /system/lib/libc.so (tgkill+12)
  
      #01 pc 00017cb5  /system/lib/libc.so (pthread_kill+52)
  
      #02 pc 000188c7  /system/lib/libc.so (raise+10)
  
      #03 pc 00015165  /system/lib/libc.so (__libc_android_abort+36)
  
      #04 pc 00012fac  /system/lib/libc.so (abort+4)
  
      #05 pc 00242f17  /system/lib/libart.so (art::Runtime::Abort()+170)
  
      #06 pc 000ad991  /system/lib/libart.so (art::LogMessage::~LogMessage()+1360)
  
      #07 pc 0013ec53  /system/lib/libart.so (bool art::gc::accounting::HeapBitmap::AtomicTestAndSet(art::mirror::Object const*, art::gc::collector::MarkSweepMarkObjectSlowPath const&)+422)
  
      #08 pc 0013ed27  /system/lib/libart.so (art::gc::collector::MarkSweep::MarkObjectParallel(art::mirror::Object const*)+142)
  
      #09 pc 0013ff23  /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootParallelCallback(art::mirror::Object**, void*, art::RootInfo const&)+26)
  
      #10 pc 0025893d  /system/lib/libart.so (art::ReferenceMapVisitor::VisitQuickFrame()+1024)
  
      #11 pc 00258cad  /system/lib/libart.so (art::ReferenceMapVisitor::VisitFrame()+224)
  
      #12 pc 0024c8e9  /system/lib/libart.so (art::StackVisitor::WalkStack(bool)+276)
  
      #13 pc 0024e617  /system/lib/libart.so (art::Thread::VisitRoots(void (*)(art::mirror::Object**, void*, art::RootInfo const&), void*)+994)
  
      #14 pc 0013ef9f  /system/lib/libart.so (art::gc::collector::CheckpointMarkThreadRoots::Run(art::Thread*)+126)
  
      #15 pc 0025b44d  /system/lib/libart.so (art::ThreadList::RunCheckpoint(art::Closure*)+296)
  
      #16 pc 0013dc0d  /system/lib/libart.so (art::gc::collector::MarkSweep::MarkRootsCheckpoint(art::Thread*, bool)+96)
  
      #17 pc 0014165d  /system/lib/libart.so (art::gc::collector::MarkSweep::PreCleanCards()+172)
  
      #18 pc 001417d3  /system/lib/libart.so (art::gc::collector::MarkSweep::MarkingPhase()+126)
  
      #19 pc 001418b9  /system/lib/libart.so (art::gc::collector::MarkSweep::RunPhases()+176)
  
      #20 pc 00138527  /system/lib/libart.so (art::gc::collector::GarbageCollector::Run(art::gc::GcCause, bool)+246)
  
      #21 pc 0015865b  /system/lib/libart.so (art::gc::Heap::CollectGarbageInternal(art::gc::collector::GcType, art::gc::GcCause, bool)+1426)
  
      #22 pc 00159af5  /system/lib/libart.so (art::gc::Heap::ConcurrentGC(art::Thread*)+56)
  
      #23 pc 000003ef  /system/framework/arm/boot.oat

• avconv : Saving MP4 is Taking Hours

  4 septembre 2015, par PeregrineStudios

  not entirely sure if I should post this on askubuntu or stackoverflow. Posted on askubuntu and not getting any answers. I’m hoping I can find an answer here.

  I’m setting up a website where users can upload videos and share them. I’m using avconv to reduce the video size and save it twice, once as an mp4 and again as a webm.

  Uploading a .MOV from a phone, the video conversion is quick and manageable.

  Uploading a .mp4 from a Samsung Galaxy S3, the video conversion to webm is also quick. But, the conversion to another mp4 takes FOREVER - literally hours. Why ? Is anyone able to shed light on the problem ?

  My avconv output is below.

  avconv -i /var/www/dev_jackpine/ottawa2017/temp_videos/37a949071acaee714dae829ca8df9b29.mp4 -c:v libx264 -vf transpose=1,transpose=1,transpose=1 -s 640x480 /var/www/dev_jackpine/ottawa2017/spinnies/test.mp4
  
  avconv version 0.8.17-4:0.8.17-0ubuntu0.12.04.1, Copyright (c) 2000-2014 the Libav developers
  
  built on Mar 16 2015 13:26:50 with gcc 4.6.3
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/dev_jackpine/ottawa2017/temp_videos/37a949071acaee714dae829ca8df9b29.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2015-09-04 15:08:21
  
  Duration: 00:00:07.76, start: 0.000000, bitrate: 11756 kb/s
  
  Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 1280x720, 11967 kb/s, 29.81 fps, 90k tbr, 90k tbn, 180k tbc
  
  Metadata:
  
    creation_time   : 2015-09-04 15:08:21
  
  Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 119 kb/s
  
  Metadata:
  
    creation_time   : 2015-09-04 15:08:21
  
  File '/var/www/dev_jackpine/ottawa2017/spinnies/test.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0xc3d580] w:1280 h:720 pixfmt:yuv420p
  
  [scale @ 0xc3dac0] w:1280 h:720 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0x4
  
  [transpose @ 0xc3e280] w:640 h:480 dir:1 -> w:480 h:640 rotation:clockwise vflip:0
  
  [transpose @ 0xc3e7c0] w:480 h:640 dir:1 -> w:640 h:480 rotation:clockwise vflip:0
  
  [transpose @ 0xc3ede0] w:640 h:480 dir:1 -> w:480 h:640 rotation:clockwise vflip:0
  
  [libx264 @ 0xc2b100] MB rate (108000000) > level limit (983040)
  
  [libx264 @ 0xc2b100] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0xc2b100] profile Main, level 5.1
  
  [libx264 @ 0xc2b100] 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
  
  Output #0, mp4, to '/var/www/dev_jackpine/ottawa2017/spinnies/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2015-09-04 15:08:21
  
      encoder         : Lavf53.21.1
  
      Stream #0.0(eng): Video: libx264, yuv420p, 480x640, q=-1--1, 180k tbn, 90k tbc
  
      Metadata:
  
        creation_time   : 2015-09-04 15:08:21
  
      Stream #0.1(eng): Audio: libvo_aacenc, 48000 Hz, stereo, s16, 200 kb/s
  
      Metadata:
  
        creation_time   : 2015-09-04 15:08:21
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
  
  Press ctrl-c to stop encoding

  Here’s an example frame output :

  frame=124398 fps=142 q=33.0 size=   16885kB time=1.38 bitrate=100110.2kbits/s dup=124356 drop=0

  I’ve had the process running the whole time I’ve been writing this question, and so far it’s done... 22 frames.

  What could be the problem ?

• FFmpegMediaPlayer : findLibrary returned null

  8 août 2015, par IceJOKER

  I use https://github.com/wseemann/FFmpegMediaPlayer in my applicaton, but some Adndroid device throw exception :

  java.lang.ExceptionInInitializerError
  
  at ru.mypackage.PlayService.initPlayer(PlayService.java:74)
  
  at ru.mypackage.PlayService.onCreate(PlayService.java:68)
  
  at android.app.ActivityThread.handleCreateService(ActivityThread.java:1949)
  
  at android.app.ActivityThread.access$2500(ActivityThread.java:117)
  
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:989)
  
  at android.os.Handler.dispatchMessage(Handler.java:99)
  
  at android.os.Looper.loop(Looper.java:130)
  
  at android.app.ActivityThread.main(ActivityThread.java:3687)
  
  at java.lang.reflect.Method.invokeNative(Native Method)
  
  at java.lang.reflect.Method.invoke(Method.java:507)
  
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
  
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
  
  at dalvik.system.NativeStart.main(Native Method)
  
  Caused by: java.lang.UnsatisfiedLinkError: Couldn't load avutil: findLibrary returned null
  
  at java.lang.Runtime.loadLibrary(Runtime.java:429)
  
  at java.lang.System.loadLibrary(System.java:554)
  
  at wseemann.media.FFmpegMediaPlayer.<clinit>(FFmpegMediaPlayer.java:620)
  
  ... 13 more
  
  </clinit>

  My project :
  

  [![enter image description here][3]][3]

  Can somebody explain me what’s wrong there ?
  On my device and some other device the app working nice, but on some device (for example : Galaxy Ace (GT-S5830i) Android 2.3.3 - 2.3.7) it throw the exception.

  p.s. about "lib" prefix I understood ( http://developer.android.com/intl/ru/reference/java/lang/System.html#mapLibraryName(java.lang.String) )