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A/libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0
16 mai 2016, par PedroI’m working with javacv and when I try run my app with Android 6, it crashes.
The app only crash with android 6. I tested with android N, android 5 and android 4.4
the app crash when do a instance ofFFmpegFrameRecorder
class.
This is the code of my class :public class MainActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new FFmpegFrameRecorder("", 320, 240, 1);
}
}this is my log error :
--------- beginning of crash
05-16 14:46:15.845 6144-6144/com.example.pedro.ffmpeg30 A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 6144 (.pedro.ffmpeg30)
05-16 14:46:15.902 371-371/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
05-16 14:46:15.905 371-371/? A/DEBUG: Build fingerprint: 'google/shamu/shamu:6.0.1/MMB29K/2419427:user/release-keys'
05-16 14:46:15.910 371-371/? A/DEBUG: Revision: '0'
05-16 14:46:15.910 371-371/? A/DEBUG: ABI: 'arm'
05-16 14:46:15.915 371-371/? A/DEBUG: pid: 6144, tid: 6144, name: .pedro.ffmpeg30 >>> com.example.pedro.ffmpeg30 <<<
05-16 14:46:15.915 371-371/? A/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
05-16 14:46:15.912 371-371/? W/debuggerd: type=1400 audit(0.0:525): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.912 371-371/? W/debuggerd: type=1400 audit(0.0:526): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.912 371-371/? W/debuggerd: type=1400 audit(0.0:527): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.912 371-371/? W/debuggerd: type=1400 audit(0.0:528): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:529): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:530): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:531): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:532): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:533): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:534): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:535): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.922 371-371/? W/debuggerd: type=1400 audit(0.0:536): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.940 371-371/? A/DEBUG: r0 00000000 r1 00000002 r2 b6811031 r3 a0f5de7c
05-16 14:46:15.940 371-371/? A/DEBUG: r4 a0f59594 r5 b67c1a61 r6 b362f1a4 r7 00000001
05-16 14:46:15.940 371-371/? A/DEBUG: r8 b6f4c6ec r9 0000000b sl b362f1a4 fp b6f452fc
05-16 14:46:15.941 371-371/? A/DEBUG: ip fffffe8c sp bea86820 lr a0efcec1 pc a0efe58a cpsr 000d0030
05-16 14:46:15.932 371-371/? W/debuggerd: type=1400 audit(0.0:537): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.964 371-371/? A/DEBUG: backtrace:
05-16 14:46:15.965 371-371/? A/DEBUG: #00 pc 0001a58a /data/data/com.example.pedro.ffmpeg30/cache/javacpp23106072121027/libc.so
05-16 14:46:15.965 371-371/? A/DEBUG: #01 pc 00016695 /data/data/com.example.pedro.ffmpeg30/cache/javacpp23106072121027/libc.so
05-16 14:46:15.965 371-371/? A/DEBUG: #02 pc 00002465 /system/bin/linker (__dl__ZN6soinfo13call_functionEPKcPFvvE+48)
05-16 14:46:15.965 371-371/? A/DEBUG: #03 pc 0000252f /system/bin/linker (__dl__ZN6soinfo10call_arrayEPKcPPFvvEjb+134)
05-16 14:46:15.965 371-371/? A/DEBUG: #04 pc 000026f5 /system/bin/linker (__dl__ZN6soinfo17call_constructorsEv+160)
05-16 14:46:15.965 371-371/? A/DEBUG: #05 pc 00006115 /system/bin/linker (__dl__Z9do_dlopenPKciPK17android_dlextinfo+224)
05-16 14:46:15.966 371-371/? A/DEBUG: #06 pc 00001c95 /system/bin/linker (__dl_dlopen+20)
05-16 14:46:15.966 371-371/? A/DEBUG: #07 pc 0025b13b /system/lib/libart.so (art::JavaVMExt::LoadNativeLibrary(_JNIEnv*, std::__1::basic_string, std::__1::allocator<char> > const&, _jobject*, std::__1::basic_string, std::__1::allocator<char> >*)+650)
05-16 14:46:15.966 371-371/? A/DEBUG: #08 pc 002d13d7 /system/lib/libart.so (art::Runtime_nativeLoad(_JNIEnv*, _jclass*, _jstring*, _jobject*, _jstring*)+194)
05-16 14:46:15.962 371-371/? W/debuggerd: type=1400 audit(0.0:538): avc: denied { search } for name="com.example.pedro.ffmpeg30" dev="dm-1" ino=742565 scontext=u:r:debuggerd:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=dir permissive=0
05-16 14:46:15.966 371-371/? A/DEBUG: #09 pc 738b0105 /data/dalvik-cache/arm/system@framework@boot.oat (offset 0x1ec9000)
05-16 14:46:16.339 863-6279/? W/ActivityManager: Force finishing activity com.example.pedro.ffmpeg30/.MainActivity
05-16 14:46:16.339 371-371/? A/DEBUG: Tombstone written to: /data/tombstones/tombstone_07
05-16 14:46:16.339 371-371/? E/DEBUG: AM write failed: Broken pipe
</char></char>I’m using the last version downloaded here :
http://search.maven.org/#search|ga|1|bytedecomy gradle dependencies :
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile files('libs/javacv-1.2.jar')
compile files('libs/javacpp-1.2.jar')
compile files('libs/ffmpeg-3.0.2-1.2.jar')
compile files('libs/ffmpeg-3.0.2-1.2-android-arm.jar')
} -
How to use constrained/capped bit rate mode in FFmpeg
23 avril 2021, par AreteI used FFmpeg with this command to convert a video :


ffmpeg -i input -c:v libx264 -x264-params opencl=true -preset veryslow -crf 19 -maxrate 7000k -profile:v high -level 4.0 -bf 2 -coder 1 -pix_fmt yuv420p -c:a copy output.mkv



Note that I set
-maxrate 7000k
to set the maximum bit rate for the video. Still, the end result video has a maximum bit rate of 38.0 Mb/s.

Here are the results before (to the left) and after (to the right), if that helps.


Am I using
maxrate
properly ? Should not the video be capped at 7000 kb/s ?