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  • Android FFMPEG video editing operation failed

    30 mai 2022, par Bipin Vayalu

    I am using FFMPEG in my Android app for video cropping and trimming but when I execute the following command on a specific video. FFMPEG command execution failed and the app crashed.

    


    Command :

    


    ffmpeg -y -i "/storage/emulated/0/DCIM/Camera/Test-Video.mp4" -crf 19 -color_primaries 1 -color_trc 1 -colorspace 1 -vcodec h264 -acodec aac -ss 00:00:00 -t 00:00:15 -async 1 -vf "crop=540:539:0:0:exact=0 , scale='if(gt(iw,ih),min(640,iw),-2)':'if(gt(iw,ih),-2,min(640,ih))'" "/data/user/0/com.bipin.myapp/cache/Test-Video_16535454525974982000318197164476.mp4"


    


    Failure logs :

    


    2022-05-26 11:40:52.605 5308-9484/com.bipin.myapp D/[RxCachedThreadScheduler-11;FFmpegUtil#performVideoOperation:151]: Debug - performVideoOperation - Source File: Test-Video.mp4, size: 9.697972297668457 MBs
2022-05-26 11:40:52.605 5308-9484/com.bipin.myapp D/[RxCachedThreadScheduler-11;FFmpegUtil#performVideoOperation:159]: Debug - performVideoOperation - Command: -y -i "/storage/emulated/0/DCIM/Camera/Test-Video.mp4" -crf 19 -color_primaries 1 -color_trc 1 -colorspace 1 -vcodec h264 -acodec aac -ss 00:00:00 -t 00:00:15 -async 1 -vf "crop=540:539:0:0:exact=0 , scale='if(gt(iw,ih),min(640,iw),-2)':'if(gt(iw,ih),-2,min(640,ih))'" "/data/user/0/com.bipin.myapp/cache/Test-Video_16535454525974982000318197164476.mp4"
2022-05-26 11:40:52.607 5308-9484/com.bipin.myapp I/mobile-ffmpeg: Loading mobile-ffmpeg.
2022-05-26 11:40:52.617 5308-9484/com.bipin.myapp I/mobile-ffmpeg: Loaded mobile-ffmpeg-min-gpl-arm64-v8a-4.4-lts-20200724.
2022-05-26 11:40:52.619 5308-9485/com.bipin.myapp D/mobile-ffmpeg: Callback thread started.
2022-05-26 11:40:52.620 5308-9485/com.bipin.myapp I/mobile-ffmpeg: ffmpeg version v4.4-dev-416
2022-05-26 11:40:52.620 5308-9485/com.bipin.myapp I/mobile-ffmpeg:  Copyright (c) 2000-2020 the FFmpeg developers
2022-05-26 11:40:52.620 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.620 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
2022-05-26 11:40:52.620 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android21-clang --cxx=aarch64-linux-android21-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libx264 --enable-gpl --enable-libxvid --enable-gpl --enable-libx265 --enable-gpl --enable-libvidstab --enable-gpl --disable-sdl2 --enable-zlib --enable-mediacodec
2022-05-26 11:40:52.621 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libavutil      56. 55.100 / 56. 55.100
2022-05-26 11:40:52.621 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libavcodec     58. 96.100 / 58. 96.100
2022-05-26 11:40:52.621 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libavformat    58. 48.100 / 58. 48.100
2022-05-26 11:40:52.622 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libavdevice    58. 11.101 / 58. 11.101
2022-05-26 11:40:52.622 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libavfilter     7. 87.100 /  7. 87.100
2022-05-26 11:40:52.622 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libswscale      5.  8.100 /  5.  8.100
2022-05-26 11:40:52.622 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   libswresample   3.  8.100 /  3.  8.100
2022-05-26 11:40:52.638 5308-5308/com.bipin.myapp D/InputMethodManager: startInputInner - Id : 0
2022-05-26 11:40:52.638 5308-5308/com.bipin.myapp I/InputMethodManager: startInputInner - mService.startInputOrWindowGainedFocus
2022-05-26 11:40:52.645 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/Camera/Test-Video.mp4':
2022-05-26 11:40:52.645 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   Metadata:
2022-05-26 11:40:52.645 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     major_brand     : 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: mp42
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     minor_version   : 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 1
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     compatible_brands: 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: isommp41mp42
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     creation_time   : 
2022-05-26 11:40:52.646 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 2022-04-05T14:20:18.000000Z
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   Duration: 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 00:00:15.48
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: , start: 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 0.000000
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: , bitrate: 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 5255 kb/s
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     Stream #0:0
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: (und)
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 540x960, 5251 kb/s
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: , 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 30.04 fps, 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 30 tbr, 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 600 tbn, 
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 1200 tbc
2022-05-26 11:40:52.647 5308-9485/com.bipin.myapp I/mobile-ffmpeg:  (default)
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     Metadata:
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       creation_time   : 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 2022-04-05T14:20:18.000000Z
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       handler_name    : 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Core Media Video
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Stream mapping:
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   Stream #0:0 -> #0:0
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg:  (h264 (native) -> h264 (libx264))
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.648 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Press [q] to stop, [?] for help
2022-05-26 11:40:52.673 5308-9485/com.bipin.myapp W/mobile-ffmpeg: [graph 0 input from stream 0:0 @ 0xb400007bf58e0ed0] sws_param option is deprecated and ignored
2022-05-26 11:40:52.674 5308-9485/com.bipin.myapp I/mobile-ffmpeg: [libx264 @ 0xb400007c65974720] using cpu capabilities: ARMv8 NEON
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: [libx264 @ 0xb400007c65974720] profile High, level 3.0, 4:2:0, 8-bit
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: [libx264 @ 0xb400007c65974720] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=19.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Output #0, mp4, to '/data/user/0/com.bipin.myapp/cache/Test-Video_16535454525974982000318197164476.mp4':
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg:   Metadata:
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     major_brand     : 
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: mp42
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     minor_version   : 
2022-05-26 11:40:52.678 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 1
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     compatible_brands: 
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: isommp41mp42
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     encoder         : 
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Lavf58.48.100
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     Stream #0:0
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: (und)
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: : Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(bt709), 540x538, q=-1--1
2022-05-26 11:40:52.679 5308-9485/com.bipin.myapp I/mobile-ffmpeg: , 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 30 fps, 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 15360 tbn, 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 30 tbc
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg:  (default)
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     Metadata:
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       creation_time   : 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 2022-04-05T14:20:18.000000Z
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       handler_name    : 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Core Media Video
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       encoder         : 
2022-05-26 11:40:52.680 5308-9485/com.bipin.myapp I/mobile-ffmpeg: Lavc58.96.100 libx264
2022-05-26 11:40:52.681 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.681 5308-9485/com.bipin.myapp I/mobile-ffmpeg:     Side data:
2022-05-26 11:40:52.681 5308-9485/com.bipin.myapp I/mobile-ffmpeg:       
2022-05-26 11:40:52.681 5308-9485/com.bipin.myapp I/mobile-ffmpeg: cpb: 
2022-05-26 11:40:52.682 5308-9485/com.bipin.myapp I/mobile-ffmpeg: bitrate max/min/avg: 0/0/0 buffer size: 0 
2022-05-26 11:40:52.684 5308-9485/com.bipin.myapp I/mobile-ffmpeg: vbv_delay: N/A
2022-05-26 11:40:52.684 5308-9485/com.bipin.myapp I/mobile-ffmpeg: 
2022-05-26 11:40:52.797 5308-5308/com.bipin.myapp D/[main;BaseDaggerFragment#onDestroyView:90]: Debug - PostMediaTabFragment onDestroyView called
2022-05-26 11:40:52.798 5308-5308/com.bipin.myapp D/[main;ViewBindingBaseFragment#onDestroyView:32]: Debug - PostMediaTabFragment onDestroyView called
2022-05-26 11:40:52.895 5308-9521/com.bipin.myapp A/libc: Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0xb400007a53e6d000 in tid 9521 (RxCachedThreadS), pid 5308 (com.bipin.myapp)
2022-05-26 11:40:54.302 9524-9524/? A/DEBUG: Cmdline: com.bipin.myapp
2022-05-26 11:40:54.302 9524-9524/? A/DEBUG: pid: 5308, tid: 9521, name: RxCachedThreadS  >>> com.bipin.myapp <<<
2022-05-26 11:40:54.302 9524-9524/? A/DEBUG:       #00 pc 000000000058b8d0  /data/app/~~QE7_ItG7A3ZSxt4PIZf-2w==/com.bipin.myapp-o6_afbhi9zItP6DEnUAd6w==/base.apk!libavcodec.so
2022-05-26 11:40:54.398 1189-1447/? W/ActivityManager: Missing app error report, app = com.bipin.myapp crashing = true notResponding = false
2022-05-26 11:40:54.407 1189-9530/? W/ActivityManager: crash : com.bipin.myapp,10342


    


  • FFMpeg on Android, undefined references to libavcodec functions, although it is listed on command line

    24 mars 2019, par dimsuz

    I have a problem with unresolved references to ffmpeg’s libavcodec functions, so far failed to find the answer in other places (including my mind) :)

    Let me describe my setup - it takes space, but is really basic, it might be that I’m failing to see some error...

    I built an FFMPeg with ndk r5 toolchain, ffmpeg port I got from http://bambuser.com/opensource (as recommended in other questions here). It built fine, so I put several static libraries in my project like this :

    <project>/jni/bambuser_ffmpeg/libavcodec.a
    
<project>/jni/bambuser_ffmpeg/libavformat.a
    
<project>/jni/bambuser_ffmpeg/libavcore.a
    
<project>/jni/bambuser_ffmpeg/libavutil.a
    
</project></project></project></project>

    Next, I created an Android.mk in bambuser_ffmpeg folder to list these libs as a prebuilt ones :

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := bambuser-libavcore
    
LOCAL_SRC_FILES := libavcore.a
    
include $(PREBUILT_STATIC_LIBRARY)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := bambuser-libavformat
    
LOCAL_SRC_FILES := libavformat.a
    
include $(PREBUILT_STATIC_LIBRARY)
    

    
(same for other two libs)

    Next, I have another module which references these libs in its Android.mk, sets up include paths, etc :

    LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    

    
LOCAL_MODULE := ffmpegtest
    
LOCAL_STATIC_LIBRARIES := bambuser-libavcodec bambuser-libavcore bambuser-libavformat bambuser-libavutil
    
LOCAL_SRC_FILES := ffmpeg_test.cpp
    
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../bambuser_ffmpeg/include
    
LOCAL_LDLIBS    := -llog -lz
    

    
include $(BUILD_SHARED_LIBRARY)

    And finally I have my ffmpeg_test.cpp which is really basic, like this :

    #include 
    

    
extern "C" {
    
#include <libavcodec></libavcodec>avcodec.h>
    
#include <libavformat></libavformat>avformat.h>
    
}
    

    
extern "C" {
    
    JNIEXPORT jint JNICALL Java_com_the7art_ffmpegtest_PaintThread_testFFMpeg(JNIEnv* env, jobject obj, jstring fileName);
    
}
    

    
JNIEXPORT jint JNICALL Java_com_the7art_ffmpegtest_PaintThread_testFFMpeg(JNIEnv* env, jobject obj, jstring fileName)
    
{
    
    av_register_all();
    
    return 0;
    
}

    When I run ndk-build, it compiles fine, but when linking it prints an unresolved reference to almost every function in libavcodec. Looks like only this lib’s functions are failing to be located :

    /home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(allformats.o): In function `av_register_all':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/allformats.c:47: undefined reference to `avcodec_register_all'
    
/home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o): In function `parse_frame_rate':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:3240: undefined reference to `av_parse_video_rate'
    
/home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o): In function `parse_image_size':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:3234: undefined reference to `av_parse_video_size'
    
/home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o): In function `flush_packet_queue':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:1277: undefined reference to `av_free_packet'
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:1283: undefined reference to `av_free_packet'
    
/home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o): In function `get_audio_frame_size':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:766: undefined reference to `av_get_bits_per_sample'
    
/home/dimka/src/mobile/android/ffmpegtest/obj/local/armeabi/libavformat.a(utils.o): In function `ff_interleave_add_packet':
    
/home/dimka/work/suzy/tmp/ffmpeg-android/ffmpeg/libavformat/utils.c:2909: undefined reference to `av_dup_packet'
    
and so on...

    I fail to figure why this is happening. I tried running ndk-build V=1 to check the actual linking command, and libavcodec is sitting there perfectly right, like it should. All other ffmpeg libs are there too.

    Any hints ?

  • Doing parallel ffmpeg conversions on dozens of servers simultaneously. Is there a better way ? [on hold]

    22 mai 2019, par user15063

    Im currently working on a fairly large site, that requires several thousands of files to be encoded with ffmpeg into flash format (along with thumbnails creation, mobile file encoding). Average encode runs for about 5-15 minutes, as they are fairly large source files. After the job is complete, the outputs need to be shuttled to different servers (flash file to one box, thumbnails to another, mobile file to another, and original file to another).

    During this processes (which is 13 steps at this point) there is a LOT that can go wrong, at any given time (bad files, stuck encodes, network latency, dying servers, spiking lead), so error handling is a bitch.

    Are there any existing solutions for this type of work ? Or do I have to just keep tweaking my homebrew scripts ?

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