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Sur d’autres sites (7433)

  • Unable to port FFmpeg C library into android

    13 décembre 2017, par Navjot Bedi

    What I exactly want to-do : Access the ffmpeg.c file to modify the int main(int argc, char **argv) function to JNI and passing the command of ffmpeg as string.

    I have tried to port ffmpeg C library to android(ARM processor). I followed following different ways to do this.

    1st Try : using official ffmpeg installation documentation. Steps as follows

    a) git clone git ://source.ffmpeg.org/ffmpeg.git ffmpeg

    b) Read the INSTALL file.

    c) Download x264 library and build by using build_x264.sh which build successfully.

        NDK=/home/nav/Work/android/ndk
    
    PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt
    
    PLATFORM=$NDK/platforms/android-8/arch-arm
    
    PREFIX=/home/nav/28ffmpeg/android-ffmpeg                
    
    ./configure --prefix=$PREFIX --enable-static --enable-pic --disable-asm --disable-cli --host=arm-linux --cross-prefix=$PREBUILT/linux-x86/bin/arm-linux-androideabi- --sysroot=$PLATFORM
    
  make
    
  sudo make install
    
  sudo ldconfig

    d) Then I download ffmpeg library from (http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2) build it by using build_android.sh

    #!/bin/bash
    

    
NDK=/home/nav/Work/android/ndk
    
PLATFORM=$NDK/platforms/android-8/arch-arm
    
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86
    
PREFIX=/home/nav/28ffmpeg/android-ffmpeg
    

    
function build_one
    
                {
    
                ./configure --target-os=linux --prefix=$PREFIX \
    
                --enable-cross-compile \
    
                --enable-runtime-cpudetect \
    
                --disable-asm \
    
                --arch=arm \
    
                --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    
                --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
    
                --disable-stripping \
    
                --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
    
                --sysroot=$PLATFORM \
    
                --enable-nonfree \
    
                --enable-version3 \
    
                --disable-everything \
    
                --enable-gpl \
    
                --disable-doc \
    
                --enable-avresample \
    
                --enable-demuxer=rtsp \
    
                --enable-muxer=rtsp \
    
                --disable-ffplay \
    
                --disable-ffserver \
    
                --enable-ffmpeg \
    
                --disable-ffprobe \
    
                --enable-libx264 \
    
                --enable-encoder=libx264 \
    
                --enable-decoder=h264 \
    
                --enable-protocol=rtp \
    
                --enable-hwaccels \
    
                --enable-zlib \
    
                --disable-devices \
    
                --disable-avdevice \
    
--extra-cflags="-I/home/android-ffmpeg/include -fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a" \
    
                --extra-ldflags="-L/home/android-ffmpeg/lib"
    
                make -j4 install
    

    
$PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
    
$PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -L$PREFIX/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavfilter/libavfilter.a libavresample/libavresample.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -llog -lx264 --warn-once --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a
    
                }
    

    
                build_one

    e) Initially it works perfectly. But after that error comes :

    libavformat/libavformat.a(log2_tab.o):(.rodata+0x0): multiple definition of `ff_log2_tab'
    
libavcodec/libavcodec.a(log2_tab.o):(.rodata+0x0): first defined here
    
libavutil/libavutil.a(log2_tab.o):(.rodata+0x0): multiple definition of `ff_log2_tab'
    
libavcodec/libavcodec.a(log2_tab.o):(.rodata+0x0): first defined here
    
build_android.sh: 48: build_one: not found

    Result : libffmpeg.so not found.

    2nd Try : Then I follow steps in http://dl.dropbox.com/u/22605641/ffmpeg_android/main.html-> Builds

    a) I downloaded Pre-Build libffmpeg.so from above link.

    b) Add libffmpeg.so to libs/armeabi/ .

    c) Make Android.mk

    include $(CLEAR_VARS)
    
LOCAL_MODULE := ffmpeg
    
LOCAL_SRC_FILES := libffmpeg.so
    
include $(PREBUILT_SHARED_LIBRARY)
    

    
LOCAL_PATH := $(call my-dir)
    

    
include $(CLEAR_VARS)
    
LOCAL_MODULE := main
    
LOCAL_STATIC_LIBRARIES += ffmpeg
    
LOCAL_SRC_FILES := ffmpeg-test.c
    
include $(BUILD_SHARED_LIBRARY)

    d) Then I do all ndk set up and all.Copy ffmpeg.c from library to ffmpeg-test.c by changing its int main function to my JNI functin and include all necessary include files.

    Error :

    Console :

      /home/nav/Work/android/ndk/ndk-build all 
    
Prebuilt       : libffmpeg.so <= jni/
    
Install        : libffmpeg.so => libs/armeabi/libffmpeg.so
    
Compile thumb  : main <= ffmpeg-test.c
    
jni/ffmpeg-test.c: In function 'print_report':
    
jni/ffmpeg-test.c:1139:94: warning: incompatible implicit declaration of built-in function 'log2' [enabled by default]
    
SharedLibrary  : libmain.so
    
/home/nav/Work/android/ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: ./obj/local/armeabi/objs/main/ffmpeg-test.o: in function check_keyboard_interaction:jni/ffmpeg-test.c:2496: error: undefined reference to 'qp_hist'

    and many other undefined references.

  • ffmpeg for android, out of memory on encoding h264

    15 juin 2018, par Rafael Lima

    I’m getting an weird error when enconding a video with ffmpeg on android

    Failed to inject frame into filter network: Out of memory

    Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

    This problem happens to any video vertical videos recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

    this is ffmpeg output

    ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
    
  configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
    
  Metadata:  
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-06-09T04:28:55.000000Z
    
    location        : -08.0638-034.8723/
    
    location-eng    : -08.0638-034.8723/
    
    com.android.version: 7.0
    
  Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : SoundHandle
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Out of memory
    
Error while processing the decoded data for stream #0:0
    
Conversion failed!

    =====================UPDATE===================

    I re-run the command with -v 9 -loglevel 99 and got paste the log file at :

    https://pastebin.com/ihawsPvZ

    If someone have real good expertise at ffmpeg i would apreciate very much the help

    =====================UPDATE 2=================

    I made more tests and the problem happens only when i record the video with my phone at vertical (other videos in vertical work and videos from my phone in horizontal also work)

    ==================UPDATE 3====================
    I detected the problem happens to ANY video with the

    Metadata:
    
      rotate          : 90 (or any value)

    It was suggested to use -noautorotate as workaround and it WORKDED, but this implies in tons of other complications ex :

    -if i decide to apply any filter to the video, it will be applied to the horizontal version but the video will be played at vertical producing a totally different effect

    ex : https://i.stack.imgur.com/R3jXJ.jpg (at this photo the drawtext filter should be placed at bottom line with horizontal text, but as ffmpeg can’t handle the orientation it is missplaced and rotated at runtime producing this vertical message)

    -I checked and if I set -metadata:s:v:0 rotate= while enconding it has no effect ex :

    ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate= output.mp4
    will remove the rotate metadata and produce a non rotated video

    BUT
    ffmpeg -i input.mp4 -c:v libx264 -metadata:s:v:0 rotate= output.mp4
    will keep the metadata and the produced video will be played rotated (this behavior was also noticed on the official ffmpeg 4.0 binaries for windows available at ffmpeg website)

    I’M STILL LOOKING FOR A BETTER SOLUTION, THANKS FOR THE HELP

  • ffmpeg for android, out of memory on encoding h264

    15 juin 2018, par Rafael Lima

    I’m getting an weird error when enconding a video with ffmpeg on android

    Failed to inject frame into filter network: Out of memory

    Althoug is a pretty objective error, I do believe this is some "generic message" for another problem, because the video I used for testing is 17MB and less than 11 seconds length and I’ve sucessfully tested with videos bigger than 200MB and longer than 5min

    This problem happens to any video vertical videos recorded on my phone (the videos were recorded and play fine on my phone but i cant reencode them... other video h264 were encoded fine on same phone)

    this is ffmpeg output

    ffmpeg version 4.0 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Android (4691093 based on r316199) clang version 6.0.2 (https://android.googlesource.com/toolchain/clang 183abd29fc496f55536e7d904e0abae47888fc7f) (https://android.googlesource.com/toolchain/llvm 34361f192e41ed6e4e8f9aca80a4ea7e9856f327) (based on LLVM 6.0.2svn)
    
  configuration: --prefix=/home/rafa/Desktop/m4/build --target-os=android --arch=i686 --cpu=i686 --cross-prefix=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/i686-linux-android- --enable-cross-compile --cc=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang --cxx=/home/rafa/Desktop/m4/ndk/toolchain/i686/bin/clang++ --pkg-config=/usr/bin/pkg-config --pkg-config-flags=--static --enable-pic --enable-gpl --enable-nonfree --enable-static --disable-shared --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-doc --disable-devices --enable-libx264 --enable-libfdk-aac --enable-bsf=aac_adtstoasc --disable-asm
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/data/com.tomatedigital.toolsforinstagram/qqq.mp4':
    
  Metadata:  
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-06-09T04:28:55.000000Z
    
    location        : -08.0638-034.8723/
    
    location-eng    : -08.0638-034.8723/
    
    com.android.version: 7.0
    
  Duration: 00:00:09.06, start: 0.000000, bitrate: 17349 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 17088 kb/s, SAR 1:1 DAR 16:9, 30.04 fps, 30 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 255 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-06-09T04:28:55.000000Z
    
      handler_name    : SoundHandle
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Out of memory
    
Error while processing the decoded data for stream #0:0
    
Conversion failed!

    =====================UPDATE===================

    I re-run the command with -v 9 -loglevel 99 and got paste the log file at :

    https://pastebin.com/ihawsPvZ

    If someone have real good expertise at ffmpeg i would apreciate very much the help

    =====================UPDATE 2=================

    I made more tests and the problem happens only when i record the video with my phone at vertical (other videos in vertical work and videos from my phone in horizontal also work)

    ==================UPDATE 3====================
    I detected the problem happens to ANY video with the

    Metadata:
    
      rotate          : 90 (or any value)

    It was suggested to use -noautorotate as workaround and it WORKDED, but this implies in tons of other complications ex :

    -if i decide to apply any filter to the video, it will be applied to the horizontal version but the video will be played at vertical producing a totally different effect

    ex : https://i.stack.imgur.com/R3jXJ.jpg (at this photo the drawtext filter should be placed at bottom line with horizontal text, but as ffmpeg can’t handle the orientation it is missplaced and rotated at runtime producing this vertical message)

    -I checked and if I set -metadata:s:v:0 rotate= while enconding it has no effect ex :

    ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate= output.mp4
    will remove the rotate metadata and produce a non rotated video

    BUT
    ffmpeg -i input.mp4 -c:v libx264 -metadata:s:v:0 rotate= output.mp4
    will keep the metadata and the produced video will be played rotated (this behavior was also noticed on the official ffmpeg 4.0 binaries for windows available at ffmpeg website)

    I’M STILL LOOKING FOR A BETTER SOLUTION, THANKS FOR THE HELP

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