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• Can Imageio.getwriter to use codec 265 ?

  21 mars 2024, par GerrikLabra

  I have pip installed imageio[ffmpeg] (2.34.0), but the only FFMPEG codec the imageio wrapper seems to support is h264. When I run the below code with the following codecs, I get the error :

  


  I am trying to get DEVS or DEVLS codecs from the FFMPEG -codecs for my non-audio mp4 videos, any suggestions ?

  


  from imageio import get_writer 
writer=get_writer("test.mp4",format="FFMPEG",mode="I",codec="gif")

Incompatible pixel format 'yuv420p' for codec 'gif', auto-selecting format 'bgr8'
[mp4 @ 000002330fbede40] Could not find tag for codec gif in stream #0, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 --

from imageio import get_writer 
writer=get_writer("test.mp4",format="FFMPEG",mode="I",codec="ffv1")

[mp4 @ 000001cdc94fde40] Could not find tag for codec ffv1 in stream #0, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 -- 


  


• Cross compile FFmpeg with openssl and libsrt by android ndk

  25 janvier 2024, par Mingy

  I am trying to cross-compile FFmpeg using the Android NDK and enable support for OpenSSL and libsrt. After separately compiling OpenSSL and libsrt, when configuring FFmpeg, pkg-config cannot correctly locate the installed OpenSSL and libsrt libraries.

  


  Here are my compilation scripts.
OpenSSL 3.1.4

  


  #!/bin/bash

if [[ ! -d "./openssl" ]]; then
    git clone --depth 1 --branch openssl-3.1.4 https://github.com/openssl/openssl.git
fi

cd openssl

export ANDROID_NDK_ROOT=/home/albert/workspace/DevKit/android/SDK/ndk/25.1.8937393/
PATH=$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin:$PATH

rm -rf ./android
make clean

./Configure android-arm64 \
 -D__ANDROID_API__=28 \
--prefix=$PWD/android/arm64-v8a

make -j $(grep "cpu cores" /proc/cpuinfo | wc -l)
make install

cd ..


  


  libsrt 1.5.3

  


  #!/bin/bash

if [[ ! -d "./srt" ]]; then
    git clone --depth 1 --branch v1.5.3 https://github.com/Haivision/srt.git
fi

export OpenSSL_INSTALL_DIR=$PWD/openssl/android/arm64-v8a

cd srt

rm -rf ./android
make clean

./configure --use-enclib=openssl \
--use-openssl-pc=OFF \
--OPENSSL_INCLUDE_DIR=$OpenSSL_INSTALL_DIR/include \
--OPENSSL_CRYPTO_LIBRARY=$OpenSSL_INSTALL_DIR/lib/libcrypto.a \
--OPENSSL_SSL_LIBRARY=$OpenSSL_INSTALL_DIR/lib/libssl.a \
--CMAKE_PREFIX_PATH=$PWD/install/android/arm64-v8a \
--CMAKE_INSTALL_PREFIX=$PWD/install/android/arm64-v8a \
--CMAKE_ANDROID_NDK=/home/albert/workspace/DevKit/android/SDK/ndk/25.1.8937393 \
--CMAKE_SYSTEM_NAME=Android \
--CMAKE_SYSTEM_VERSION=28 \
--CMAKE_ANDROID_ARCH_ABI=arm64-v8a \
--CMAKE_C_FLAGS="-fPIC" \
--enable-c++11 \
--enable-stdcxx-sync \
--enable-debug=2 \
--enable-logging=0 \
--enable-heavy-logging=0 \
--enable-apps=0

make -j $(grep "cpu cores" /proc/cpuinfo | wc -l)
make install

cd ..


  


  Then I put those install dir to PKG_CONFIG_PATH

  


  export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$PWD/openssl/android/arm64-v8a/lib/pkgconfig:$PWD/srt/install/android/arm64-v8a/lib/pkgconfig


  


  Upon testing, both OpenSSL and SRT can successfully retrieve the version and corresponding linking symbols.

  


  But, When I'm going to configure FFmpeg, Error Occurred

  


  My FFmpeg configurtion script

  


  TOOLCHAIN=/home/albert/workspace/DevKit/android/SDK/ndk/25.1.8937393/toolchains/llvm/prebuilt/linux-x86_64
API=28

./configure \
 --prefix=$PWD/android/arm64-v8a \
 --disable-neon \
 --disable-hwaccels \
 --disable-gpl \
 --disable-postproc \
 --enable-static \
 --enable-jni \
 --disable-mediacodec \
 --disable-decoder=h264_mediacodec \
 --disable-doc \
 --disable-programs \
 --disable-ffmpeg \
 --disable-ffplay \
 --disable-ffprobe \
 --disable-avdevice \
 --disable-symver \
 --cross-prefix=$TOOLCHAIN/bin/llvm- \
 --target-os=android \
 --arch=arm64 \
 --cpu=armv8-a \
 --cc=$TOOLCHAIN/bin/aarch64-linux-android$API-clang \
 --cxx=$TOOLCHAIN/bin/aarch64-linux-android$API-clang++ \
 --enable-cross-compile \
 --sysroot=$TOOLCHAIN/sysroot \
 --enable-version3 \
 --enable-openssl \
 --enable-libsrt \
 --extra-cflags="-DVK_ENABLE_BETA_EXTENSIONS=0 -mno-stackrealign -Os -fpic -march=armv8-a " \
 --extra-ldflags="" \
 $ADDITIONAL_CONFIGURE_FLAG


  


  ERROR: srt >= 1.3.0 not found using pkg-config


  


  config.log

  


  require_pkg_config libsrt srt >= 1.3.0 srt/srt.h srt_socket
check_pkg_config libsrt srt >= 1.3.0 srt/srt.h srt_socket
test_pkg_config libsrt srt >= 1.3.0 srt/srt.h srt_socket
false --exists --print-errors srt >= 1.3.0
ERROR: srt >= 1.3.0 not found using pkg-config


  


  If only enable OpenSSL, then get Error

  


  ERROR: OpenSSL <3.0.0 is incompatible with the gpl


  


  config.log

  


  check_pkg_config openssl openssl >= 3.0.0 openssl/ssl.h OPENSSL_init_ssl
test_pkg_config openssl openssl >= 3.0.0 openssl/ssl.h OPENSSL_init_ssl
false --exists --print-errors openssl >= 3.0.0
ERROR: OpenSSL <3.0.0 is incompatible with the gpl


  


• Error while linking shared library FFMpegJNI to android project

  5 mars 2024, par Dari V

  I have built an ffmpeg module for all the architectures, but when I try to build project to run it on emulator (x86 architecture) i get an error, indicating that the files for x86 architecture are incompatible with elf_i386. The same is for other architectures, i get the error that the files are incompatible. What can i do in this case ?

  


  [2/2] Linking CXX shared library E:\android_studio_projects\projects\IPTVPlayer\app\build\intermediates\cxx\Debug\1h3dp6s4\obj\x86\libffmpegJNI.so
FAILED: E:/android_studio_projects/projects/IPTVPlayer/app/build/intermediates/cxx/Debug/1h3dp6s4/obj/x86/libffmpegJNI.so 
cmd.exe /C "cd . && C:\Users\volos\AppData\Local\Android\Sdk\ndk\25.1.8937393\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe --target=i686-none-linux-android30 --sysroot=C:/Users/volos/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security   -fno-limit-debug-info  -static-libstdc++ -Wl,--build-id=sha1 -Wl,--fatal-warnings -Wl,--gc-sections -Wl,--no-undefined -Qunused-arguments -shared -Wl,-soname,libffmpegJNI.so -o E:\android_studio_projects\projects\IPTVPlayer\app\build\intermediates\cxx\Debug\1h3dp6s4\obj\x86\libffmpegJNI.so CMakeFiles/ffmpegJNI.dir/E_/media3/media-release/libraries/decoder_ffmpeg/src/main/jni/ffmpeg_jni.cc.o  -landroid  E:/media3/media-release/libraries/decoder_ffmpeg/src/main/jni/ffmpeg/android-libs/x86/libswresample.a  E:/media3/media-release/libraries/decoder_ffmpeg/src/main/jni/ffmpeg/android-libs/x86/libavcodec.a  E:/media3/media-release/libraries/decoder_ffmpeg/src/main/jni/ffmpeg/android-libs/x86/libavutil.a  C:/Users/volos/AppData/Local/Android/Sdk/ndk/25.1.8937393/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/lib/i686-linux-android/30/liblog.so  -latomic -lm && cd ."
ld: error: E:/media3/media-release/libraries/decoder_ffmpeg/src/main/jni/ffmpeg/android-libs/x86/libavcodec.a(mpegaudiotabs.o) is incompatible with elf_i386