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• FFMPEG 'Invalid data found when processing input' while scaling an Image

  22 février 2020, par priya verma

  I just installed FFMPEG on a server and I am testing it to see if it works. I am new to this, so I don’t know if I’m doing it correctly. I want to scale and compress an image. I am doing it by following php code -

  exec("ffmpeg -i $inputImg -vf \"scale='-2':'min(480, ih)\" $outputImg 2>&1", $output, $returnStatus);
  
      print_r($output);
  
      echo '<br />'.$returnStatus;

  The thing is it works for some images and for images it gives an error. For ex. I have tried to compress an image and it returns with error -

  ffmpeg version 2.8.15 Copyright (c) 2000-2018 the FFmpeg developers
  
  [1] => built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
  
  [2] => configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg 
  
  --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man 
  
  --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
  
  -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 
  
  -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 
  
  --enable-bzlib --disable-crystalhd --enable-gnutls --enable-ladspa 
  
  --enable-libass --enable-libcdio --enable-libdc1394 --enable-libfdk-aac 
  
  --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm 
  
  --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus 
  
  --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex 
  
  --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 
  
  --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter 
  
  --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping 
  
  --shlibdir=/usr/lib64 --enable-runtime-cpudetect 
  
  [3] => libavutil 54. 31.100 / 54. 31.100 
  
  [4] => libavcodec 56. 60.100 / 56. 60.100 
  
  [5] => libavformat 56. 40.101 / 56. 40.101 
  
  [6] => libavdevice 56. 4.100 / 56. 4.100 
  
  [7] => libavfilter 5. 40.101 / 5. 40.101 
  
  [8] => libavresample 2. 1. 0 / 2. 1. 0 
  
  [9] => libswscale 3. 1.101 / 3. 1.101 
  
  [10] => libswresample 1. 2.101 / 1. 2.101 
  
  [11] => libpostproc 53. 3.100 / 53. 3.100 
  
  [12] => /tmp/phpjLYmRd: Invalid data found when processing input

  Am I doing it incorrectly or what ? Because it does work with some images and for some it doesn’t ! Also, is this the correct way to scale and compress an Image using FFMPEG, would love to get some insights.

• libx264 not found when compiling 64 bit ffmpg

  11 juillet 2017, par Tamilraj

  export PLATFORM=$NDK_BASE/platforms/android-21/arch-arm64
  
  export PREBUILT=$NDK_BASE/toolchains/aarch64-linux-android-4.9/prebuilt
  
  export PREFIX=/android-lib/arm64
  
  
  
  ./configure --cross-prefix=$PREBUILT/windows-x86_64/bin/aarch64-linux-android- \
  
  --sysroot=$PLATFORM \
  
  --host=aarch64-linux \
  
  --enable-pic \
  
  --enable-static \
  
  --extra-cflags="-fPIE -pie" \
  
  --extra-ldflags="-fPIE -pie" \
  
  --disable-cli \
  
  --disable-asm \
  
  --prefix=$X264_OUT_PATH/arm64 \

  This is my setup_x264_arm64.sh and when i compile it does not show any error and compiled successfully.But when compile

    export PLATFORM=$NDK_BASE/platforms/android-21/arch-arm64
  
  export PREBUILT=$NDK_BASE/toolchains/aarch64-linux-android-4.9/prebuilt
  
  export PREFIX=../android-lib/arm64
  
  
  
  echo $X264_OUT_PATH/arm64/include
  
  sh configure --prefix=$FFMPEG_OUT_PATH/arm64 \
  
  $DEBUG_FLAG \
  
  --arch=arm64 \
  
  --cpu=cortex-a53 \
  
  --target-os=linux \
  
  --enable-runtime-cpudetect \
  
  --enable-pic \
  
  --enable-shared \
  
  --enable-nonfree \
  
  --enable-cross-compile \
  
  --enable-static \
  
  --cross-prefix=$PREBUILT/windows-x86_64/bin/aarch64-linux-android- \
  
  --sysroot=$PLATFORM \
  
  --extra-cflags="-I$X264_OUT_PATH/arm64/include -Wno-deprecated-declarations -Wno-format-extra-args -Wno-pointer-sign -Wno-implicit-function-declaration -Wno-parentheses  -Wno-format-extra-args -Wno-unused-result -Wno-traditional -fPIE -pie" \
  
  --extra-ldflags="-L$X264_OUT_PATH/arm64/lib" \
  
  \
  
  --enable-version3 \
  
  --enable-gpl \
  
  --disable-opencl \
  
  \
  
  --disable-doc \
  
  --enable-yasm \
  
  \
  
  --enable-decoders \
  
  --enable-encoders \
  
  --enable-muxers \
  
  --enable-demuxers \
  
  --enable-parsers \
  
  --enable-protocols \
  
  --enable-filters \
  
  --enable-avresample \
  
  --disable-libfreetype \
  
  \
  
  --disable-indevs \
  
  --disable-indev=lavfi \
  
  --disable-outdevs \
  
  \
  
  --enable-hwaccels \
  
  \
  
  --disable-ffmpeg \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --disable-network \
  
  \
  
  --enable-thumb \
  
  --enable-encoder=libx264 \
  
  --enable-libx264 \
  
  --disable-muxer=md5
  
  
  
  
  
  popd; popd

  this one i got libx264 not found error .Can anyone pls help me .Thanks in advance

• aacenc_pred : rework the way prediction is done

  29 août 2015, par Rostislav Pehlivanov

  aacenc_pred : rework the way prediction is done
  This commit completely alters the algorithm of prediction.
  
  The original commit which introduced prediction was completely
  
  incorrect to even remotely care about what the actual coefficients
  
  contain or whether any options were enabled. Not my actual fault.
  This commit treats prediction the way the decoder does and expects
  
  to do : like lossy encryption. Everything related to prediction now
  
  happens at the very end but just before quantization and encoding
  
  of coefficients. On the decoder side, prediction happens before
  
  anything has had a chance to even access the coefficients.
  Also the original implementation had problems because it actually
  
  touched the band_type of special bands which already had their
  
  scalefactor indices marked and it’s a wonder the asserion wasn’t
  
  triggered when transmitting those.
  Overall, this now drastically increases audio quality and you should
  
  think about enabling it if you don’t plan on playing anything encoded
  
  on really old low power ultra-embedded devices since they might not
  
  support decoding of prediction or AAC-Main. Though the specifications
  
  were written ages ago and as times change so do the FLOPS.
  Signed-off-by : Rostislav Pehlivanov <atomnuker@gmail.com>
  

  • [DH] libavcodec/aac.h
  • [DH] libavcodec/aaccoder.c
  • [DH] libavcodec/aacenc.c
  • [DH] libavcodec/aacenc.h
  • [DH] libavcodec/aacenc_pred.c
  • [DH] libavcodec/aacenc_pred.h