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• FFmpeg Drawbox Errors ?

  12 mars 2021, par Alex Gurr

  Using ffmpeg version 4.3.2.

  


  Command :

  


  ffmpeg -y

  -i /usr/src/app/backgrounds/pink-blue.jpg
  -i files/fuzzy-octopus-5/path/file.webm
  -i files/fuzzy-octopus-5/path/file.webm
  -i /usr/src/app/logo.png
  -filter_complex "
    [0]drawbox=x=-140:y=(((H-th)/2) - 205):w=840:h=490:color=white@0.2:t=fill,
       drawbox=x=770:y=(((H-th)/2) - 205):w=840:h=490:color=white@0.2:t=fill[bg]; 
    ...


  


  However I am getting the following errors ?

  


  Error while processing the decoded data for stream #3:0
Failed to inject frame into filter network: Invalid argument
Error reinitializing filters!
[Parsed_drawbox_0 @ 0x564a87058e80] Failed to configure input pad on Parsed_drawbox_0
[Parsed_drawbox_0 @ 0x564a87058e80] Error when evaluating the expression '(((H-th)/2) - 205)'.
Last message repeated 5 times
[Parsed_drawbox_0 @ 0x564a87058e80] [Eval @ 0x7ffcf25dc650] Undefined constant or missing '(' in 'H-th)/2)-205)'


  


  I have the right amount of brackets and this definitely works on my local machine (macOS). It's only throwing this error in our deployed AWS EC2 linux instance.

  


  Any ideas ? Thanks !

  


  Update : Tried replacing th with h but get the same error

  


• FFmpeg/Avconv unable to copy subtitles due to unsupported codec ?

  27 novembre 2015, par its_me

  I’ve got an mp4 file with these streams (avconv -i file.mp4 or ffmpeg -i file.mp4) :

  Stream #0.0(eng): Audio: aac, 48000 Hz, stereo, fltp, 125 kb/s (default)
  
  Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, fltp, 384 kb/s
  
  Stream #0.2(eng): Video: h264 (Main), yuv420p, 1280x568, 4027 kb/s, PAR 1:1 DAR 160:71, 23.98 fps, 2997 tbn, 50 tbc (default)
  
  Stream #0.3(eng): Subtitle: c608 / 0x38303663, 0 kb/s
  
  Stream #0.4(und): Subtitle: text / 0x74786574
  
  Stream #0.5: Video: mjpeg, yuvj420p, 667x1000 [PAR 72:72 DAR 667:1000], 90k tbn

  I am trying to strip out the first audio stream from the file like so :

  avconv -i file.mp4 -map 0 -map -0:0 -codec copy file-out.mp4
  
  
  
  # OR #
  
  
  
  ffmpeg -i file.mp4 -map 0 -map -0:0 -codec copy file-out.mp4

  The problem is, I get this error :

  Could not write header for output file #0 (incorrect codec parameters ?): Operation not permitted

  So, I checked if something’s wrong with the mp4 file itself :

  avprobe file.mp4
  
  
  
  # OR #
  
  
  
  ffprobe file.mp4

  And the output says :

  Unsupported codec with id 0 for input stream 3
  
  Unsupported codec with id 94213 for input stream 4

  I have no idea what that means. (Apparently something’s wrong with the subtitles, but I got the video from iTunes.)

  1. What’s wrong ?

  2. Can I simply force avconv/ffmpeg to do what I asked of it (i.e. strip the audio stream & copy the rest as it is) ? If so, how ?

  ---

  Apparently I missed the other errors/warnings in the console output before the final error message, like @aergistal suggested :

  [mp4 @ 0x2645420] Codec for stream 0 does not use global headers but container format requires global headers
  
  [mp4 @ 0x2645420] Codec for stream 1 does not use global headers but container format requires global headers
  
  [mp4 @ 0x2645420] Codec for stream 2 does not use global headers but container format requires global headers
  
  [mp4 @ 0x2645420] Codec for stream 3 does not use global headers but container format requires global headers
  
  [mp4 @ 0x2645420] Codec for stream 4 does not use global headers but container format requires global headers
  
  [mp4 @ 0x2645420] track 2: could not find tag, codec not currently supported in container

• how to compile fdk-acc for android on windows7

  20 décembre 2017, par Shuyun6

  I want to compile FFmpeg with fdk-acc, and it’s success in compiling FFmpeg only, but failed in compiling fdk-acc.(windows7+AndroidNDK+MinGW)

  The shell script is :

  NDK_HOME=J:/android-ndk-r14b
  
  ANDROID_API=android-14
  
  SYSROOT=$NDK_HOME/platforms/$ANDROID_API/arch-arm
  
  ANDROID_BIN=$NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/
  
  CROSS_COMPILE=${ANDROID_BIN}/arm-linux-androideabi-
  
  ARM_INC=$SYSROOT/usr/include
  
  ARM_LIB=$SYSROOT/usr/lib
  
  TOOLCHAIN_PREFIX=${NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/arm-linux-androideabi-
  
  LDFLAGS=" -nostdlib -Bdynamic -Wl,--whole-archive -Wl,--no-undefined -Wl,-z,noexecstack  -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so -Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$NDK_HOME/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a -L$NDK_HOME/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/arm-linux-androideabi/lib -L$ARM_LIB  -lc -lgcc -lm -ldl  "
  
  FLAGS="--host=armv7a-linux-androideabi --enable-static --disable-shared"
  
  export CXX="${CROSS_COMPILE}g++ --sysroot=${SYSROOT}"
  
  export LDFLAGS="$LDFLAGS"
  
  export CFLAGS="-O3 -DANDROID -march=armv7-a -mfloat-abi=softfp -mfpu=neon"
  
  export LDFLAGS="-Wl,-dynamic-linker=/system/bin/linker"
  
  export CC="${TOOLCHAIN_PREFIX}gcc --sysroot=${SYSROOT}"
  
  export CXX="${TOOLCHAIN_PREFIX}g++ --sysroot=${SYSROOT}"
  
  export STRIP="${TOOLCHAIN_PREFIX}strip"
  
  export RANLIB="${TOOLCHAIN_PREFIX}ranlib"
  
  export AR="${TOOLCHAIN_PREFIX}ar"
  
  export CC="${CROSS_COMPILE}gcc --sysroot=${SYSROOT}"
  
  PREFIX=C:/ffmpeg-3.4.1/fdk-aac/temp
  
  ./configure $FLAGS \
  
  --prefix=$PREFIX

  I run it by MinGW, like :
  

  I don’t know why it happens and how can I compile successfully ?