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• ffmpeg with frei0r libraries fails on os x 10.14.6

  13 novembre 2019, par Bernhard Wagner

  I’m on Mac OS X 10.14.6 (Mojave), used homebrew to install both ffmpeg and frei0r.
  If you check the output below, the option --enable-frei0r is there.

  I verified the path to the frei0r libaries and call ffmpeg like this :

  FREI0R_PATH=/usr/local/Cellar/frei0r/1.6.1/lib/frei0r-1/ ffmpeg -v debug -i running.mkv -filter:v frei0r=pixeliz0r=0.02:0.02 pixel.mkv

  however it fails the exact same way as if I hadn’t passed the env var FREI0R_PATH :

  FREI0R_PATH=/usr/local/Cellar/frei0r/1.6.1/lib/frei0r-1/ ffmpeg -y -v debug -i running.mkv -filter:v frei0r=pixeliz0r=0.02:0.02 pixel.mkv
  
  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple clang version 11.0.0 (clang-1100.0.33.8)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Splitting the commandline.
  
  Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
  
  Reading option '-v' ... matched as option 'v' (set logging level) with argument 'debug'.
  
  Reading option '-i' ... matched as input url with argument 'running.mkv'.
  
  Reading option '-filter:v' ... matched as option 'filter' (set stream filtergraph) with argument 'frei0r=pixeliz0r=0.02:0.02'.
  
  Reading option 'pixel.mkv' ... matched as output url.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option y (overwrite output files) with argument 1.
  
  Applying option v (set logging level) with argument debug.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url running.mkv.
  
  Successfully parsed a group of options.
  
  Opening an input file: running.mkv.
  
  [NULL @ 0x7f894e002000] Opening 'running.mkv' for reading
  
  [file @ 0x7f894ce20f40] Setting default whitelist 'file,crypto'
  
  [matroska,webm @ 0x7f894e002000] Format matroska,webm probed with size=2048 and score=100
  
  st:0 removing common factor 1000000 from timebase
  
  st:1 removing common factor 1000000 from timebase
  
  [matroska,webm @ 0x7f894e002000] Before avformat_find_stream_info() pos: 1021 bytes read:32768 seeks:0 nb_streams:2
  
  [h264 @ 0x7f894e003400] nal_unit_type: 7(SPS), nal_ref_idc: 3
  
  [h264 @ 0x7f894e003400] nal_unit_type: 8(PPS), nal_ref_idc: 3
  
  [h264 @ 0x7f894e003400] nal_unit_type: 7(SPS), nal_ref_idc: 3
  
  [h264 @ 0x7f894e003400] nal_unit_type: 8(PPS), nal_ref_idc: 3
  
  [h264 @ 0x7f894e003400] nal_unit_type: 5(IDR), nal_ref_idc: 1
  
  [h264 @ 0x7f894e003400] Format yuv420p chosen by get_format().
  
  [h264 @ 0x7f894e003400] Reinit context to 1280x720, pix_fmt: yuv420p
  
  [h264 @ 0x7f894e003400] no picture
  
  [matroska,webm @ 0x7f894e002000] All info found
  
  [matroska,webm @ 0x7f894e002000] After avformat_find_stream_info() pos: 26157 bytes read:32768 seeks:0 frames:5
  
  Input #0, matroska,webm, from 'running.mkv':
  
    Metadata:
  
      MINOR_VERSION   : 0
  
      COMPATIBLE_BRANDS: iso6avc1mp41
  
      MAJOR_BRAND     : dash
  
      ENCODER         : Lavf58.29.100
  
    Duration: 00:00:46.22, start: -0.013000, bitrate: 2189 kb/s
  
      Stream #0:0, 3, 1/1000: Video: h264 (Main), 1 reference frame, yuv420p(tv, bt709, progressive, left), 1280x720 [SAR 1:1 DAR 16:9], 0/1, 60 fps, 60 tbr, 1k tbn, 120 tbc (default)
  
      Metadata:
  
        HANDLER_NAME    : ISO Media file produced by Google Inc.
  
        DURATION        : 00:00:46.216000000
  
      Stream #0:1(eng), 2, 1/1000: Audio: opus, 48000 Hz, stereo, fltp, delay 312 (default)
  
      Metadata:
  
        DURATION        : 00:00:46.194000000
  
  Successfully opened the file.
  
  Parsing a group of options: output url pixel.mkv.
  
  Applying option filter:v (set stream filtergraph) with argument frei0r=pixeliz0r=0.02:0.02.
  
  Successfully parsed a group of options.
  
  Opening an output file: pixel.mkv.
  
  [file @ 0x7f894ce22840] Setting default whitelist 'file,crypto'
  
  Successfully opened the file.
  
  detected 4 logical cores
  
  [h264 @ 0x7f894d006a00] nal_unit_type: 7(SPS), nal_ref_idc: 3
  
  [h264 @ 0x7f894d006a00] nal_unit_type: 8(PPS), nal_ref_idc: 3
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (opus (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
      Last message repeated 1 times
  
  [opus @ 0x7f894d020000] skip 312/960 samples
  
  [h264 @ 0x7f894d006a00] nal_unit_type: 5(IDR), nal_ref_idc: 1
  
  [h264 @ 0x7f894d006a00] Format yuv420p chosen by get_format().
  
  [h264 @ 0x7f894d006a00] Reinit context to 1280x720, pix_fmt: yuv420p
  
  [graph_1_in_0_1 @ 0x7f894ce3f740] Setting 'time_base' to value '1/48000'
  
  [graph_1_in_0_1 @ 0x7f894ce3f740] Setting 'sample_rate' to value '48000'
  
  [h264 @ 0x7f894d006a00] no picture
  
  [graph_1_in_0_1 @ 0x7f894ce3f740] Setting 'sample_fmt' to value 'fltp'
  
  [graph_1_in_0_1 @ 0x7f894ce3f740] Setting 'channel_layout' to value '0x3'
  
  [graph_1_in_0_1 @ 0x7f894ce3f740] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
  
  [format_out_0_1 @ 0x7f894ce3fdc0] Setting 'sample_fmts' to value 'fltp'
  
  [AVFilterGraph @ 0x7f894cc07180] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
      Last message repeated 2 times
  
  [h264 @ 0x7f894d007000] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x7f894e030800] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x7f894e030e00] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
      Last message repeated 1 times
  
  [h264 @ 0x7f894e017c00] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
  
  [h264 @ 0x7f894d006a00] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 1
  
  [Parsed_frei0r_0 @ 0x7f894ce4fe40] Setting 'pixeliz0r' to value '0.02'
  
  [Parsed_frei0r_0 @ 0x7f894ce4fe40] Option 'pixeliz0r' not found
  
  [AVFilterGraph @ 0x7f894cc08340] Error initializing filter 'frei0r' with args 'pixeliz0r=0.02:0.02'
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Option not found
  
  Error while processing the decoded data for stream #0:0
  
  [AVIOContext @ 0x7f894cc06400] Statistics: 0 seeks, 0 writeouts
  
  [libvorbis @ 0x7f894d800c00] 44 frames left in the queue on closing
  
  [AVIOContext @ 0x7f894ce21080] Statistics: 65536 bytes read, 0 seeks
  
  Conversion failed!

• so Confused, why my build of libffmpeg.so > 17M ?

  24 février 2012, par ghost

  I did build ffmpeg for Android in winxp and scientific linux , ffmpeg is in dolphin player — an open source video player (http://code.google.com/p/dolphin-player/), and i just build the ffmpeg, its seems like the same as in rockplayer 1.7.0, they all use build_andriod.sh below， it worked in both winxp and linux,
  and all successfully got bin/ffmpeg (less than 5MB), but libffmpeg.so ( > 17MB)， when put libffmpeg.so in dolphin-player libs , player can't work, the size 17MB is too large, the original libffmpeg.so in olphin-player libs is less than 5MB, please give some advice.

  #!/bin/bash
  
  
  
  ######################################################
  
  # FFmpeg builds script for Android+ARM platform
  
  #
  
  # This script is released under term of 
  
  #   CDDL (http://www.opensource.org/licenses/cddl1) 
  
  # Wrote by pinxue (~@gmail.com) from RockPlayer.com
  
  #                                   2010-8 ~ 2011-4
  
  ######################################################
  
  
  
  ######################################################
  
  # Usage:
  
  #   put this script in top of FFmpeg source tree
  
  #   ./build_android
  
  #
  
  # It generates binary for following architectures:
  
  #     ARMv6 
  
  #     ARMv6+VFP 
  
  #     ARMv7+VFM-ïd16 (Tegra2) 
  
  #     ARMv7+Neon (Cortex-A8)
  
  #
  
  # Customizing:
  
  # 1. Feel free to change ./configure parameters for more features
  
  # 2. To adapt other ARM variants
  
  #       set $CPU and $OPTIMIZE_CFLAGS 
  
  #       call build_one
  
  ######################################################
  
  
  
  export TMPDIR=D:/tmp/android
  
  export NDK=D:/android-ndk-r4
  
  
  
  #PLATFORM=$NDK/build/platforms/android-8/arch-arm/
  
  PLATFORM=$NDK/build/platforms/android-8/arch-arm
  
  #PREBUILT=$NDK/build/prebuilt/darwin-x86/arm-eabi-4.4.0
  
  PREBUILT=$NDK/build/prebuilt/windows/arm-eabi-4.4.0
  
  
  
  function build_one
  
  {
  
  
  
  # -fasm : required. Android header file uses asm keyword instead of __asm__ , but most of c dialect (like ansi,c99,gnu99) implies -fno-asm.
  
  #   ~/android/android-ndk-r4/build/platforms/android-5/arch-arm//usr/include/asm/byteorder.h: In function '___arch__swab32':
  
  #   ~/android/android-ndk-r4/build/platforms/android-5/arch-arm//usr/include/asm/byteorder.h:25: error: expected ')' before ':' token
  
  
  
  # -fno-short-enums : optimized.  Else FFmpeg obj will generate a huge number of warning for variable-size enums, 
  
  #   though we may suppress them by --no-enum-size-warning, it would be better to avoid it.
  
  #   .../ld: warning: cmdutils.o uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail
  
  
  
  # --extra-libs="-lgcc" : required. Else cannot solve some runtime function symbols
  
  #   ... undefined reference to `__aeabi_f2uiz'
  
  
  
  # --enable-protocols : required. Without this option, the file open always fails mysteriously.
  
  #   FFmpeg's av_open_input_file will invoke file format probing functions, but because most of useful demuxers has flag of zero 
  
  #   which cause them are ignored during file format probling and fall to url stream parsing,
  
  #   if protocols are disabled, the file:// url cannot be opened as well.
  
  
  
  # $PREBUILT/bin/arm-eabi-ar d libavcodec/libavcodec.a inverse.o : required.
  
  #   FFmpeg includes two copies of inverse.c both in libavutil and libavcodec for performance consideration (not sure the benifit yet)
  
  #   Without this step, final ld of generating libffmpeg.so will fail silently, if invoke ld through gcc, gcc will collect more reasonable error message.
  
  
  
  # -llog: debug only, FFmpeg itself doesn't require it at all.
  
  #   With this option, we may simply includes "utils/Log.h" and use LOGx() to observe FFmpeg's behavior
  
  #   PS, it seems the toolchain implies -DNDEBUG somewhere, it would be safer to use following syntax
  
  #    #ifdef NDEBUG
  
  #        #undef NDEBUG
  
  #        #define HAVE_NDEBUG
  
  #    #endif
  
  #    #include "utils/Log.h"
  
  #    #ifdef HAVE_NDEBUG
  
  #        #define NDEBUG
  
  #        #undef HAVE_NDEBUG
  
  #    #endif
  
  
  
  # --whole-archive : required. Else ld generate a small .so file (about 15k)
  
  
  
  # --no-stdlib : required. Android doesn't use standard c runtime but invited its own wheal (bionic libc) because of license consideration.
  
  
  
  # space before \ of configure lines: required for some options. Else next line will be merged into previous lines's content and cause problem.
  
  #   Especially the --extra-cflags, the next line will pass to gcc in this case and configure will say gcc cannot create executable.
  
  
  
  # many options mentioned by articles over internet are implied by -O2 or -O3 already, need not repeat at all.
  
  
  
  # two or three common optimization cflags are omitted because not sure about the trade off yet. invoke NDK build system with V=1 to find them.
  
  
  
  # -Wl,-T,$PREBUILT/arm-eabi/lib/ldscripts/armelf.x mentioned by almost every articles over internet, but it is not required to specify at all.
  
  
  
  # -Dipv6mr_interface=ipv6mr_ifindex : required. Android inet header doesn't use ipv6mr_interface which is required by rfc, seems it generate this user space header file directly from kernel header file, but Linux kernel has decided to keep its own name for ever and ask user space header to use rfc name.
  
  
  
  # HAVE_SYS_UIO_H : required. Else:
  
  # In file included from ~/android/android-ndk-r4/build/platforms/android-5/arch-arm//usr/include/linux/socket.h:29,
  
  #                 from ~/android/android-ndk-r4/build/platforms/android-5/arch-arm//usr/include/sys/socket.h:33,
  
  #                 from libavformat/network.h:35,
  
  #                 from libavformat/utils.c:46:
  
  #~/android/android-ndk-r4/build/platforms/android-5/arch-arm//usr/include/linux/uio.h:19: error: redefinition of 'struct iovec'
  
  #
  
  
  
  # --disable-doc : required because of strange bug of toolchain.
  
  #
  
  
  
  #
  
  #--extra-ldflags=-Wl,-T,$PREBUILT/arm-eabi/lib/ldscripts/armelf.x -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib $PREBUILT/lib/gcc/arm-eabi/4.4.0/crtbegin.o $PREBUILT/lib/gcc/arm-eabi/4.4.0/crtend.o -lc -lm -ldl"
  
  #
  
  
  
  ./configure --target-os=linux \
  
      --prefix=$PREFIX \
  
      --enable-cross-compile \
  
      --extra-libs="-lgcc" \
  
      --arch=arm \
  
      --cc=$PREBUILT/bin/arm-eabi-gcc \
  
      --cross-prefix=$PREBUILT/bin/arm-eabi- \
  
      --nm=$PREBUILT/bin/arm-eabi-nm \
  
      --sysroot=$PLATFORM \
  
     --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
  
      --disable-shared \
  
      --enable-static \
  
      --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -nostdlib -lc -lm -ldl -llog" \
  
      --enable-parsers \
  
      --disable-encoders  \
  
      --enable-decoders \
  
      --disable-muxers \
  
      --enable-demuxers \
  
      --enable-swscale  \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --disable-ffserver \
  
      --enable-network \
  
      --enable-indevs \
  
      --disable-bsfs \
  
      --disable-filters \
  
      --enable-protocols  \
  
      --enable-asm \
  
      --disable-doc \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  ##make clean
  
  make  -j4 install
  
  
  
  
  
  $PREBUILT/bin/arm-eabi-ar d libavcodec/libavcodec.a inverse.o
  
  
  
  $PREBUILT/bin/arm-eabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavformat/libavformat.a libavutil/libavutil.a  -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-eabi/4.4.0/libgcc.a
  
  
  
  }
  
  
  
  
  
  #arm v6
  
  CPU=armv6
  
  OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  PREFIX=./android/$CPU 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7vfpv3
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
  
  PREFIX=./android/$CPU 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7vfp
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
  
  PREFIX=./android/$CPU-vfp
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7n
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
  
  PREFIX=./android/$CPU-neon 
  
  ADDITIONAL_CONFIGURE_FLAG=--enable-neon
  
  build_one
  
  
  
  #arm v6+vfp
  
  CPU=armv6
  
  OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
  
  PREFIX=./android/${CPU}_vfp 
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one

• Video concatenation puts sound out of sync

  9 août 2019, par mmorin

  (Cross-posted from Video Production, where the question received no answers and may be more technical than usual video production.)

  I have several MOV files from a DSLR camera. I concatenate them with directions from this thread :

  ffmpeg -safe 0 -f concat -i files_to_combine -vcodec copy -acodec copy temp.MOV

  where files_to_combine is :

  file ./DSC_0013.MOV
  
  ...
  
  file ./DSC_0019.MOV

  The result has image and sound in sync for the first clip and is out of sync by fractions of a second in the second clip, and out of sync by around a second for the last clip. It is probably related to this error from the log :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] st: 0 edit list: 1 Missing key frame while searching for timestamp: 1000
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] st: 0 edit list 1 Cannot find an index entry before timestamp: 1000.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] Auto-inserting h264_mp4toannexb bitstream filter

  How can I trim the frames to the available sound stream, then concatenate the two videos ?

  The full log from the ffmpeg command is :

  ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dc00e000] Auto-inserting h264_mp4toannexb bitstream filter
  
  Input #0, concat, from 'files_to_combine':
  
    Duration: N/A, start: -0.592000, bitrate: 36888 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m/bt709/bt470m), 1920x1080, 35352 kb/s, 50 fps, 50 tbr, 50k tbn, 100 tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Output #0, mov, to 'temp.MOV':
  
    Metadata:
  
      encoder         : Lavf58.20.100
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m/bt709/bt470m), 1920x1080, q=2-31, 35352 kb/s, 50 fps, 50 tbr, 50k tbn, 50k tbc
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] st: 0 edit list: 1 Missing key frame while searching for timestamp: 1000
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] st: 0 edit list 1 Cannot find an index entry before timestamp: 1000.
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f82dd802200] Auto-inserting h264_mp4toannexb bitstream filter
  
  frame=41886 fps=547 q=-1.0 Lsize= 3789826kB time=00:13:58.75 bitrate=37014.8kbits/s speed=10.9x    
  
  video:3631879kB audio:157123kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.021759%

  Update (1 July 2019)

  I thought that the files had a problem at the beginning or at the end, so I
  trimmed one second from each end, but it still had the sound out of sync :

  FILES=files_to_combine
  
  OUTPUT=show2.MOV
  
  rm $FILES
  
  for i in 3 4 5 6 7 8 9; do
  
      rm ${i}.MOV
  
      duration=$(ffprobe -v 0 -show_entries format=duration -of compact=p=0:nk=1  DSC_001${i}.MOV)
  
      trimmed=$(echo $duration - 1 | bc)
  
      ffmpeg -ss 1 -t $trimmed -i DSC_001${i}.MOV -vcodec copy -acodec copy ${i}.MOV
  
      echo file ./${i}.MOV >> $FILES
  
  done
  
  
  
  rm $OUTPUT
  
  ffmpeg -safe 0 -f concat -i $FILES -vcodec copy -acodec copy $OUTPUT

  When I trim a single file near the end, the sound and video do not seem out of sync :

  ffmpeg -ss 00:09:20 -t 20 -i DSC_0014.MOV -vcodec copy -acodec copy end.MOV

  When I concatenate only 30 seconds from each video, the result seems OK :

  FILES=files_to_combine
  
  OUTPUT=show2.MOV
  
  rm $FILES
  
  for i in 3 4 5 6 7 8 9; do
  
      rm ${i}.MOV
  
      duration=$(ffprobe -v 0 -show_entries format=duration -of compact=p=0:nk=1  DSC_001${i}.MOV)
  
      start=$(echo $duration - 30 | bc)
  
      end=$(echo $duration - 1 | bc)
  
      ffmpeg -ss $start -t $end -i DSC_001${i}.MOV -vcodec copy -acodec copy ${i}.MOV
  
      echo file ./${i}.MOV >> $FILES
  
  done
  
  
  
  rm $OUTPUT
  
  ffmpeg -safe 0 -f concat -i $FILES -vcodec copy -acodec copy $OUTPUT

  This last concatenation gives this error multiple times :

  [mov @ 0x7fc3c7837400] Non-monotonous DTS in output stream 0:0; previous: 9080205, current: 9080200; changing to 9080206. This may result in incorrect timestamps in the output file.

  So I am guessing that the problem is small differences in timestamps that
  accumulate and become more noticeable with longer durations and the
  concatenation of multiple files.

  For reference, the DSLR that shot these clips is a Nikon D3300 and the result
  of ffprobe on one of the files is :

  $ ffprobe DSC_0017.MOV -hide_banner
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fab70003800] st: 0 edit list: 1 Missing key frame while searching for timestamp: 1000
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fab70003800] st: 0 edit list 1 Cannot find an index entry before timestamp: 1000.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'DSC_0017.MOV':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537331968
  
      compatible_brands: qt  niko
  
      creation_time   : 2019-06-12T23:52:37.000000Z
  
    Duration: 00:09:53.58, start: 0.000000, bitrate: 36843 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m/bt709/bt470m), 1920x1080, 35300 kb/s, 50 fps, 50 tbr, 50k tbn, 100 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-06-12T23:52:37.000000Z
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-06-12T23:52:37.000000Z

  Update (9 August 2019)

  I concatenated the files in iMovie and the sound and image are not as out of sync as with FFMPEG. Maybe iMovie aligns the timestamps at the end of each clip instead of concatenating the audio and image streams separately.

  I ran the concatenation again with the latest ffmpeg 4.1.4_1 on these files and others from the same camera. The audio and image are in sync in one case (the results lasts 46 minutes) out of sync in another (the result lasts 48 minutes).