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• How to build the Exoplayer ffmpeg extension with the GSM codec ?

  4 mars 2020, par MadCoconut

  I wanted to use Exoplayer to play an audio file but when I tried I got this exception :

  2019-12-13 10:08:14.827 28972-29388/com.XXX.XXX E/ExoPlayerImplInternal: Source error.
  
      com.google.android.exoplayer2.ParserException: Expected block alignment: 0; got: 65
  
          at com.google.android.exoplayer2.extractor.wav.WavHeaderReader.peek(WavHeaderReader.java:81)
  
          at com.google.android.exoplayer2.extractor.wav.WavExtractor.sniff(WavExtractor.java:50)
  
          at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractorHolder.selectExtractor(ProgressiveMediaPeriod.java:1061)
  
          at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:952)
  
          at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:394)
  
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
  
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
  
          at java.lang.Thread.run(Thread.java:764)

  The audio files I have to play are wav files (GSM_MS, 13kb/s)

  I tried to build the the Exoplayer Ffmpeg extension following the tutorial :
  https://github.com/google/ExoPlayer/tree/release-v2/extensions/ffmpeg

  I cloned the Exoplayer repository and I downloaded the Android NDK version r20b.

  I modified the build script build_ffmpeg.sh to enable the libgsm :

  COMMON_OPTIONS=“
  
  …
  
     —enable-libgsm
  
  "

  I defined the required environment variables :

  • FFMPEG_EXT_PATH=“/extensions/ffmpeg/src/main/jni”
  • NDK_PATH="/Users/USER/Documents/Android/android-ndk-r20b/"
  • HOST_PLATFORM(“darwin-x86_64”)
  • ENABLED_DECODERS(all the decoders available https://exoplayer.dev/supported-formats.html#ffmpeg-extension)

  Then I built the library using the provided command line :

  cd "${FFMPEG_EXT_PATH}" && \
  
  ./build_ffmpeg.sh \
  
   "${FFMPEG_EXT_PATH}" "${NDK_PATH}" "${HOST_PLATFORM}" "${ENABLED_DECODERS[@]}"

  But something goes wrong during the build process :

  remote: Enumerating objects: 38, done.
  
  remote: Counting objects: 100% (38/38), done.
  
  remote: Compressing objects: 100% (26/26), done.
  
  remote: Total 26 (delta 20), reused 0 (delta 0)
  
  Unpacking objects: 100% (26/26), done.
  
  From git://source.ffmpeg.org/ffmpeg
  
    377a095dc3..bd83191271  master     -> origin/master
  
  Already up to date.
  
  Already on 'release/4.2'
  
  Your branch is up to date with 'origin/release/4.2'.
  
  ERROR: libgsm not found
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "ffbuild/config.log" produced by configure as this will help
  
  solve the problem.
  
  GEN libavutil/libavutil.version
  
  GEN libswresample/libswresample.version
  
  GEN libavresample/libavresample.version
  
  GEN libavcodec/libavcodec.version
  
  CC  libavcodec/aac_ac3_parser.o
  
  CC  libavcodec/aacdec.o
  
  CC  libavcodec/aacps_float.o
  
  CC  libavcodec/aacpsdsp_float.o
  
  CC  libavcodec/aacsbr.o
  
  CC  libavcodec/aactab.o
  
  CC  libavcodec/ac3.o
  
  CC  libavcodec/ac3_parser.o
  
  CC  libavcodec/ac3dec_data.o
  
  CC  libavcodec/ac3dec_float.o

  Here is a part of the content of the config.log file located in the ffmpeg checked out library (/extensions/ffmpeg/src/main/jni/ffmpeg/ffbuild/config.log :

  …
  
  /Users/USER/Documents/Android/android-ndk-r20b/toolchains/llvm/prebuilt/darwin-x86_64/bin/i686-linux-android16-clang -march=i686 -Wl,--as-needed -Wl,-z,noexecstack -pie -fPIE -pie -o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o
  
  /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o:test.c:function foo: error: undefined reference to 'cexp'
  
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  
  check_lib libgsm gsm.h gsm_create -lgsm
  
  check_func_headers gsm.h gsm_create -lgsm
  
  test_ld cc -lgsm
  
  test_cc
  
  BEGIN /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
  
      1   #include 
  
      2   #include 
  
      3   long check_gsm_create(void) { return (long) gsm_create; }
  
      4   int main(void) { int ret = 0;
  
      5    ret |= ((intptr_t)check_gsm_create) & 0xFFFF;
  
      6   return ret; }
  
  END /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
  
  /Users/USER/Documents/Android/android-ndk-r20b/toolchains/llvm/prebuilt/darwin-x86_64/bin/i686-linux-android16-clang -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -march=i686 -std=c11 -fPIE -fomit-frame-pointer -fPIC -pthread -c -o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.o /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c
  
  /var/folders/9l/trkjpc091_79vk3krfpykbsh0000gn/T//ffconf.hv2yROG1/test.c:1:10: fatal error: 'gsm.h' file not found
  
  …

  The gsm.h file is located there : /extensions/ffmpeg/src/main/jni/ffmpeg/libavcodec

  I assume this path has been configured to be used by the build script.

  Any help is much appreciated.

• FFMPEG on PHP could not open file

  15 juillet 2021, par albert

  Currently, I'm running the latest FFMPEG (4.2.1) on MacOS Catalina.
I'm trying to join multiple image to become an mp4 video using FFMPEG executed with PHP exec()

  



  here is my ffmpeg code

  



  "/usr/local/bin/ffmpeg -filter_complex \"[0]reverse[r];[0][r]concat, loop=1:50, setpts=N/12/TB\" -r 25 -f image2 -i /Users/Dan/Desktop/RAW/0234_%02d.jpg -preset fast -crf 23 -profile:v baseline -movflags +faststart -pix_fmt yuv420p /Applications/XAMPP/htdocs/render/result/result.mp4 2>&1"


  



  Here is the output of FFMPEG

  



   Array (
     [0] => ffmpeg version 4.2.1-tessus  https://evermeet.cx/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
     [1] =>   built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
     [2] =>   configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay
     [3] =>   libavutil      56. 31.100 / 56. 31.100
     [4] =>   libavcodec     58. 54.100 / 58. 54.100
     [5] =>   libavformat    58. 29.100 / 58. 29.100
     [6] =>   libavdevice    58.  8.100 / 58.  8.100
     [7] =>   libavfilter     7. 57.100 /  7. 57.100
     [8] =>   libswscale      5.  5.100 /  5.  5.100
     [9] =>   libswresample   3.  5.100 /  3.  5.100
     [10] =>   libpostproc    55.  5.100 / 55.  5.100
     [11] => [image2 @ 0x7fe4b1000400] Could not open file : /Users/Dan/Desktop/RAW/0234_01.jpg
     [12] => [image2 @ 0x7fe4b1000400] Could not find codec parameters for stream 0 (Video: mjpeg, none(bt470bg/unknown/unknown)):
 unspecified size
     [13] => Consider increasing the value for the 'analyzeduration' and 'probesize' options
     [14] => Input #0, image2, from '/Users/Dan/Desktop/RAW/0234_%02d.jpg':
     [15] =>   Duration: 00:00:00.20, start: 0.000000, bitrate: N/A
     [16] =>     Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 25 tbr, 25 tbn, 25 tbc
     [17] => Stream mapping:
     [18] =>   Stream #0:0 (mjpeg) -> reverse
     [19] =>   Stream #0:0 (mjpeg) -> concat:in0:v0
     [20] =>   setpts -> Stream #0:0 (libx264)
     [21] => Press [q] to stop, [?] for help
     [22] => [image2 @ 0x7fe4b1000400] Could not open file : /Users/Dan/Desktop/RAW/0234_01.jpg
     [23] => /Users/Dan/Desktop/RAW/0234_%02d.jpg: Input/output error
     [24] => Cannot determine format of input stream 0:0 after EOF
     [25] => Error marking filters as finished
     [26] => Conversion failed!
 )


  



  On the 11th row, ffmpeg could not open the file, although the file permission already read and write for everyone.
Is it something I missed for the ffmpeg code ?

  



  Note : The ffmpeg code above can be run on terminal successfully

  


• ffmpeg : capture rtsp stream continously without stoping

  21 décembre 2019, par Santhosh Yedidi

  I am trying to capture an rtsp stream

  ffmpeg -rtsp_transport tcp -i "rtsp://...." -acodec copy -vcodec copy file.ts

  But this will only record for few seconds and stop

  ffmpeg version n4.1.2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 8.2.1 (GCC) 20181127
  
    configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
  
    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
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
    libpostproc    55.  3.100 / 55.  3.100
  
  [rtsp @ 0x564a002b4e80] max delay reached. need to consume packet
  
  [rtsp @ 0x564a002b4e80] RTP: missed 3 packets
  
  [h264 @ 0x564a002b8a80] out of range intra chroma pred mode
  
  [h264 @ 0x564a002b8a80] error while decoding MB 8 43
  
  [h264 @ 0x564a002b8a80] concealing 1401 DC, 1401 AC, 1401 MV errors in I frame
  
  Input #0, rtsp, from 'rtsp://...':
  
    Metadata:
  
      title           : RTSP Session/2.0
  
    Duration: N/A, start: 0.463333, bitrate: N/A
  
      Stream #0:0: Video: h264 (Main), yuvj420p(pc, progressive), 1280x960, 15 fps, 100 tbr, 90k tbn, 30 tbc
  
  Output #0, mpegts, to 'file.ts':
  
    Metadata:
  
      title           : RTSP Session/2.0
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (Main), yuvj420p(pc, progressive), 1280x960, q=2-31, 15 fps, 100 tbr, 90k tbn, 90k tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=  380 fps= 16 q=-1.0 Lsize=    6962kB time=00:00:24.86 bitrate=2293.5kbits/s speed=1.06x    
  
  video:6416kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.512586%

  How to keep the recording continous