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• Use ffmpeg to stream live content to azure media services

  19 mars 2018, par Dadicool

  I’ve been trying to stream content to azure media services using ffmpeg as it’s one of the options described here : http://azure.microsoft.com/blog/2014/09/18/azure-media-services-rtmp-support-and-live-encoders/

  My command is :

  ffmpeg -v verbose -i 300.mp4 -strict -2 -c:a aac -b:a 128k -ar 44100 -r 30 -g 60 -keyint_min 60 -b:v 400000 -c:v libx264 -preset medium -bufsize 400k -maxrate 400k -f flv rtmp://nessma-****.channel.mediaservices.windows.net:1935/live/584c99f5c47f424d9e83ac95364331e7

  I have made sure that the streaming endpoint has one active streaming unit, I also made sure that the channel is actually Ready and I even get it to start streaming (which makes a PublishURL available).

  When I execute the ffmpeg command to start streaming, I keep getting the following error :

  ffmpeg version 2.5.2 Copyright (c) 2000-2014 the FFmpeg developers
 built on Dec 30 2014 11:31:18 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
 configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --arch=x86_64 --enable-runtime-cpudetect
 libavutil      54. 15.100 / 54. 15.100
 libavcodec     56. 13.100 / 56. 13.100
 libavformat    56. 15.102 / 56. 15.102
 libavdevice    56.  3.100 / 56.  3.100
 libavfilter     5.  2.103 /  5.  2.103
 libswscale      3.  1.101 /  3.  1.101
 libswresample   1.  1.100 /  1.  1.100
 libpostproc    53.  3.100 / 53.  3.100
Routing option strict to both codec and muxer layer
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] overread end of atom 'colr' by 1 bytes
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] stream 0, timescale not set
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f9a0a002c00] max_analyze_duration 5000000 reached at 5003637 microseconds
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '300.mp4':
 Metadata:
   major_brand     : mp42
   minor_version   : 0
   compatible_brands: mp42isomavc1
   creation_time   : 2014-01-11 05:39:32
   genre           : Trailer
   artist          : Warner Bros.
   title           : 300: Rise of an Empire - Trailer 2
   encoder         : HandBrake 0.9.9 2013051800
   date            : 2014
 Duration: 00:02:33.24, start: 0.000000, bitrate: 7377 kb/s
   Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 (1920x1088), 7219 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)
   Metadata:
     creation_time   : 2014-01-11 05:39:32
     encoder         : JVT/AVC Coding
   Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 157 kb/s (default)
   Metadata:
     creation_time   : 2014-01-11 05:39:32
   Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 101x150 [SAR 72:72 DAR 101:150], 90k tbr, 90k tbn, 90k tbc
rtmp://nessma-****.channel.mediaservices.windows.net:1935/live/584c99f5c47f424d9e83ac95364331e7: Input/output error

  The Azure blog post clearly states that this should be possible but I can’t find a working example anywhere.

  Environment :

  • MacOS Maverick
  • FFMPEG installed from official build
  • 300.mp4 : 1080p trailer of the latest 300 movie

• Build ffmpeg on Android. Using NEON (Tegra3) and Cygwin

  22 août 2012, par intox2001

  I have some issues building ffmpeg for Android using NEON instructions (for Tegra3).
  I am able to create the libffmpeg.so WITHOUT the optmization : -mfpu=neon

  I am using lastest ffmpeg 0.11.1 with Cygwin on Windows.

  Please find below the build.sh file i'm using (found on the web and tweaked)

  #!/bin/bash
  
  export TMPDIR=C:/Arnaud/Private/Android/temp
  
  NDK=C:/Arnaud/Private/Android/android-ndk-r8b
  
  ###Path for Android 8
  
  PLATFORM=$NDK/platforms/android-8/arch-arm/
  
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows
  
  
  
  function build_one
  
  {
  
  ./configure --target-os=linux \
  
      --prefix=$PREFIX \
  
      --enable-cross-compile \
  
      --extra-libs="-lgcc" \
  
      --enable-asm \
  
      --enable-neon \
  
      --arch=armv7 \
  
      --cpu=cortex-a8 \
  
      --enable-memalign-hack \
  
      --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
      --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
      --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
      --sysroot=$PLATFORM \
  
      --extra-cflags="$OPTIMIZE_CFLAGS" \
  
      --disable-shared \
  
      --enable-memalign-hack \
  
      --enable-static \
  
      --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
  
      --disable-everything \
  
      --enable-demuxer=mov \
  
      --enable-demuxer=h264 \
  
      --disable-ffplay \
  
      --enable-protocols \
  
      --enable-avformat \
  
      --enable-avcodec \
  
      --enable-decoder=rawvideo \
  
      --enable-decoder=mjpeg \
  
      --enable-decoder=h263 \
  
      --enable-decoder=mpeg4 \
  
      --enable-decoder=h264 \
  
      --enable-parser=h264 \
  
      --disable-network \
  
      --enable-zlib \
  
      --disable-avfilter \
  
      --disable-avdevice \
  
  $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  sed -i 's/HAVE_LRINT 0/HAVE_LRINT 1/g' config.h
  
  sed -i 's/HAVE_LRINTF 0/HAVE_LRINTF 1/g' config.h
  
  sed -i 's/HAVE_ROUND 0/HAVE_ROUND 1/g' config.h
  
  sed -i 's/HAVE_ROUNDF 0/HAVE_ROUNDF 1/g' config.h
  
  sed -i 's/HAVE_TRUNC 0/HAVE_TRUNC 1/g' config.h
  
  sed -i 's/HAVE_TRUNCF 0/HAVE_TRUNCF 1/g' config.h
  
  
  
  make clean
  
  make  -j4 install
  
  
  
  #Old Prebuilt (R8)
  
  $PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
  
  $PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$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 libswscale/libswscale.a -lc -lm -lz -ldl -llog  --warn-once  --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/libgcc.a
  
  }
  
  
  
  #arm v7n
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS='-I$PLATFORM/usr/include -mfpu=neon -mfloat-abi=softfp -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300'
  
  PREFIX=./android/$CPU 
  
  build_one

  With this option, on optimize_cflags, -mfpu=neon, the build fails with those errors :

  CP ffprobe
  STRIP ffprobe
  INSTALL install-progs-yes
  INSTALL ffprobe
  libavcodec/libavcodec.a(fft_fixed_init_arm.o) : In function

  ff_fft_fixed_init_arm':
C:\Arnaud\Private\Android\DVBStream\jni\ffmpeg-0.11.1/libavcodec/arm/fft_fixed_init_arm.c:36: undefined reference to

  ff_fft_fixed_calc_neon'
  libavcodec/libavcodec.a(fft_init_arm.o) : In function

  ff_fft_init_arm':
C:\Arnaud\Private\Android\DVBStream\jni\ffmpeg-0.11.1/libavcodec/arm/fft_init_arm.c:47: undefined reference to

  ff_fft_permute_neon'
  C :\Arnaud\Private\Android\DVBStream\jni\ffmpeg-0.11.1/libavcodec/arm/fft_init_arm.c:47 : undefined reference to `ff_fft_calc_neon'

  Seems that some dependencies are missing / not set. Do you have any clue what's happening / how to build with neon ?

• Merging two mp4 files

  2 janvier 2021, par Michael Hofmann

  I have two mp4 files. One contains the audio and the other one the video. Now I want to merge them using python.

  


  input_video = ffmpeg.input(application_path+"/tmp/video.mp4")
input_audio = ffmpeg.input(application_path+"/tmp/audio.mp4")
ffmpeg.concat(input_video, input_audio, v=1, a=1).output(application_path+"/fused.mp4").run()


  


  I get a FileNotFoundError: [WinError 2] The system cannot find the file specified in the third line. I have no clue what I am doing wrong. I tried it with ffmpeg.concat(input_video, input_audio, v=1, a=1).output(application_path+).run() and got the same error.

  


  I do not have to stick to ffmpeg, but a command-line solution isn't going to work for me, because it will run on other PCs.

  


  Edit :
Full Error Message

  


  File "c:\YouTubeDownloader\YouTubeDownloader.py", line 97, in <module>&#xA;    ffmpeg.concat(input_video, input_audio, v=1, a=1).output(os.path.join(application_path, "fused.mp4")).run()&#xA;  File "C:\Users\Michael Hofmann\AppData\Local\Programs\Python\Python39\lib\site-packages\ffmpeg\_run.py", line 313, in run&#xA;    process = run_async(&#xA;  File "C:\Users\Michael Hofmann\AppData\Local\Programs\Python\Python39\lib\site-packages\ffmpeg\_run.py", line 284, in run_async&#xA;    return subprocess.Popen(&#xA;  File "C:\Users\Michael Hofmann\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 947, in __init__&#xA;    self._execute_child(args, executable, preexec_fn, close_fds,&#xA;  File "C:\Users\Michael Hofmann\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 1416, in _execute_child&#xA;    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,&#xA;FileNotFoundError: [WinError 2] Das System kann die angegebene Datei nicht finden&#xA;</module>