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• ffmpeg-Error splitting the argument list : Option not found

  1er mars 2017, par Stranger

  I am trying to execute below command using ffmpeg-android-java

  -i /storage/sdcard0/WhatsApp/Media/WhatsApp Video/VID-20170228-WA0000.mp4 -ss 180 -t 292 -strict -2 -async 1 /storage/sdcard0/Movies/cropper_video_1.mp4

  I am getting below failure message-

  FAILED with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.8 (GCC) configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags= libavutil 55. 17.103 / 55. 17.103 libavcodec 57. 24.102 / 57. 24.102 libavformat 57. 25.100 / 57. 25.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 31.100 / 6. 31.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 Unrecognized option 'i /storage/sdcard0/WhatsApp/Media/WhatsApp Video/VID-20170228-WA0000.mp4 -ss 180 -t 292 -strict -2 -async 1 /storage/sdcard0/Movies/cropper_video_1.mp4'. Error splitting the argument list: Option not found

  Why am i getting this error and how can i resolve it?

• How to retain format in conversion by FFmpeg ?

  1er mars 2017, par jarno

  Suppose the input file does not have filename extension. FFmpeg detects input file format, but how to use the same format for output file automatically?

• how to extract EPG from dvb-t (live tv stream - udp) with ffmpeg ?

  1er mars 2017, par Amir Moradabadi

  I want to extract EPG from dvb-t (live tv stream - udp) with ffmpeg. I have a dvb-t device and receiving streams with udp.

• Android - Add text or image while recording video ?

  1er mars 2017, par LuongTruong

  I am struggling with recording and editing videos. For editing, I found a useful library in Android named ffmpeg4Android. However, I am still get stuck in recording video. Here is what I want:

  1/ Add text or images in video while recording
  2/ Add filter while recording video
  

  I found there is a library GPUImage for Android but it has only some examples related to taking a photo, not to recording video)

  Please let me know if you have any ways or any suggested libraries which can do it.

  Thank you in advance!

  Links which I read when researching:
  Add overlay while record video on Android
  How to Record video with GPUImage?
  FFMpeg add text to actual video file after recording in Android
  

• How to detect the silence at the end of an audio file ?

  1er mars 2017, par Ali Akber

  I am trying to detect silence at the end of an audio file.
  I have made some progress with ffmpeg library. Here I used silencedetect to list all the silences in an audio file.

  ffmpeg -i audio.wav -af silencedetect=n=-50dB:d=0.5 -f null - 2> /home/aliakber/log.txt
  

  Here is the output of the command:

  --With silence at the front and end of the audio file--

  [silencedetect @ 0x1043060] silence_start: 0.484979
  [silencedetect @ 0x1043060] silence_end: 1.36898 | silence_duration: 0.884
  [silencedetect @ 0x1043060] silence_start: 2.57298
  [silencedetect @ 0x1043060] silence_end: 3.48098 | silence_duration: 0.908
  [silencedetect @ 0x1043060] silence_start: 4.75698
  size=N/A time=00:00:05.56 bitrate=N/A
  

  --Without silence at the front and end of the audio file--

  [silencedetect @ 0x106fd60] silence_start: 0.353333
  [silencedetect @ 0x106fd60] silence_end: 1.25867 | silence_duration: 0.905333
  [silencedetect @ 0x106fd60] silence_start: 2.46533
  [silencedetect @ 0x106fd60] silence_end: 3.37067 | silence_duration: 0.905333
  size=N/A time=00:00:04.61 bitrate=N/A
  

  But I want something more flexible so that I can manipulate the output and do further task depending on the result.
  I want to get the output something like true or false. If there is a certain period of silence exists at the end of the audio file it will return true and false otherwise.

  Can someone suggest me an easy way to achieve this?