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• How to get offset from audio

  24 avril 2014, par Dhaval

  I need to insert another audio on specific offset (where space existed in audio track).

  So, For that, i need to fetch offset of each space from audio and then apply some ffmpeg/sox command to insert another aduio on that offset.

  Please share me some command to fetch the offset for space
  first so, later, i could mix the another audio on same offset.

  Please suggest your view/command or any library.

  I think, it would be possible in FFMPEG OR SOX.

  Updated :
  I have two audio files.
  In which one audio files contains some songs but, there are some space at some interval. These space should be fill by another audio.

  example :
  Audio 1 - song - audio has space at 5 places.

  audio 2 - a people name audio.

  output - audio one should fill up the all 5 places by aduio 2.

  Thanks

• Trying to Send my RTSP IP Camera Stream Through ffmpeg plugin in flutter

  23 juillet 2021, par Adarsh Singh

  I am trying to send the RTSP IP camera stream to youtube through flutter_ffmpeg 0.4.0 here is my code

  


  _flutterFFmpeg.execute("ffmpeg -f lavfi -i anullsrc -rtsp_transport udp -i rtsp://admin:admin@IP_Address:554/stream1 -tune zerolatency -vcodec libx264 -t 12:00:00 -pix_fmt + -c:v copy -c:a aac -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/STREAM_NAME").then((rc) => print("FFmpeg process exited with rc $rc"));


  


  When I am pressing the button to go live it gives the output

  


      I/mobile-ffmpeg(32170):   built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
I/mobile-ffmpeg(32170):   configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
I/mobile-ffmpeg(32170):   libavutil      56. 55.100 / 56. 55.100
I/mobile-ffmpeg(32170):   libavcodec     58. 96.100 / 58. 96.100
I/mobile-ffmpeg(32170):   libavformat    58. 48.100 / 58. 48.100
I/mobile-ffmpeg(32170):   libavdevice    58. 11.101 / 58. 11.101
I/mobile-ffmpeg(32170):   libavfilter     7. 87.100 /  7. 87.100
I/mobile-ffmpeg(32170):   libswscale      5.  8.100 /  5.  8.100
I/mobile-ffmpeg(32170):   libswresample   3.  8.100 /  3.  8.100
I/mobile-ffmpeg(32170): Input #0, lavfi, from 'anullsrc':
I/mobile-ffmpeg(32170):   Duration: 
I/mobile-ffmpeg(32170): N/A
I/mobile-ffmpeg(32170): , start: 
I/mobile-ffmpeg(32170): 0.000000
I/mobile-ffmpeg(32170): , bitrate: 
I/mobile-ffmpeg(32170): 705 kb/s
I/mobile-ffmpeg(32170): 
I/mobile-ffmpeg(32170):     Stream #0:0
I/mobile-ffmpeg(32170): : Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s


  


  and ending up by giving this error

  


  > > E/mobile-ffmpeg(32170): [tcp @ 0x6ee47f54e0] Connection to tcp://192.168.137.199:554?timeout=0 failed: Connection timed out
> E/mobile-ffmpeg(32170):
> rtsp://admins:admins@192.168.137.199:554/stream1: Connection timed out
> D/flutter-ffmpeg(32170): FFmpeg exited with rc: 1 I/flutter (32170):
> FFmpeg process exited with rc 1


  


• IOS ffmpeg Invalid input file index ERROR

  17 octobre 2023, par Mkerse

  I want to combine the images and create a new video. However, ffmpeg "Invalid input file index : 4." even though I did not create 4 inputs. it gives this error. Where am I doing wrong ?

  


  I share the command below

  


  ffmpeg
-loop 1 -t 3.83 -i file:///var/mobile/Media/DCIM/100APPLE/IMG_0301.JPG
-loop 1 -t 3.73 -i file:///var/mobile/Media/DCIM/100APPLE/IMG_0175.JPG
-loop 1 -t 3.73 -i file:///var/mobile/Media/DCIM/100APPLE/IMG_0301.JPG
-loop 1 -t 4.80 -i file:///var/mobile/Media/DCIM/100APPLE/IMG_0175.JPG
-filter_complex 
"[0:v]scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,setsar=1[v0];
 [1:v]scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,setsar=1[v1];
 [2:v]scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,setsar=1[v2];
 [3:v]scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,setsar=1[v3];
 [v0][v1][v2][v3]concat=n=4:v=1:a=0,format=yuv444p10le[v]" 
-map "[v]" -map 4:a -q:v 0 -vcodec mpeg4 -r 20 -crf 18 -s 1080x1920 -c:a copy -t 16.10 file:///var/mobile/Containers/Data/Application/2268F740-2254-4514-ADD3-F9ACEB13B7CB/Documents/Export.mp4


  


  Even though I expect the command to create a new video, it keeps giving the same error. It worked on Android.