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• FFMPEG : Appending an audio file at a specified time in a video file with pre-existing audio results in no addition [duplicate]

  15 juin 2020, par JarsOfJam-Scheduler

  I have a video that contains images and a pre-existing audio.

  



  I have an audio file of a duration Y that I would want to start in this video, after 5 seconds. It must no replace the audio during these Y seconds, but be appended. As a result I should hear both audio during these Y seconds.

  



  What I've try to do is :

  



  ffmpeg -i the_video.webm -itsoffset 5 -i the_audio_file.mp3 -map 0 -map 1 -c:v copy resulting_video_with_both_audio.webm

  



  So it should add the_audio_file.mp3 after 5 seconds. It should take all the streams of the video file, and all the streams of the new audio file, and mix it.

  



  However my problem is that I only hear the audio of the video. I don't hear, indeed, the new audio at all. I should hear, during the first 5 seconds, the audio of the video. Then after 5 seconds, the audio of the video PLUS the Y seconds of the new audio file. Then after these Y seconds, the audio of the video until the end of the video.

  



  Do you know how to fix this bug ? Why doesn't this command work ? Please I would prefer an answer that doesn't use -filter (because this command'll be executed in a Python script).

  


• How can I copy metadata from source original video file to compressed video file like AV1 without reencode ?

  16 août 2021, par MartinHero13

  I am just trying to copy metadata from original video file (1.24 GB) into AV1 video file (80 MB).
It did not encoded AV1 for FFmpeg, just I encoded to AV1 using by NotEnoughAV1Encoders.
So, any solutions for copy metadata from original to AV1 video file without reencode ?

  


• FFmpeg file not found exception, No such file or directory

  16 avril 2020, par Sagar

  I am getting the No such file or directory exception on video trimming.

  



  video path : /storage/emulated/0/Pictures/Instagram/Fast & Furious 7 - Get Low Extended Version Video.mp4

  



  file name : Fast & Furious 7 - Get Low Extended Version Video.mp4

  



  and ffmpeg searching for only Fast in/storage/emulated/0/Pictures/Instagram/Fast: No such file or directory


  



  I have found the issue, it is causing due to the file name having spaces in between them you can check in the above mentioned path and in exception.

  



  after changing the file name its working but the changing name of every file from the device it's not the right way so how can I solve this exception

  



  FAILED with output : WARNING: linker: /data/user/0/com.example.SeekBarActivity/files/ffmpeg 
has text relocations. This is wasting memory and prevents security hardening.
Please fix. FFmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers

built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-
android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --
cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-
Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 
--enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --
prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-
cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -
U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-
all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-
 android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-
 lpng -lexpat -lm' --extra-cxxflags=
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
  /storage/emulated/0/Pictures/Instagram/Fast: No such file or directory