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• Voice Declaration of Music File

  6 septembre 2015, par linuxfreebird

  I am struggling so hard with this bash script. I want my mp3 file to have a voice synthesis play at the beginning stating the name of the mp3 file before the music starts playing. I feel like there must be something out there that already does this, but I have not found one. I want the script to just take one argument str_url and it takes care of all of these steps automatically.

  str_title=$(youtube-dl -c --simulate --get-title $str_url) # get video name as string
  
  str_title=$(echo "$str_title" | sed 's|/||g') # remove '/' characters to stop directory creation
  
  youtube-dl -c -o "$str_title.%(ext)s" $str_url # generate audio mp4 file
  
  avconv -i "$str_title"".mp4" -vn -f wav "$str_title"".wav" # convert mp4 to wav
  
  rm "$str_title"".mp4" # delete mp4
  
  espeak --stdout > "espeak.wav" "$str_title" #convert text to speech sound wav file
  
  normalize-audio "$str_title"".wav"
  
  normalize-audio "espeak.wav"
  
  ffmpeg -i "espeak.wav" -i "$str_title"".wav" \
  
  -filter_complex "[0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a]" \
  
  -map "[v]" -map "[a]" "espeak - ""$str_title"".wav"
  
  ffmpeg -i "espeak - ""$str_title"".wav" -codec:a libmp3lame -qscale:a 2 "espeak - ""$str_title"".mp3"

  I am having trouble recombining the wav files back into a mp3 file that my car can play. I tried using mp3wrap, but my car did not recognize the audio file. My car only recognizes basic mp3 files which I had to use sound convert to convert them to mp3. The current version of my script generates the following error :

  Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s
  
  Stream specifier ':0' in filtergraph description [0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a] matches no streams.

  I am using ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers.

  What should I do next ? Is there linux program that already does this ?
  Thank you for your time and consideration.

• add background music for last 5 second or fade in last 5 seconds a mp4 video

  30 décembre 2019, par Akhi

  I want to add background music for last 5 second in a mp4 video.how ? or fade in last 5 seconds. first time fade out then fade in for last 5 seconds.Please help.
  I tried

  ffmpeg -y -r 30 -i a.mp4 -i nn.mp3 -filter_complex "[0:a]volume=0,asplit[0a][0acf];
  
  [1:a]adelay=15s|15s[1a]; 
  
  [0a][1a]amix=inputs=2:duration=first:dropout_transition=0,volume=2,afifo[outro];
  
  [0acf]atrim=0:16,afifo[0acf];
  
  [outro][0acf]acrossfade=d=20[outro]; 
  
  [0:a][outro]amix=duration=first:weights=\'2 1\'[a]" -map 0:v -c:v copy -map [a] output.mp4 

• add background music to video using ffmpeg ?

  3 décembre 2019, par sibbasa

  I have a video file (mp4) with sound, how can I add background music to it ? Using ffmpeg.

  Example please :)
  I tried like this :

  ffmpeg -i son.wav -i video_origine.mp4 video_finale.mp4

  But this method muffles the main sound.