• How to convert audio for Asterisk .wav format


    In our example we take "sound.mp3" and convert it to .wav. Generally Asterisk for its wave needs one audio channel (-ac 1) / mono and 8000hz (-ar 8000) instead of the standard CD/MP3 of 44100hz. Here is the command to convert into Asterisk .wav format: ffmpeg -i sound.mp3 -ac 1 -ar 8000 sound.wav Errors Asterisk may give you if the format is wrong: -- Executing [91781891@cme:3] Playback("SIP/234-000........
  • How To Replace Audio Track of Video using ffmpeg


    A very common use case is that you don't want to waste time using a video editor that requires you to open it up and manually import the video clip and audio clip, then manually delete the old audio track and import the video and new audio. That's too much work and time since we don't want to go through the hassle. ffmpeg is our solution, all we have to do is specify 3 variables and we're done! -i Windows2019-Server-Noaudio.mp4 is our in........
  • ffmpeg trouble concatenating similar but different files


    When things go wrong your video is basically unplayable or the first video plays fine and then freezes when moving on to the next. Generally if both videos weren't produced with the exact 100% same settings you will have issues. You can try the basic concat but it often won't work right. Solution for me: My example uses 3 videos in total so "n=3" and a=1 to include audio. ffmpeg -threads 12 -i file1.mp4 -........
  • ffmpeg Linux Mint download, compile and install howto


    #if you have nvidia make sure you install the nvidia-cuda-toolkit so hardware acceleration can be used wget http://ffmpeg.org/releases/ffmpeg-3.3.2.tar.bz2 tar -jxvf ffmpeg-3.3.2.tar.bz2 cd ffmpeg-3.3.2/ ./configure --disable-yasm install prefix /usr/local source path ........
  • Openshot 2.2 is very unstable always crashing in Linux Mint 18.1!


    Jun 1 15:45:42 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]: project_data:INFO Missing folder chosen by user: Jun 1 15:45:42 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]: project_data:INFO Removed missing file: MAH02949.MP4 Jun 1 15:45:57 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]: ui_util:WARNING Icon theme media-playback-start not found. Will use backup........
  • How to Normalize and Increase the Volume on M4A files in Linux


    M4A is a weird format, so you have to be creative here is a quick copy of what I did. Basically you need to convert to .wav to make use of them and thenI converted the resulting .wav into an mp3 (nice small file size and basically universally playable): ======= sudo apt-get install mpg321 mp3gain faad normalize lame faad "Voice 002 (copy).m4a" faad "Voice 002 (copy).m4a"........
  • PAP2T Linksys VOIP strange ring problem


    The problem is that the default of most of these units is set for non-North American phones so the ring sounds like it cuts off and is not sequential. How To Fix the Issue Click on "Regional" and make sure you are in Advanced mode. ........
  • Linux CLI command to rip audio CD and encode convert to MP3s


    This command rips the audio tracks to .wav files *I recommend making a new directory with the name of the audio disc first and executing everything from within that directory below. cdparanoia -B Use the lame mp3 encoder to encode each one with this script: *Note that this will encode any other files ending in "cdda.wav" for track in `ls *cdda.wav`; do lame -b 192 $track; done........
  • bash string substitution


    so in this case we have files named like this: track01.cdda.wav.mp3 track06.cdda.wav.mp3 track11.cdda.wav.mp3 track02.cdda.wav.mp3 track07.cdda.wav.mp3 track12.cdda.wav.mp3 track03.cdda.wav.mp3 track08.cdda.wav.mp3 track13.cdda.wav.mp3 track04.cdda.wav.mp3 track09.cdda.wav.mp3 track05.cdda.wav.mp3 track10.cdda.wav.mp3 but we want to rename them so they are like "05.........
  • Become your own ISP!


    Become your own ISP!http://waverider.com/ I would link to the exact product I am mentioning but it's under Products/5.8Ghz because I can't find the exact URL because of their annoying javascript and frames (you'll see what I mean). The exciting thing is that this unit can supposedly be up to 72mbit, it is NOT line of sight and the range is up to 20miles. I wonder how real world speeds and range would actually be and if it is reliable. I j........
  • LAME MP3 Encoder Segmentation Faults


    This happened on one of my Ubuntu machines where Igot some kind of segfault on line 21 from LAME at random while encoding MP3s (a second try is fine usually). I've read that it's best to compile it from source and that has solved most issues for people. Here is my preferred configure line: ./configure --enable-mp3x --with-fileio=lame --enable-debug --with-vorbis Even with that I got a different error this tim........
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