Ross-MBP:audio_clips rossarnott$ ffmpeg-normalize W5S1-Rest-3-9-Introduction.m4v -c:a aac -nt ebu -t -5 -f -debug -o processed_audio/W5S1-Rest-3-9-Introduction2.m4vĭEBUG: found executable in path: /usr/local/bin/ffmpegĭEBUG: Running command: ĭEBUG: Parsing streams of W5S1-Rest-3-9-Introduction.m4vĭEBUG: ffmpeg version 4.0.2 Copyright © 2000-2018 the FFmpeg developersīuilt with Apple LLVM version 10.0.0 (clang-1000.11.45.2)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/4.0.2 -enable-shared -enable-pthreads -enable-version3 -enable-hardcoded-tables -enable-avresample -cc=clang -host-cflags= -host-ldflags= -enable-gpl -enable-libass -enable-libfdk-aac -enable-libfreetype -enable-libmp3lame -enable-libvpx -enable-libx264 -enable-libx265 -enable-libxvid -enable-opencl -enable-videotoolbox -disable-lzma -enable-nonfree
![ffmpeg command line quiet ffmpeg command line quiet](https://linuxhint.com/wp-content/uploads/2020/02/6-43-1140x274.png)
on darwinįfmpeg version 4.0.2 Copyright © 2000-2018 the FFmpeg developers This may be an artefact of the algorithm needing more samples to work? I was not able to figure out the math for 24bit, all my values became ridicously high and did not even work in any way.įfmpeg-normalize $i -c:a aac -nt ebu -t -5 -f -o processed_audio/$i.m4vĪnd I find that short files, less than 3 seconds or so, don’t get normalized. Honestly, I did not fully understand what was going on, but I have a table if someone wants so experiment with it more ? And keep in mind that for example 44100Hz results in a pad time of 512 seconds… Yes, (when using the approach with -acodec copy ) for the padding time (t) in terms of accuracy a size of 2048 samples does work for 16bit and any sample rate (Fs) using the formula t = LCM( Fs, size ) / Fs (not LCD!), but it did not work for me anymore once I dealt with 24bit files. This way the codec will be preserved instead of copied (the exact difference I was not able to understand so far ? )
![ffmpeg command line quiet ffmpeg command line quiet](https://i.stack.imgur.com/ZrTco.png)
![ffmpeg command line quiet ffmpeg command line quiet](https://www.skillsugar.com/media/image/get-duration-of-video-ffmpeg-1616444521.png)
Issues with clipping if in your last line you change -acodec copy to -acodec %codec_name%įOR /F "tokens=*" %%C IN ('"ffprobe -i "%input_file%" -select_streams a:0 -show_entries stream=codec_name -hide_banner -v quiet -of csv=p=0"') DO ( SET codec_name=%%C)