Thank you!
Il giorno gio 24 set 2020 alle ore 09:54 Paul B Mahol <one...@gmail.com> ha scritto: > On Wed, Sep 23, 2020 at 03:30:25PM +0200, Marco Mircoli wrote: > > Thanks Motitz, > > this is a one pass norm. > > Is there a way to implement 2 pass? > > Yes there is a way, you can search google among other things. > > First run loudnorm to get report of loudness values, after that > use that reported values in new, 2nd pass. > > > Thanks. > > S. > > > > > > Il giorno mer 23 set 2020 alle ore 14:42 Moritz Barsnick < > barsn...@gmx.net> > > ha scritto: > > > > > On Wed, Sep 23, 2020 at 14:16:31 +0200, Marco Mircoli wrote: > > > > Just bought a php script that use ffmpeg. > > > > > > I hope it's worth it. ;) > > > > > > > this is the line > > > > $shell = shell_exec("$ffmpeg_b -i $audio_file_full_path -map > 0:a:0 > > > -b:a > > > > 96k $audio_output_mp3 2>&1"); > > > > > > > > I'm wondering if it is possible to include in the conversion the > audio > > > > level normalization to R128 loudness profile. > > > > I think it is possible, but I don't know how to do it :-( > > > > > > Sure. You just need to insert a filter to the command line. The R128 > > > filter is even described here: > > > > > > https://trac.ffmpeg.org/wiki/AudioVolume#LoudnessNormalization > > > > > > > $shell = shell_exec("$ffmpeg_b -i $audio_file_full_path -map > 0:a:0 > > > -b:a 96k $audio_output_mp3 2>&1"); > > > > > > Just add the loudnorm filter: > > > > > > $shell = shell_exec("$ffmpeg_b -i $audio_file_full_path -map 0:a:0 > -af > > > loudnorm -b:a 96k $audio_output_mp3 2>&1"); > > > > > > To fine tune the filter's behavior, check ffmpeg's filters > > > documentation, or > > > > > > $ ffmpeg -h filter=loudnorm > > > > > > Good luck, > > > Moritz > > > _______________________________________________ > > > ffmpeg-user mailing list > > > ffmpeg-user@ffmpeg.org > > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > > > To unsubscribe, visit link above, or email > > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".