| Message ID | 1476646324-15429-1-git-send-email-cus@passwd.hu |
|---|---|
| State | Superseded |
| Headers | show |
Le quintidi 25 vendémiaire, an CCXXV, Marton Balint a écrit : > From: Kyle Swanson <k@ylo.ph> > > Signed-off-by: Kyle Swanson <k@ylo.ph> > Signed-off-by: Marton Balint <cus@passwd.hu> > --- > tools/loudnorm.rb | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 60 insertions(+) > create mode 100755 tools/loudnorm.rb > > diff --git a/tools/loudnorm.rb b/tools/loudnorm.rb > new file mode 100755 > index 0000000..39deb70 > --- /dev/null > +++ b/tools/loudnorm.rb > @@ -0,0 +1,60 @@ > +#!/usr/bin/env ruby > + > +require 'open3' > +require 'json' > + > +ffmpeg_bin = 'ffmpeg' > +target_il = -24.0 > +target_lra = +11.0 > +target_tp = -2.0 > +samplerate = '48k' > + > +if ARGF.argv.count != 2 > + puts "Usage: #{$PROGRAM_NAME} input.wav output.wav" > + exit 1 > +end > + > +ff_string = "#{ffmpeg_bin} -hide_banner " > +ff_string += "-i #{ARGF.argv[0]} " > +ff_string += '-af loudnorm=' > +ff_string += "I=#{target_il}:" > +ff_string += "LRA=#{target_lra}:" > +ff_string += "tp=#{target_tp}:" > +ff_string += 'print_format=json ' > +ff_string += '-f null -' This will break if the input file name contains special characters. I think I see popen3 can accept an array of arguments, it would be better to use it. > + > +_stdin, _stdout, stderr, wait_thr = Open3.popen3(ff_string) > + > +if wait_thr.value.success? > + stats = JSON.parse(stderr.read.lines[-12, 12].join) > + loudnorm_string = '-af loudnorm=' > + loudnorm_string += 'print_format=summary:' > + loudnorm_string += 'linear=true:' > + loudnorm_string += "I=#{target_il}:" > + loudnorm_string += "LRA=#{target_lra}:" > + loudnorm_string += "tp=#{target_tp}:" > + loudnorm_string += "measured_I=#{stats['input_i']}:" > + loudnorm_string += "measured_LRA=#{stats['input_lra']}:" > + loudnorm_string += "measured_tp=#{stats['input_tp']}:" > + loudnorm_string += "measured_thresh=#{stats['input_thresh']}:" > + loudnorm_string += "offset=#{stats['target_offset']}" > +else > + puts stderr.read > + exit 1 > +end > + > +ff_string = "#{ffmpeg_bin} -y -hide_banner " > +ff_string += "-i #{ARGF.argv[0]} " > +ff_string += "#{loudnorm_string} " > +ff_string += "-ar #{samplerate} " > +ff_string += ARGF.argv[1].to_s > + > +_stdin, _stdout, stderr, wait_thr = Open3.popen3(ff_string) > + > +if wait_thr.value.success? > + puts stderr.read.lines[-12, 12].join > + exit 0 > +else > + puts stderr.read > + exit 1 > +end Regards,
diff --git a/tools/loudnorm.rb b/tools/loudnorm.rb new file mode 100755 index 0000000..39deb70 --- /dev/null +++ b/tools/loudnorm.rb @@ -0,0 +1,60 @@ +#!/usr/bin/env ruby + +require 'open3' +require 'json' + +ffmpeg_bin = 'ffmpeg' +target_il = -24.0 +target_lra = +11.0 +target_tp = -2.0 +samplerate = '48k' + +if ARGF.argv.count != 2 + puts "Usage: #{$PROGRAM_NAME} input.wav output.wav" + exit 1 +end + +ff_string = "#{ffmpeg_bin} -hide_banner " +ff_string += "-i #{ARGF.argv[0]} " +ff_string += '-af loudnorm=' +ff_string += "I=#{target_il}:" +ff_string += "LRA=#{target_lra}:" +ff_string += "tp=#{target_tp}:" +ff_string += 'print_format=json ' +ff_string += '-f null -' + +_stdin, _stdout, stderr, wait_thr = Open3.popen3(ff_string) + +if wait_thr.value.success? + stats = JSON.parse(stderr.read.lines[-12, 12].join) + loudnorm_string = '-af loudnorm=' + loudnorm_string += 'print_format=summary:' + loudnorm_string += 'linear=true:' + loudnorm_string += "I=#{target_il}:" + loudnorm_string += "LRA=#{target_lra}:" + loudnorm_string += "tp=#{target_tp}:" + loudnorm_string += "measured_I=#{stats['input_i']}:" + loudnorm_string += "measured_LRA=#{stats['input_lra']}:" + loudnorm_string += "measured_tp=#{stats['input_tp']}:" + loudnorm_string += "measured_thresh=#{stats['input_thresh']}:" + loudnorm_string += "offset=#{stats['target_offset']}" +else + puts stderr.read + exit 1 +end + +ff_string = "#{ffmpeg_bin} -y -hide_banner " +ff_string += "-i #{ARGF.argv[0]} " +ff_string += "#{loudnorm_string} " +ff_string += "-ar #{samplerate} " +ff_string += ARGF.argv[1].to_s + +_stdin, _stdout, stderr, wait_thr = Open3.popen3(ff_string) + +if wait_thr.value.success? + puts stderr.read.lines[-12, 12].join + exit 0 +else + puts stderr.read + exit 1 +end