Bitrate is the same despite different audio quality settings

[danvass]

Hello,

I use --extract-audio --audio-format mp3 --audio-quality 0 and 9 but the bitrate remains at 256 for both files. Why is this?

Thanks,
Daniel

[yan12125]

Which URL are you testing? Post both commands with full verbose logs.

[danvass]

@yan12125 Just random ones I'll choose another and post it in a second.

[danvass]

Here it is:

[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'https://www.youtube.com/watch?v=YgWpYLh0zNM', u'--extract-audio', u'--audio-quality', u'0', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.10.06.2
[debug] Python version 2.7.6 - Linux-3.13.0-57-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: avconv 9.18-6, avprobe 9.18-6
[debug] Proxy map: {}
[youtube] YgWpYLh0zNM: Downloading webpage
[youtube] YgWpYLh0zNM: Downloading video info webpage
[youtube] YgWpYLh0zNM: Extracting video information
[youtube] YgWpYLh0zNM: Downloading DASH manifest
[youtube] YgWpYLh0zNM: Downloading DASH manifest
[debug] Invoking downloader on 'https://r14---sn-5uaeznze.googlevideo.com/videoplayback?id=6205a960b874ccd3&itag=141&source=youtube&requiressl=yes&ms=au&mv=m&pl=22&mm=31&mn=sn-5uaeznze&nh=IgpwcjAxLmF0bDAxKg0yMTMuMjQ4LjkwLjY1&ratebypass=yes&mime=audio/mp4&gir=yes&clen=10909752&lmt=1390336288303082&dur=342.169&mt=1444204518&fexp=9406819,9408710,9408940,9409069,9414764,9415365,9415485,9416023,9416126,9416494,9417368,9417707,9417786,9418448,9418613,9418803,9419446,9419796,9420348,9421013,9421254,9421699,9422400&sver=3&signature=1F12AD122051B0B15BFCCF4293AA1827B707A4E0.96DB11B176260ED88762AE0E6FFB4E30CFFDDBA6&upn=jbXdkHLXblk&key=dg_yt0&ip=45.55.60.214&ipbits=0&expire=1444226249&sparams=ip,ipbits,expire,id,itag,source,requiressl,ms,mv,pl,mm,mn,nh,ratebypass,mime,gir,clen,lmt,dur'
[download] Destination: Aurora - Solace-YgWpYLh0zNM.m4a
[download] 100% of 10.40MiB in 00:00
[ffmpeg] Correcting container in "Aurora - Solace-YgWpYLh0zNM.m4a"
WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors.
[debug] ffmpeg command line: avconv -y -i 'file:Aurora - Solace-YgWpYLh0zNM.m4a' -c copy -f mp4 'file:Aurora - Solace-YgWpYLh0zNM.temp.m4a'
[debug] avconv command line: avprobe -show_streams 'file:Aurora - Solace-YgWpYLh0zNM.m4a'
[ffmpeg] Post-process file Aurora - Solace-YgWpYLh0zNM.m4a exists, skipping

and

[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'https://www.youtube.com/watch?v=YgWpYLh0zNM', u'--extract-audio', u'--audio-quality', u'9', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.10.06.2
[debug] Python version 2.7.6 - Linux-3.13.0-57-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: avconv 9.18-6, avprobe 9.18-6
[debug] Proxy map: {}
[youtube] YgWpYLh0zNM: Downloading webpage
[youtube] YgWpYLh0zNM: Downloading video info webpage
[youtube] YgWpYLh0zNM: Extracting video information
[youtube] YgWpYLh0zNM: Downloading DASH manifest
[youtube] YgWpYLh0zNM: Downloading DASH manifest
[debug] Invoking downloader on 'https://r14---sn-5uaeznze.googlevideo.com/videoplayback?id=6205a960b874ccd3&itag=141&source=youtube&requiressl=yes&mn=sn-5uaeznze&pl=22&mm=31&mv=m&ms=au&nh=IgpwcjAxLmF0bDAxKg0yMTMuMjQ4LjkwLjY1&ratebypass=yes&mime=audio/mp4&gir=yes&clen=10909752&lmt=1390336288303082&dur=342.169&mt=1444204625&fexp=9405957,9406994,9408253,9408710,9409069,9412859,9414764,9415365,9415485,9416023,9416126,9416729,9416768,9417701,9417707,9418203,9418401,9418448,9419062,9419993,9420348,9420928,9421013,9421469,9421647&upn=rVBhvfYFyAU&sver=3&key=dg_yt0&signature=51EEED49A05D5DE2A23D48C0E2DC8311AB04A244.0985FCEF780565CA2303317BC6C184F23A7CF217&ip=45.55.60.214&ipbits=0&expire=1444226325&sparams=ip,ipbits,expire,id,itag,source,requiressl,mn,pl,mm,mv,ms,nh,ratebypass,mime,gir,clen,lmt,dur'
[download] Aurora - Solace-YgWpYLh0zNM.m4a has already been downloaded
[download] 100% of 10.46MiB
[ffmpeg] Correcting container in "Aurora - Solace-YgWpYLh0zNM.m4a"
WARNING: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors.
[debug] ffmpeg command line: avconv -y -i 'file:Aurora - Solace-YgWpYLh0zNM.m4a' -c copy -f mp4 'file:Aurora - Solace-YgWpYLh0zNM.temp.m4a'
[debug] avconv command line: avprobe -show_streams 'file:Aurora - Solace-YgWpYLh0zNM.m4a'
[ffmpeg] Post-process file Aurora - Solace-YgWpYLh0zNM.m4a exists, skipping

[danvass]

@yan12125 There you go.

[yan12125]

Thanks for the detailed information. Currently only MP3 format supports different audio qualities. Try the following commands:

youtube-dl 'https://www.youtube.com/watch?v=YgWpYLh0zNM' --extract-audio --audio-quality 0 -v --audio-format mp3
youtube-dl 'https://www.youtube.com/watch?v=YgWpYLh0zNM' --extract-audio --audio-quality 9 -v --audio-format mp3

[danvass]

@yan12125 I tried that and it made no difference. Bitrate remained the same.

[yan12125]

The first command gives me a 251kbps MP3 while the second one, 80kbps. Could you paste the full verbose log of running these two commands?