Ake Posted September 22, 2017 Share Posted September 22, 2017 Hey guys I once uploaded a DJ set to Youtube and used an MP3 320 kbps (LAME) file that was converted from the original WAV file to create the MP4 file for the upload, needless to say that i only used proper lossless files for the DJ set. Unfortunately i lost both, the MP3 and the WAV file of the DJ set. So i was hoping to be able to get at least the 'original upload audio quality' by using the premium version of 'Youtube to MP3 Converter', spent $9 for this. Anyway, windows and dbPoweramp tell me the audio quality is low, 95 kbps. Crap! So it seems to me that people listening to music on Youtube get very low MP3 quality all the time. Just letting you know. Correct me if i'm wrong about this. Cheers Quote Link to comment Share on other sites More sharing options...
Dolmot Posted September 23, 2017 Share Posted September 23, 2017 It's a tricky question. Without going into details, can you just send me a link and I'll check it? Quote Link to comment Share on other sites More sharing options...
Ake Posted September 23, 2017 Author Share Posted September 23, 2017 There's not really a question in my above post, anyway might be interesting what people say about this as I'm not a computer geek so thanks and there you go: Quote Link to comment Share on other sites More sharing options...
Dolmot Posted September 23, 2017 Share Posted September 23, 2017 Alright, let's see... $ youtube-dl --list-formats https://www.youtube.com/watch?v=AJ44v2fln_w [youtube] AJ44v2fln_w: Downloading webpage [youtube] AJ44v2fln_w: Downloading video info webpage [youtube] AJ44v2fln_w: Extracting video information WARNING: unable to extract uploader nickname [youtube] AJ44v2fln_w: Downloading MPD manifest [info] Available formats for AJ44v2fln_w: format code extension resolution note 139 m4a audio only DASH audio 66k , m4a_dash container, mp4a.40.5@ 48k (22050Hz) 140 m4a audio only DASH audio 145k , m4a_dash container, mp4a.40.2@128k (44100Hz) 160 mp4 192x144 DASH video 108k , avc1.4d400b, 30fps, video only 134 mp4 480x360 DASH video 112k , avc1.4d401e, 30fps, video only 133 mp4 320x240 DASH video 242k , avc1.4d400c, 30fps, video only 137 mp4 1440x1080 DASH video 752k , avc1.640028, 30fps, video only 135 mp4 640x480 DASH video 1155k , avc1.4d4014, 30fps, video only 136 mp4 960x720 DASH video 2310k , avc1.4d4016, 30fps, video only 17 3gp 176x144 small , mp4v.20.3, mp4a.40.2@ 24k 36 3gp 320x240 small , mp4v.20.3, mp4a.40.2 18 mp4 480x360 medium , avc1.42001E, mp4a.40.2@ 96k 43 webm 640x360 medium , vp8.0, vorbis@128k 22 mp4 960x720 hd720 , avc1.64001F, mp4a.40.2@192k (best) $ youtube-dl -f 22 -x --audio-format best https://www.youtube.com/watch?v=AJ44v2fln_w [youtube] AJ44v2fln_w: Downloading webpage [youtube] AJ44v2fln_w: Downloading video info webpage [youtube] AJ44v2fln_w: Extracting video information WARNING: unable to extract uploader nickname [youtube] AJ44v2fln_w: Downloading MPD manifest [download] Destination: Butterfly Witchcraft (mixed by ake)-AJ44v2fln_w.mp4 [download] 100% of 479.18MiB in 02:33 [ffmpeg] Destination: Butterfly Witchcraft (mixed by ake)-AJ44v2fln_w.m4a $ ls -la 108500367 Jan 23 2017 Butterfly Witchcraft (mixed by ake)-AJ44v2fln_w.m4a $ ffprobe Butterfly\ Witchcraft\ \(mixed\ by\ ake\)-AJ44v2fln_w.m4a ffprobe version 3.2.2 Copyright (c) 2007-2016 the FFmpeg developers Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Butterfly Witchcraft (mixed by ake)-AJ44v2fln_w.m4a': Metadata: major_brand : M4A minor_version : 512 compatible_brands: isomiso2 creation_time : 2017-01-23T15:37:25.000000Z encoder : Lavf56.1.0 Duration: 01:14:16.84, start: 0.000000, bitrate: 194 kb/s Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 191 kb/s (default) Metadata: creation_time : 2017-01-23T15:37:25.000000Z handler_name : SoundHandler Short version: apparently you can dump a 194 kbps m4a, and there's no need to pay $9 for it. However, recently there's been some talk about YouTube auto-applying dynamics processing and re-encoding so I cannot guarantee that the quality is really the same as in the original mp4. And as this is m4a, it won't be the same as the original mp3 that was used as the source for the video. At least one re-encoding has taken place in any case. Anyway, should be better than 95 kbps mp3. Quote Link to comment Share on other sites More sharing options...
Ake Posted September 24, 2017 Author Share Posted September 24, 2017 Interesting. Thank you for the info. Everybody: Save your DJ sets properly. No, not later. Now! Quote Link to comment Share on other sites More sharing options...
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