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How does that compare with ffmpeg? The arguments seem about the same.
by hk1337 2y ago
How does that compare with ffmpeg? The arguments seem about the same.
- krackers 2y agoafcovert uses the superior inbuilt AAC converter. FFmpeg can do this as well with the right arguments but you have to dig them up and the quality is capped to a lower value than you can get with afconvert.
- anthk 2y agoThere's no reason to use AAC when we have both OPUS and FLAC.
- daneel_w 2y agoI have three reasons: when using a good encoder (Core Audio, FDK or Nero) it's a quality-wise better lossy format than MP3, it's smaller than FLAC which matters for storage footprint, and unlike Opus and FLAC it's supported pretty much everywhere. At some point Opus will reach the same level of adoption and that's the point where I'll make the switch from AAC, because Opus is evidently a better lossy encoder per same bitrate.
- anthk 2y agoOpus is today in every smartphone. MP3's died. No one cares about AAC. You are using Opus on most VoIP/call providers. Meanwhile, AAC, MP3, OGG... are history today.
- daneel_w 2y ago> You are using Opus on most VoIP/call providers. No. Opus support in the PSTN is still unfortunately almost non-existent. Adoption is growing but the pace is very slow. Source: me, working in the European telecommunications industry for over a decade, specializing in telephony and SMS.
- ok_computer 2y agoIt’s nuts using youtube-dl and unwrapping to get the opus files are like 96kbs and sound good. 96kbs mp3 would need to mix to mono and still sound like gravel.
- ok_computer 2y agoI like to load WAVs on my iphone if lossless uncompressed available. AAC is the next highest quality supported lossy compression file in apple music app. From my understanding they won’t ever go to flac or opus because don’t want software decompression. I like opus on VLC for youtube-dl rips but if I’m buying music I want lossless uncompressed.
- synthoidzeta 2y agoIsn't -c:a aac_at the same? And then designate bitrate?
- daneel_w 2y agoffmpeg offers a few different encoders for many of its supported audio/video formats, and the result depends on what encoder you tell ffmpeg to use. It does not have support for using Core Audio on macOS but it does offer FDK AAC, which is one of the better AAC encoders available today - though not nearly as good as the one available in Core Audio.
- seec 2y agoDo you have any sources/informations on an objective comparison of encoders quality ? Way back then (iPod era), I made an exposé for a science exam (small paper), proving that AAC was indeed better than MP3 both subjectively and objectively at most bitrates. This is how I got introduced to Fourier transforms and the likes; it was very interesting to see that you can literally "see" the difference in quality on the encoded waveform output. But I just used the default encoders on the Mac and I didn't think about going in deep into encoder comparisons at the time. Does it matter that much? From what I know, it just about properly programming a math spec, with some tricks but I wonder if that makes that much of a difference. In any case, above 256kbps it takes a very skilled listener to correctly identify encoded music. Apple has some useful tools for that, particularly AU Lab that allows you A/B testing of tracks with on-the-fly encoding. https://www.apple.com/apple-music/apple-digital-masters/ https://www.apple.com/apple-music/apple-digital-masters/
- anthk 2y agoToday OPUS is on par of AAC if not better. We aren't at the MP3/OGG times.