Lets Talk Metal
May 21, 2015 at 12:40 PM Post #18,918 of 29,651
  Oh my god. I randomly stumbled upon this post 3 days ago when Metal Alchemist linked me this thread.
EDIT2: And thank you Metal Alchemist too for introducing me this thread
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There it is, folks. Not only am I the Music Alchemist; I am also the Metal Alchemist!
very_evil_smiley.gif

 
May 21, 2015 at 1:00 PM Post #18,919 of 29,651
:D Hahaha..... Sorry for messing up your name 
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May 21, 2015 at 1:01 PM Post #18,920 of 29,651
Best bitrate they had was 192kbps for HD. I don't know if that has changed since they introduced 4K. Vimeo has much better video and audio encoding compression at least, you get 320kbps.

 
For the Rob Scallon video posted above:
 
$ youtube-dl -F https://www.youtube.com/watch?v=PtwXdKkO75E
[youtube] PtwXdKkO75E: Downloading webpage
[youtube] PtwXdKkO75E: Extracting video information
[youtube] PtwXdKkO75E: Downloading DASH manifest
[info] Available formats for PtwXdKkO75E:
format code  extension  resolution note
140          m4a        audio only DASH audio  129k , m4a_dash container, aac  @128k (44100Hz), 3.13MiB
171          webm       audio only DASH audio  141k , audio@128k (44100Hz), 3.16MiB
141          m4a        audio only DASH audio  255k , m4a_dash container, aac  @256k (44100Hz), 6.21MiB
 
"webm" implies Opus.
What encoder YouTube uses for their AAC streams is still anyones guess, but it's been like this for some time now.
 
May 21, 2015 at 1:01 PM Post #18,921 of 29,651
May 21, 2015 at 1:19 PM Post #18,923 of 29,651
Best bitrate they had was 192kbps for HD. I don't know if that has changed since they introduced 4K. Vimeo has much better video and audio encoding compression at least, you get 320kbps.


For the Rob Scallon video posted above:

$ youtube-dl -F https://www.youtube.com/watch?v=PtwXdKkO75E

[youtube] PtwXdKkO75E: Downloading webpage

[youtube] PtwXdKkO75E: Extracting video information

[youtube] PtwXdKkO75E: Downloading DASH manifest

[info] Available formats for PtwXdKkO75E:

format code  extension  resolution note

140          m4a        audio only DASH audio  129k , m4a_dash container, aac  @128k (44100Hz), 3.13MiB

171          webm       audio only DASH audio  141k , audio@128k (44100Hz), 3.16MiB

141          m4a        audio only DASH audio  255k , m4a_dash container, aac  @256k (44100Hz), 6.21MiB

"webm" implies Opus.

What encoder YouTube uses for their AAC streams is still anyones guess, but it's been like this for some time now.


256k AAC is for 1080p?
 
May 21, 2015 at 1:30 PM Post #18,924 of 29,651
   
There it is, folks. Not only am I the Music Alchemist; I am also the Metal Alchemist!
very_evil_smiley.gif

 
Congrats, you are now also officially immortalized in the pantheon of metal (for me it happened last year at Burning Man where I did a black metal-only DJ set and played so loud that - I kid you not - the generator started melting and I had to cut my set short).
 
May 21, 2015 at 1:35 PM Post #18,925 of 29,651

 
You really hate when I have fun, don't you? <3
 
  I remember you recommending fidelizer. If i understood it right, you must restart it every time you resart your pc. Had you found a way to make it stay open, besides writting a script for this?

 
There are paid upgrades with more features.
 
256k AAC is for 1080p?

 
256 kbps AAC is indistinguishable from lossless. (Unless you can prove otherwise with a documented listening test.)
 
May 21, 2015 at 1:38 PM Post #18,926 of 29,651
  Congrats, you are now also officially immortalized in the pantheon of metal (for me it happened last year at Burning Man where I did a black metal-only DJ set and played so loud that - I kid you not - the generator started melting and I had to cut my set short).

That's not nearly as cool and legit as having your name misspelled in an internet forum.
Try again, poser.
:p
 
  You really hate when I have fun, don't you? <3

Yessssssssss.
 
May 21, 2015 at 1:45 PM Post #18,928 of 29,651
Yessssssssss.

 
ehehe! At least it's fun having a friendly arch-nemesis. Some of your jokes in the anime thread were priceless. Like that one about me being the sole survivor of laboratory experiments done by my father to create a super-human. XD
 
What I mean is, is 256kbps AAC used for 1080p buffering on youtube?

 
Oh. I dunno. But for me it doesn't matter, because no matter what it is, it's often going to be compressed more than it leads on.
 
May 21, 2015 at 1:54 PM Post #18,930 of 29,651
256k AAC is for 1080p?

 
I haven't checked that, but I'd expect the 256k rate to hold for medium resolutions as well.
After all, the gain in reduced data rates (to accommodate lower bandwidths) are rather small when stepping audio down from say 256k to 192k, compared with the gains when stepping down from ~4.5mbps (1080p) to ~2.5mbps (720p) video. 64kbps saved by reducing audio quality by a notch, vs. ~2000kbps saved by reducing video quality by a notch.
 

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