Ableton Forum

I just want to ask if I download a 1920P HD video on youtube and extract the audio by using garageband, would that be a legit 320 MP3? if so how would I know? because there are some hard to find tracks that are not available for sale but uploaded on youtube to the highest quality so I would just rip them and extract the audio then convert them to 320 MP3 via iTunes. Let me know what you think! Thanks

According to wikipedia both 720p and 1080p use 192kbit/s aac audio. AFAIK the best option would be to rip the audio without re-encoding it. Sadly i dont know any programs that could do it.

So the short answer is no.

Every time you re-encode using a lossy format you lose quality.
http://tinyapps.org/blog/mac/2012112207 ... o_mp4.html
Download the mp4 and try the methods in the link. That way you will get a file that is exactly the same quality as in youtube and should drop into iTunes.

If you cant do it and have only a couple of songs then you can PM me the links and i will convert them for you.

RottenPony wrote:According to wikipedia both 720p and 1080p use 192kbit/s aac audio. AFAIK the best option would be to rip the audio without re-encoding it. Sadly i dont know any programs that could do it.

So the short answer is no.

I've download Spek Acoustic Spectrum Analyzer yesterday when I got home and these are the results:

Here is for the 1920P Youtube rip that I extracted using garageband:


this clearly shows that the audio quality is only at 128kbps even though it says 320kbps.

This one is a legit 320 file:


For a legit 320 high quality audio the cut-off should be at 20 kHz based on this guide:

MP3 file, Bitrate 64 kbps. Cut-off at 11kHz
MP3 file, Bitrate 128 kbps. Cut-off at 16 kHz.
MP3 file, Bitrate 192 kbps. Cut-off at 19 kHz.
MP3 file, Bitrate 320 kbps. Cut-off at 20 kHz.
M4A file, Bitrate 500 kbps. Cut-off at 22 kHz.
FLAC file, Lossless quality (Bitrate usually 1000 kbps or higher)

I think I'm going to try the methods from the link that you provided. I will let you know of the result once I'm done.

Unfortunately I got the same result as before after doing the methods in http://tinyapps.org/blog/mac/2012112207 ... o_mp4.html I guess i'll just ask someone who has a copy of the tracks that I need.