Hey everyone!
I need advice on resampling.
To give you context, I am working at SoundCloud, and one of the current
projects is to refactor the transcoding pipeline. And proper resampling
tools is a question that keeps coming up.
One of the pipelines takes the uploaded file and transcodes it into
On 2019-05-23 10:58:54 (+0200), Louigi Verona wrote:
> There are several questions here.
>
> 1. Which tool to use for transcoding. Should it be SoX, or FFmpeg, or
> something else? A lot of the info out there seems to favor SoX, but a lot
> of that info is pretty old.
I'm currently maintaining sox
On Thu, May 23, 2019 at 2:59 AM Louigi Verona
wrote:
> Hey everyone!
>
> I need advice on resampling.
>
> To give you context, I am working at SoundCloud, and one of the current
> projects is to refactor the transcoding pipeline. And proper resampling
> tools is a question that keeps coming up.
>
"In terms of quality for resampling, this is the canonical information
source: http://src.infinitewave.ca/";
Yep, was looking at that. But would appreciate any additional insight,
since I am not entirely sure how to read that. For instance, if I compare
SoX to FFmpeg, yes, SoX looks way better in
The good news is that ffmpeg appears to include the soxr algorithm anyway.
On Thu, May 23, 2019 at 7:58 AM Louigi Verona
wrote:
> "In terms of quality for resampling, this is the canonical information
> source: http://src.infinitewave.ca/";
>
> Yep, was looking at that. But would appreciate any
Is this so? Or should it be specifically compiled with the SoX library?
Louigi Verona
https://louigiverona.com/
On Thu, May 23, 2019 at 4:39 PM Paul Davis
wrote:
> The good news is that ffmpeg appears to include the soxr algorithm anyway.
>
> On Thu, May 23, 2019 at 7:58 AM Louigi Verona
> wr
On Thu, May 23, 2019 at 8:41 AM Louigi Verona
wrote:
> Is this so? Or should it be specifically compiled with the SoX library?
>
> Louigi Verona
> https://louigiverona.com/
>
>
> On Thu, May 23, 2019 at 4:39 PM Paul Davis
> wrote:
>
>> The good news is that ffmpeg appears to include the soxr alg
Yep, I've seen this link. But this basically means it has to be compiled
with SoX, and then this algorithm has to be specifically invoked, right.
But by default it uses its own, I guess. So it still leaves us with a
choice - which algo to use?
David makes a good point from a maintenance POV, I won
On 2019-05-23 15:00, Louigi Verona wrote:
But this basically means it has to be compiled with SoX
Sort of. It needs to be built with soxr (The SoX Resampler library)
https://sourceforge.net/projects/soxr/files/
Cheers,
--
/bengan
___
Linux-audio-de
On Thu, 23 May 2019, Louigi Verona wrote:
One of the pipelines takes the uploaded file and transcodes it into an mp3. The
general idea is to convert the original file to wav, resample it to 44100, and
then finally convert it to mp3 using LAME.
There are several questions here.
1. Which tool to
On Thu, 23 May 2019 10:58:54 +0200
Louigi Verona wrote:
> 2. Does it make sense to resample to 44100 or to 48000?
AFAIR many soundcards and onboard solutions work with 48000 internally
and have to resample any 44100 source.
--
Thorsten Wilms
___
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