Fixing mp3 44.1 to 48k

[Gareth Magennis]

Hi,

I have a long (8 hour) mp3 that is too slow by the ratio 44.1/48 due to an
error editing the source material.

What is the best way to speed up this mp3?


Cheers,


Gareth.

[Trevor]

On 28/10/2015 7:43 PM, Gareth Magennis wrote:
> Hi,
> I have a long (8 hour) mp3 that is too slow by the ratio 44.1/48 due to
> an error editing the source material.
>
> What is the best way to speed up this mp3?
>

Try http://www.voxengo.com/product/r8brain/

You can easily change file sample rate Vs playback rate.

Many DAW's will do this also, but I'll assume yours doesn't or you
probably wouldn't ask.

Trevor.

[Gareth Magennis]

"Trevor" wrote in message ...

On 28/10/2015 7:43 PM, Gareth Magennis wrote:
> Hi,
> I have a long (8 hour) mp3 that is too slow by the ratio 44.1/48 due to
> an error editing the source material.
>
> What is the best way to speed up this mp3?
>

Try http://www.voxengo.com/product/r8brain/

You can easily change file sample rate Vs playback rate.

Many DAW's will do this also, but I'll assume yours doesn't or you
probably wouldn't ask.

Trevor.





OK, I've found a way to do it now in the DAW pre mp3 conversion.

Was trying all sorts of stuff last night but it wasn't doing what I wanted.
(Rendering to WAV only resulted in a 28 minute file)



Cheers,


Gareth.

[Scott Dorsey]

Gareth Magennis > wrote:
>
>I have a long (8 hour) mp3 that is too slow by the ratio 44.1/48 due to an
>error editing the source material.
>
>What is the best way to speed up this mp3?

Your editing software probably has a function which allows you to change
the sample rate in the file without actually resampling the data. That
is what I'd do.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Peter Larsen[_3_]]

On 28-10-2015 10:15, Gareth Magennis wrote:

> OK, I've found a way to do it now in the DAW pre mp3 conversion.

> Was trying all sorts of stuff last night but it wasn't doing what I
> wanted. (Rendering to WAV only resulted in a 28 minute file)

8 hours to a .wav ... some software gives up at 2 gigabytes. Or at 4
gigabytes, beyond that only broadcast wave applies. Stereo or mono?

> Gareth.

Kind regards

Peter Larsen

[John Williamson]

On 28/10/2015 12:34, Peter Larsen wrote:
> On 28-10-2015 10:15, Gareth Magennis wrote:
>
>> OK, I've found a way to do it now in the DAW pre mp3 conversion.
>
>> Was trying all sorts of stuff last night but it wasn't doing what I
>> wanted. (Rendering to WAV only resulted in a 28 minute file)
>
> 8 hours to a .wav ... some software gives up at 2 gigabytes. Or at 4
> gigabytes, beyond that only broadcast wave applies. Stereo or mono?
>
Easy enough to split an mp3 into one hour segments in just about any DAW
without quality loss.


--
Tciao for Now!

John.

[Gareth Magennis]

"Scott Dorsey" wrote in message ...

Gareth Magennis > wrote:
>
>I have a long (8 hour) mp3 that is too slow by the ratio 44.1/48 due to an
>error editing the source material.
>
>What is the best way to speed up this mp3?

Your editing software probably has a function which allows you to change
the sample rate in the file without actually resampling the data. That
is what I'd do.
--scott


--

That's what I did. (Wavelab 6) Bit of a "Doh!" forehead slap when I
realised how simple that should have been.

Got caught up trying to render to WAV and then re-importing. Just
wouldn't render to WAV.



Gareth.

[Gareth Magennis]

"Peter Larsen" wrote in message
k...

On 28-10-2015 10:15, Gareth Magennis wrote:

> OK, I've found a way to do it now in the DAW pre mp3 conversion.

> Was trying all sorts of stuff last night but it wasn't doing what I
> wanted. (Rendering to WAV only resulted in a 28 minute file)

8 hours to a .wav ... some software gives up at 2 gigabytes. Or at 4
gigabytes, beyond that only broadcast wave applies. Stereo or mono?

> Gareth.

Kind regards

Peter Larsen



I usually record Stereo WAV, about 10Gb per 8 hours. Adobe Audition splits
it into 3 x 4Gb/4Gb/ 2Gb WAVs with no losses at all.
I stitch them together in Wavelab6 (montage mode) then render to mp3.
Not usually any problems at all.

Wasn't able to record on the laptop on this occasion but got a direct to mp3
on a USB stick recording from the Yamaha LS9 instead.
At least I got a recording.

It was converting this to WAVs that wouldn't work properly, and I messed up
the sampling rates as well converting to RAW/PCM instead.

Turned out the Wavelab montage can just be switched to run at a different
rate without changing any data at all.


Cheers,

Gareth.