resampling mp3 files at a higher bitrate - users - Fedora Mailing-Lists

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resampling mp3 files at a higher bitrate

Newb question

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JD

Saturday, 31 July 2010 Sat, 31 Jul '10

11:31 p.m.

Greetings, I tried to re-sample an MP3 file from 64kbps to 320kbps : ffmpeg -i file.mp3 -ac 2 -b 320k new-file.mp3 but the resulting file always comes out at 64kbps. What's the trick to doing this right?

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Tim

Sunday, 1 August Sun, 1 Aug

12:47 a.m.

On Sat, 2010-07-31 at 21:31 -0700, JD wrote:

I tried to re-sample an MP3 file from 64kbps to 320kbps : ffmpeg -i file.mp3 -ac 2 -b 320k new-file.mp3 but the resulting file always comes out at 64kbps.

You have a syntax error -b for video bitrate setting -ab for audio bitrate setting What are you trying to gain? You can't make a lossy MPEG better by recompressing it at a higher bitrate. It's actually going to get worse, since it's going to get decoded, then another lossy recompression is going to happen. -- [tim@localhost ~]$ uname -r 2.6.27.25-78.2.56.fc9.i686 Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.

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Roberto Ragusa

2:56 a.m.

JD wrote:

Greetings, I tried to re-sample an MP3 file from 64kbps to 320kbps : ffmpeg -i file.mp3 -ac 2 -b 320k new-file.mp3 but the resulting file always comes out at 64kbps. What's the trick to doing this right?

Using -ab instead of -b. You *do* know that what you want to do is not really smart, right? :-) -- Roberto Ragusa mail at robertoragusa.it

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JD

9:32 a.m.

On 07/31/2010 10:47 PM, Tim wrote:

On Sat, 2010-07-31 at 21:31 -0700, JD wrote: > I tried to re-sample an MP3 file from 64kbps to 320kbps : > > ffmpeg -i file.mp3 -ac 2 -b 320k new-file.mp3 > > but the resulting file always comes out at 64kbps. You have a syntax error -b for video bitrate setting -ab for audio bitrate setting What are you trying to gain? You can't make a lossy MPEG better by recompressing it at a higher bitrate. It's actually going to get worse, since it's going to get decoded, then another lossy recompression is going to happen.

I see!! Thanks for the info!

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JD
Roberto Ragusa
Tim