Re: Fast(er) transcoding from aac to mp3.

2011-03-19 Thread James Cook
On Sat, 19 Mar 2011 00:06:23 +, you wrote: Looking back at my script I wrote back at Christmas when the iphone option stopped working and my programs started coming down in aac I seem to have a faster solution which works for me; time( ffmpeg -i

Re: Fast(er) transcoding from aac to mp3.

2011-03-19 Thread Charles Johnson
dinkypumpkin wrote: I don't remember if it's the same in Lucid, but in Ubuntu Maverick I just needed to install libavcodec-extra-52 (which replaces libavcodec-52 installed by default with ffmpeg) for MP3 support. Hmm, i'll look into that. Maybe i can shoehorn it into Lenny. Thanks CJ

Re: Fast(er) transcoding from aac to mp3.

2011-03-19 Thread Charles Johnson
dinkypumpkin wrote: Oops, forget that. I see that you're looking for a statically-linked ffmpeg. Well that's only due to Debian problems ('oldness' and licensing issues with mp3). I notice that i've got libavcodec51 installed, but it's done me no good at all. CJ

Fast(er) transcoding from aac to mp3.

2011-03-18 Thread bat guano
Hi I sometimes download BBC radio shows to listen on my mp3 player. It looks like I'm going to have to start transcoding them from aac to mp3. Using Ubuntu I did some tests to see just how long it takes to transcode these things. I downloaded a 3-hour show (Steve Wright in the Afternoon*) and

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread Ian Stirling
On 03/18/2011 12:52 PM, bat guano wrote: -acodec libmp3lame -ab 128k test1.mp3 Hmm. For some reason ffmpeg is not pulling in mp3lame codec when I compile. A test I did of time (ffmpeg -i You_and_Yours_-_16_03_2011_b00zf33w_default.aac -ab 128k test.wav; lame test.wav test.mp3) finished

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread James Cook
On Fri, 18 Mar 2011 12:52:02 +, you wrote: Hi I sometimes download BBC radio shows to listen on my mp3 player. It looks like I'm going to have to start transcoding them from aac to mp3. I just joined this list yesterday - so I don't know the context of this message - Has the BBC dropped MP3

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread dinkypumpkin
Not really comparing like-for-like, but with 2010 Macbook Pro (2.66 Ghz Core i7, 8Gb) and ffmpeg HEAD, transcoding a 3-hour program gives these numbers: real5m7.197s user4m56.078s sys 0m6.127s Just for kicks, in a 32-bit 1-CPU Ubuntu 10.10 VM (via VMWare Fusion) on the same machine

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread Ian Stirling
On 03/18/2011 03:50 PM, bat guano wrote: A test I did of time (ffmpeg -i You_and_Yours_-_16_03_2011_b00zf33w_default.aac -ab 128k test.wav; lame test.wav test.mp3) finished in 4:35 - this is on a core duo at 1.8GHz. So, 12* or so real-time. @ Ian

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread Shevek
On 18 March 2011 14:29, James Cook james.c...@bluewin.ch wrote: Does anyone know of a free AAC(ADTS) to AAC converter - to play on an ipod (yes I know). Better quality than AAC to MP3 conversion? No need to convert, just remux using ffmpeg and the -absf aac_adtstoasc option: ffmpeg -i

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread James Cook
On Fri, 18 Mar 2011 15:50:38 +, you wrote: Like this:- time ffmpeg -i filename.aac -f wav - | lame -b 128 - test3.mp3 To my surprise the above does work on windows/cygwin I have been using faad -w aacfile | lame ... up to now - for historical reasons - (SBR not implemented error)

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread James Cook
On Fri, 18 Mar 2011 18:54:03 +, you wrote: No need to convert, just remux using ffmpeg and the -absf aac_adtstoasc option: ffmpeg -i input.aac -vn -acodec copy -absf aac_adtstoasc output.mp4 The latest bundled ffmpeg in mplayer-win32 handles this:

Re: Fast(er) transcoding from aac to mp3.

2011-03-18 Thread Simon Crisp
Looking back at my script I wrote back at Christmas when the iphone option stopped working and my programs started coming down in aac I seem to have a faster solution which works for me; time( ffmpeg -i You_and_Yours_-_16_03_2011_b00zf33w_default.aac -map_meta_data