Audo test mp4 file
I wonder if somone could kindly attach, or point me to a link to an *audio* mp4 file so that i can test to see if my player can handle it? Regards, CJ ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Experimental update to make m4a audio from aac
On 15 March 2011 00:09, Nick Ludlam n...@recoil.org wrote: To this end, I've committed my changes and pushed them to https://github.com/nickludlam/get_iplayer . If anyone has a chance to test, it would be helpful. Please make sure you have a very recent build of ffmpeg from the git repo, NOT 0.6.1. I've got a git build of ffmpeg. I'd like to test making a Windows installer. Has anyone here tried? The make_nsis.sh file talks about my needing a tarball of the perl stuff. Any pointers gratefully received. -R ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Audo test mp4 file
Nick Ludlam wrote:
On 15 Mar 2011, at 10:58, Charles Johnson wrote:
btw, i noticed that it looks like libfaac support is disabled by default in
ffmpeg HEAD. Is this true and is it relevant?:
--enable-libfaac enable FAAC support via libfaac [no]
No, this isn't an issue for us, as we're simply unwrapping the existing aac encode from
inside the flash wrapper, and re-wrapping it as an mp4/m4a file. We don't actually make
the aac itself. If you look at the output from ffmpeg -formats, the important
lines will be:
E mp4 MP4 format
DE flv FLV format
This means it can encode the mp4 format, and both decode and encode Flash (we
care about decoding only).
Nick
Thanks for that Nick. In my case though, mp4 is not useable, so i need
to transcode aac to mp3. Given Linux rtmpdump and ffmpeg, can you say
what my command should be? At the moment, my script is as below, but of
course this leaves me with aac:
mode_du_jour=flashaaclow
get_iplayer --mode=${mode_du_jour} --flvstreamer=/usr/local/bin/rtmpdump
--get ${@}
CJ
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Re: Audo test mp4 file
On 15 Mar 2011, at 11:51, Charles Johnson wrote:
Nick Ludlam wrote:
On 15 Mar 2011, at 10:58, Charles Johnson wrote:
btw, i noticed that it looks like libfaac support is disabled by default in
ffmpeg HEAD. Is this true and is it relevant?:
--enable-libfaac enable FAAC support via libfaac [no]
No, this isn't an issue for us, as we're simply unwrapping the existing aac
encode from inside the flash wrapper, and re-wrapping it as an mp4/m4a file.
We don't actually make the aac itself. If you look at the output from
ffmpeg -formats, the important lines will be:
E mp4 MP4 format
DE flv FLV format
This means it can encode the mp4 format, and both decode and encode Flash
(we care about decoding only).
Nick
Thanks for that Nick. In my case though, mp4 is not useable, so i need to
transcode aac to mp3. Given Linux rtmpdump and ffmpeg, can you say what my
command should be? At the moment, my script is as below, but of course this
leaves me with aac:
mode_du_jour=flashaaclow
get_iplayer --mode=${mode_du_jour} --flvstreamer=/usr/local/bin/rtmpdump
--get ${@}
When you say the mp4 is not usable, do you mean it's corrupt, or that you can't
use it with your playback needs? What version of ffmpeg are you using? Can you
paste the verbose output of get_iplayer running?
Nick
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Re: Audo test mp4 file
On 15 Mar 2011, at 12:17, Charles Johnson wrote: Nick Ludlam wrote: When you say the mp4 is not usable, do you mean it's corrupt, or that you can't use it with your playback needs? I mean my player won't play mp4. I'm using git HEAD ffmpeg, and afaik, the penultimate version of get_iplayer Do you mean the official release, when you say penultimate? Mine isn't officially on infradead, it's in my project fork on github. You can download my amended get_iplayer script here: https://github.com/nickludlam/get_iplayer/raw/master/get_iplayer Then try getting a program with any of the aac audio modes. Nick ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Audo test mp4 file
Nick Ludlam wrote: On 15 Mar 2011, at 12:17, Charles Johnson wrote: Nick Ludlam wrote: When you say the mp4 is not usable, do you mean it's corrupt, or that you can't use it with your playback needs? I mean my player won't play mp4. I'm using git HEAD ffmpeg, and afaik, the penultimate version of get_iplayer Do you mean the official release, when you say penultimate? Yes Nick, but i think wires are getting crossed here: 'bat guano' has just pointed me to an mp4 audio demo file and it doesn't work on my player. Therefore any enhancements to transcode to mp4 are useless for me unfortunately. Do you know the command i should use now to produce mp3? CJ ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
RE: Audo test mp4 file
Do you know the command i should use now to produce mp3? CJ Hi CJ It seems that BBC are not sending mp3 streams now. So download the aac file and convert it to mp3 with a program such as WinFF. From here:- http://winff.org/html_new/ If you think that a show is available as mp3 then use --mode=flashaudio. But if it's not available as mp3 it will probably give you an error like this:- INFO: No specified modes (flashaudio) available for this programme with version 'default' (try using --modes=flashaaclow,flashaacstd,rtspaaclow,rtspaacstd,wma) ERROR: Failed to record ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Audo test mp4 file
bat guano wrote: Do you know the command i should use now to produce mp3? CJ Hi CJ It seems that BBC are not sending mp3 streams now. So download the aac file and convert it to mp3 with a program such as WinFF. From here:- http://winff.org/html_new/ If you think that a show is available as mp3 then use --mode=flashaudio. But if it's not available as mp3 it will probably give you an error like this:- INFO: No specified modes (flashaudio) available for this programme with version 'default' (try using --modes=flashaaclow,flashaacstd,rtspaaclow,rtspaacstd,wma) ERROR: Failed to record bg, Thanks - yes i'm aware of that- i've been following this list closely for several days. I'm using Debian Linux, which already has 'issues' with lame. Nonetheless, i have libmp3lame installed, although ffmpeg is not behaving as if i have: goose@p10:/tmp$ ./ffmpeg -i f.aac x.mp3 FFmpeg version git-9f8f62d, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 14 2011 23:32:24 with gcc 4.3.2 configuration: --enable-static --disable-shared --extra-libs=-static --extra-cflags=--static libavutil50. 39. 0 / 50. 39. 0 libavcodec 52.114. 0 / 52.114. 0 libavformat 52.103. 0 / 52.103. 0 libavdevice 52. 2. 3 / 52. 2. 3 libavfilter 1. 76. 0 / 1. 76. 0 libswscale0. 12. 0 / 0. 12. 0 [aac @ 0x9c23c80] max_analyze_duration reached [aac @ 0x9c23c80] Estimating duration from bitrate, this may be inaccurate Input #0, aac, from 'f.aac': Duration: 00:30:20.73, bitrate: 47 kb/s Stream #0.0: Audio: aac, 44100 Hz, 2 channels (FC), s16, 47 kb/s Output #0, mp3, to 'x.mp3': Stream #0.0: Audio: [0][0][0][0] / 0x, 44100 Hz, 2 channels, s16, 64 kb/s Stream mapping: Stream #0.0 - #0.0 Encoder (codec id 86017) not found for output stream #0.0 == CJ ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
RE: Audo test mp4 file
goose@p10:/tmp$ ./ffmpeg -i f.aac x.mp3 FFmpeg version git-9f8f62d, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 14 2011 23:32:24 with gcc 4.3.2 configuration: --enable-static --disable-shared --extra-libs=-static --extra-cflags=--static Encoder (codec id 86017) not found for output stream #0.0 == CJ Hi CJ It looks as though you have compiled ffmpeg without libmp3lame support. I think that one of your config options should be --enable-libmp3lame. In the meantime, if you have lame installed on your system you can probably use it like this:- ffmpeg -i filename.aac -f wav - | lame -b 64 - output.mp3 ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Audo test mp4 file
bat guano wrote: goose@p10:/tmp$ ./ffmpeg -i f.aac x.mp3 FFmpeg version git-9f8f62d, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 14 2011 23:32:24 with gcc 4.3.2 configuration: --enable-static --disable-shared --extra-libs=-static --extra-cflags=--static Encoder (codec id 86017) not found for output stream #0.0 == CJ Hi CJ It looks as though you have compiled ffmpeg without libmp3lame support. I think that one of your config options should be --enable-libmp3lame. In the meantime, if you have lame installed on your system you can probably use it like this:- ffmpeg -i filename.aac -f wav - | lame -b 64 - output.mp3 Thanks - i'm just working on that as we speak, and yes, the pipe works for me CJ ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Audo test mp4 file
I've tried this and it works fine for me. The aac/mp4 files created are tagged correctly with AtomicParsley and report fine in iTunes as well. The files can be edited in Fission and retain the tags when saved which is another bonus when I need to remove the start and end of the recordings. I used your ffmpeg from the brew header and your head from your repository and it worked fine for the programmes I tested - Paul Temple and 2025. In addition, if anyone does want to record 2025 with get_iplayer, get_iplayer fails when the program to search for is all numeric; it thinks it's an index and not a programme name. You need to make it non number and the easiest way is to use a regexp for the name. e.g. I use 'get_iplayer 2[0]25' and it works. Great work, and at last I can get rid of MP3 recordings. Jimmy On 15 Mar 2011, at 12:25, Nick Ludlam wrote: On 15 Mar 2011, at 12:17, Charles Johnson wrote: Nick Ludlam wrote: When you say the mp4 is not usable, do you mean it's corrupt, or that you can't use it with your playback needs? I mean my player won't play mp4. I'm using git HEAD ffmpeg, and afaik, the penultimate version of get_iplayer Do you mean the official release, when you say penultimate? Mine isn't officially on infradead, it's in my project fork on github. You can download my amended get_iplayer script here: https://github.com/nickludlam/get_iplayer/raw/master/get_iplayer Then try getting a program with any of the aac audio modes. Nick ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: .aac splitter?
On 11 Mar 2011, at 11:26, Dave F. wrote: Hi Can anyone recommend an aac splitter that firstly works, secondly is fairly user friendly? If you have a Mac, then I can recommend Fission by RogueAmoeba. It can edit both MP3 and MP4/aac files and saves the changes without re-encoding the whole stream so it is much faster, and the quality doesn't change. I don't want to convert them, just cut them into smaller chunks. I came across this one, but haven't used it yet. I thought I'd ask for advice here first: http://www.008soft.com/aac-to-wav.htm Thanks in advance Dave F. ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer Jimmy Aitken jimmy.ait...@gmail.com ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
