Re: Format of BBC Radio 4 .m4a files

2015-09-14 Thread RS
Thanks for the suggestion. I didn't manage to install the mp4file --optimize program in Ubuntu, but I did find a similar program for Windows. mp4box -hint It splits the file into 500ms segments and writes the header information at the beginning of each segment. I had a 45min program which

Re: Format of BBC Radio 4 .m4a files

2015-09-12 Thread Jim web
In article , Jon Davies wrote: > On 9 September 2015 at 12:28, Jim web wrote: > > Why not flac? > because as others have pointed out, the raw data downloaded from the bbc > is aac.

Re: Format of BBC Radio 4 .m4a files

2015-09-12 Thread michael norman
On 11/09/15 18:37, Jim web wrote: In article , Jon Davies wrote: On 9 September 2015 at 12:28, Jim web wrote: Why not flac? because as others have pointed out, the raw data

Re: Format of BBC Radio 4 .m4a files

2015-09-12 Thread Jim web
In article <55f405d2.5070...@gmail.com>, michael norman wrote: > If you have mp4a files which will not play on a chosen device then you > need to either find a device that will play them or save them and > transcode them into a format your existing device will play

Re: Format of BBC Radio 4 .m4a files

2015-09-11 Thread Jon Davies
On 9 September 2015 at 11:05, RS wrote: > If I try to play the BBC Radio 4 .m4a files in the Longevity player the > player freezes for about 4min. I recall hearing about similar behaviour with someone's mp3 player - it appeared that the player was reading through the entire

Re: Format of BBC Radio 4 .m4a files

2015-09-09 Thread Dave Liquorice
On Wed, 09 Sep 2015 11:42:19 +0100, David Cantrell wrote: >> get_iplayer could do with a FLAC/"Apple Lossless" output for maximum >> quality. > > There's not much point, because only lossy recordings are available on > iPlayer. As that stands correct but chaining lossy codecs is not a Good

Re: Format of BBC Radio 4 .m4a files

2015-09-09 Thread Jim web
In article <68D324A8D5C641BF85D17D95E4ECF311@RJCDESK>, RS wrote: > Does anyone know what software the BBC uses to encode its .m4a files? for all recent 'radio' files I've checked ffprobe tells me: aac (LC) (mp4a/0x6134706D) 48000 Hz stereo fltp Major brand M4A encoder

Re: Format of BBC Radio 4 .m4a files

2015-09-09 Thread Roger Rarebit
m4a play fine on all my apple iOS devices and Walkman Hires player - although sometimes I've noticed a little distortion on the Walkman. Simply convert to MP3 at high bitrate, it'll give pretty much the same quality: --aactomp3 --mp3vbr 0 get_iplayer could do with a FLAC/"Apple Lossless"

Re: Format of BBC Radio 4 .m4a files

2015-09-09 Thread David Cantrell
On 09/09/2015 11:35, Roger Rarebit wrote: get_iplayer could do with a FLAC/"Apple Lossless" output for maximum quality. There's not much point, because only lossy recordings are available on iPlayer. -- David Cantrell | top google result for "topless karaoke murders" The test of the