[FFmpeg-user] Help with Broken Audio Download Please.

[Andy Furniss]

Budge wrote:

> [aac @ 0xa62d80] Error decoding AAC frame header.
> [aac @ 0xa61800] Estimating duration from bitrate, this may be inaccurate
> Input #0, aac, from
> 'Composer_of_the_Week_-_Carl_Philipp_Emmanuel_Bach_1714-1788_1._The_Belligerent_Flautist.mp3':
>    Metadata:
>      encoder         : Lavf53.24.2
>      artist          : BBC Radio 4
>      album           : Composer_of_the_Week - Carl_Ph
>      track           : 1
>      comment         : Tagged with EasyTAG
>      title           : of the Week - Carl Philipp Emm
>      date            : 2011
>      genre           : Other
>    Duration: 01:11:26.78, bitrate: 190 kb/s
>      Stream #0:0: Audio: aac (LC), 44100 Hz, stereo, fltp, 190 kb/s
> File
> 'Composer_of_the_Week_-_Carl_Philipp_Emmanuel_Bach_1714-1788_1._The_Belligerent_Flautist.m4a'
> already exists. Overwrite ? [y/N] y
> [ipod @ 0xa75100] Codec for stream 0 does not use global headers but
> container format requires global headers
> Output #0, ipod, to
> 'Composer_of_the_Week_-_Carl_Philipp_Emmanuel_Bach_1714-1788_1._The_Belligerent_Flautist.m4a':
>    Metadata:
>      genre           : Other
>      artist          : BBC Radio 4
>      album           : Composer_of_the_Week - Carl_Ph
>      track           : 1
>      comment         : Tagged with EasyTAG
>      title           : of the Week - Carl Philipp Emm
>      date            : 2011
>      encoder         : Lavf56.40.101
>      Stream #0:0: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 190 kb/s
> Stream mapping:
>    Stream #0:0 -> #0:0 (copy)
> Press [q] to stop, [?] for help
> [ipod @ 0xa75100] Malformed AAC bitstream detected: use the audio
> bitstream filter 'aac_adtstoasc' to fix it ('-bsf:a aac_adtstoasc'
> option with ffmpeg)

The errors may mess things up, but as the input is identified as aac,
try -c copy with what it says to do above ...

ffmpeg -i input-file -c copy -bsf:a aac_adtstoasc outfile.m4a