I failed to convert DRM protected m4p files bought from iTunes years ago. Apparently, from what I read on the forum, this used to work.
ffprobe:
nput #0, mov,mp4,m4a,3gp,3g2,mj2, from '01 Meds (Featuring Alison Mosshart).m4p': Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A mp42isom creation_time : 2006-03-02T03:01:35.000000Z iTunNORM : 00001A4A 00001C50 0000B942 0000CEBE 0002634C 00024ADC 00008000 00008000 0000CFA1 0000C535 tool : ??� title : Meds (Featuring Alison Mosshart) artist : Placebo album : Meds genre : Rock track : 1/13 disc : 1/1 date : 2006-03-14T08:00:00Z account_id : copyright : ℗ 2006 The copyright in this sound recording is owned by Virgin Records Ltd rating : 0 album_artist : Placebo account_type : 0 media_type : 1 purchase_date : 2012-06-22 17:21:52 Duration: 00:02:55.47, start: 0.000000, bitrate: 137 kb/s Stream #0:0(und): Audio: aac (LC) (drms / 0x736D7264), 44100 Hz, stereo, fltp, 127 kb/s (default) Metadata: creation_time : 2006-03-02T03:01:35.000000Z handler_name : soun Stream #0:1: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 600x600 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc (attached pic)ffmpeg -i input.m4p output.mp3
Errors:
[aac @ 0x5578fc676740] Reserved bit set.
[aac @ 0x5578fc676740] TNS filter order 26 is greater than maximum 12.
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] channel element 2.4 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] channel element 2.10 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] Reserved bit set.
[aac @ 0x5578fc676740] Number of scalefactor bands in group (51) exceeds limit (49).
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] channel element 3.8 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 0x5578fc676740] Inconsistent channel configuration.
[aac @ 0x5578fc676740] get_buffer() failed
Error while decoding stream #0:0: Invalid argument
[aac @ 0x5578fc676740] Number of bands (7) exceeds limit (5).
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] channel element 2.15 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 0x5578fc676740] Inconsistent channel configuration.
[aac @ 0x5578fc676740] get_buffer() failed
Error while decoding stream #0:0: Invalid argument
[aac @ 0x5578fc676740] channel element 2.4 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] Prediction is not allowed in AAC-LC.
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] Sample rate index in program config element does not match the sample rate index configured by the container.
[aac @ 0x5578fc676740] Too large remapped id is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[aac @ 0x5578fc676740] If you want to help, upload a sample of this file to ftp:// and contact the ffmpeg-devel mailing list. ()
Error while decoding stream #0:0: Not yet implemented in FFmpeg, patches welcome
[aac @ 0x5578fc676740] Pulse tool not allowed in eight short sequence.
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0x5578fc676740] SBR was found before the first channel element.
[aac @ 0x5578fc676740] Reserved bit set.
[aac @ 0x5578fc676740] Prediction is not allowed in AAC-LC.
Error while decoding stream #0:0: Invalid data found when processing input
