Hi Mortiz,

How do you know it's not converted or filtered? Wouldn't it be nice if you
showed us the error message (if you get one)? Or should we guess?
     I have checked the converted audio file info using Mediainfo binary.

Actually, please show us the complete console output
   Fmmpeg console output is provided below and the Mediainfo output.

console $ ./ffmpeg -i ~/Downloads/test_audio.aac -c:a copy  -bsf:a
aac_adtstoasc aac_try_with_bsf.aac
ffmpeg version 4.0.1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
  configuration: --pkg-config-flags=--static --enable-gpl --enable-libass
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
--enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
--enable-libx265 --enable-nonfree --enable-openssl
--enable-bsf=aac_adtstoasc
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
[aac @ 0x3d0c880] Estimating duration from bitrate, this may be inaccurate
Input #0, aac, from '/home/vkchlt0199/Downloads/test_audio.aac':
  Duration: 00:08:47.25, bitrate: 81 kb/s
    Stream #0:0: Audio: aac (LC), 16000 Hz, mono, fltp, 81 kb/s
File 'aac_try_with_bsf.aac' already exists. Overwrite ? [y/N] y
Output #0, adts, to 'aac_try_with_bsf.aac':
  Metadata:
    encoder         : Lavf58.12.100
    Stream #0:0: Audio: aac (LC), 16000 Hz, mono, fltp, 81 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help


size=    5245kB time=00:09:03.16 bitrate=  79.1kbits/s speed=8.46e+03x
video:0kB audio:5187kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 1.118535%

console $ mediainfo ~/Downloads/test_audio.aac
General
Complete name                            :
/home/vkchlt0199/Downloads/test_audio.aac
Format                                   : ADTS
Format/Info                              : Audio Data Transport Stream
File size                                : 5.12 MiB
Overall bit rate mode                    : Variable

Audio
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format version                           : Version 4
Format profile                           : LC
Bit rate mode                            : Variable
Channel(s)                               : 1 channel
Channel positions                        : Front: C
Sampling rate                            : 16.0 KHz
Frame rate                               : 15.625 fps (1024 spf)
Compression mode                         : Lossy
Stream size                              : 5.12 MiB (100%)

Console $ mediainfo aac_try_with_bsf.aac
General
Complete name                            : aac_try_with_bsf.aac
Format                                   : ADTS
Format/Info                              : Audio Data Transport Stream
File size                                : 5.12 MiB
Overall bit rate mode                    : Variable

Audio
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format version                           : Version 4
Format profile                           : LC
Bit rate mode                            : Variable
Channel(s)                               : 1 channel
Channel positions                        : Front: C
Sampling rate                            : 16.0 KHz
Frame rate                               : 15.625 fps (1024 spf)
Compression mode                         : Lossy
Stream size                              : 5.12 MiB (100%)

I am able to convert the aac audio file to m4a using below command, But for
my actual use case the this  wont help.

Console $$ ./ffmpeg -i ~/Downloads/test_audio.aac -c:a copy
aac_try_with_bsf.m4a
ffmpeg version 4.0.1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
  configuration: --pkg-config-flags=--static --enable-gpl --enable-libass
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
--enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
--enable-libx265 --enable-nonfree --enable-openssl
--enable-bsf=aac_adtstoasc
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
[aac @ 0x3ed47c0] Estimating duration from bitrate, this may be inaccurate
Input #0, aac, from '/home/vkchlt0199/Downloads/test_audio.aac':
  Duration: 00:08:47.25, bitrate: 81 kb/s
    Stream #0:0: Audio: aac (LC), 16000 Hz, mono, fltp, 81 kb/s
File 'aac_try_with_bsf.m4a' already exists. Overwrite ? [y/N] y
Output #0, ipod, to 'aac_try_with_bsf.m4a':
  Metadata:
    encoder         : Lavf58.12.100
    Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp,
81 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help

size=    5221kB time=00:09:03.16 bitrate=  78.7kbits/s speed=8.69e+03x
video:0kB audio:5245kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown


This is the expected output
#########################
Console $ mediainfo aac_try_with_bsf.m4a
General
Complete name                            : aac_try_with_bsf.m4a
Format                                   : MPEG-4
Format profile                           : Apple audio with iTunes info
Codec ID                                 : M4A  (isom/iso2)
File size                                : 5.10 MiB
Duration                                 : 9mn 3s
Overall bit rate mode                    : Variable
Overall bit rate                         : 78.7 Kbps
Encoded date                             : UTC 1904-01-01 00:00:00
Tagged date                              : UTC 1904-01-01 00:00:00
Writing application                      : Lavf58.12.100

Audio
ID                                       : 1
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 9mn 3s
Bit rate mode                            : Variable
Bit rate                                 : 78.2 Kbps
Maximum bit rate                         : 81.5 Kbps
Channel(s)                               : 2 channels
Channel(s)_Original                      : 1 channel
Channel positions                        : Front: C
Sampling rate                            : 16.0 KHz
Frame rate                               : 15.625 fps (1024 spf)
Compression mode                         : Lossy
Stream size                              : 5.07 MiB (99%)
Default                                  : Yes
Alternate group                          : 1
Encoded date                             : UTC 1904-01-01 00:00:00
Tagged date                              : UTC 1904-01-01 00:00:00



On Thu, Jul 12, 2018 at 3:59 PM, Moritz Barsnick <barsn...@gmx.net> wrote:

> On Thu, Jul 12, 2018 at 12:43:01 +0530, Mohammed Sha wrote:
> > But when i try below command the file is not getting converted or adding
> > the bitstream filter
> >
> > ./ffmpeg -i ~/Downloads/test_audio.aac -c:a copy  -bsf:a aac_adtstoasc
> > aac_try_with_bsf.aac
>
> How do you know it's not converted or filtered?
>
> Wouldn't it be nice if you showed us the error message (if you get
> one)? Or should we guess?
>
> Actually, please show us the complete console output.
>
> Moritz
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user@ffmpeg.org
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>
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>



-- 
Thanks & Regards
*Mohammed Sha Ebrahim*
VVDN Technologies Pvt.Ltd
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