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 <[email protected]> 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
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> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
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> [email protected] with subject "unsubscribe".
>
--
Thanks & Regards
*Mohammed Sha Ebrahim*
VVDN Technologies Pvt.Ltd
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