[FFmpeg-trac] #7869(ffmpeg:new): Can't open an m4a file
FFmpeg
trac at avcodec.org
Thu Apr 25 20:40:50 EEST 2019
#7869: Can't open an m4a file
-------------------------------------+-------------------------------------
Reporter: luni-4 | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: git-
Keywords: | master
adts,m4a,aac | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Hi FFmpeg developers!
I've tried to convert the m4a file attached to this issue in this way:
{{{
ffmpeg -i adts_m4a_aac_no_stream.m4a sample.mp3
ffmpeg version N-47548-g8a3ed5a313 Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 8 (Ubuntu 8.3.0-6ubuntu1~18.10)
configuration: --disable-debug --disable-stripping --disable-libdrm
--disable-cuda --enable-avisynth --enable-fontconfig --enable-gmp
--enable-gnutls --enable-gpl --enable-ladspa --enable-libass --enable-
libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb
--enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-
libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-
libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-
libwebp --enable-libx264 --enable-libx265 --enable-libaom --enable-libxvid
--enable-shared --enable-version3
libavutil 56. 26.100 / 56. 26.100
libavcodec 58. 51.100 / 58. 51.100
libavformat 58. 27.102 / 58. 27.102
libavdevice 58. 7.100 / 58. 7.100
libavfilter 7. 48.100 / 7. 48.100
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
[aac @ 0x55830faeac00] Could not find codec parameters for stream 0
(Audio: aac, 0 channels, fltp): unspecified sample rate
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Input #0, aac, from 'adts_m4a_aac_no_stream.m4a':
Duration: N/A, bitrate: N/A
Stream #0:0: Audio: aac, 0 channels, fltp
Output #0, mp3, to 'sample.mp3':
Output file #0 does not contain any stream
}}}
I've increased the value of `analyzeduration` and `probesize`, but nothing
has changed.
The file can be opened and reproduced using `VLC`, so it isn't corrupted.
Thanks in advance for the reply!
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7869>
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