Opened 5 years ago
Closed 5 years ago
#7869 closed defect (duplicate)
Can't open an m4a file
Reported by: | luni-4 | Owned by: | |
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Priority: | important | Component: | avformat |
Version: | git-master | Keywords: | aac |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | yes |
Description
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!
Attachments (1)
Change History (4)
by , 5 years ago
Attachment: | adts_m4a_aac_no_stream.m4a added |
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comment:1 by , 5 years ago
Analyzed by developer: | set |
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Component: | ffmpeg → avformat |
Keywords: | adts m4a removed |
Priority: | normal → important |
Reproduced by developer: | set |
Status: | new → open |
Looks like a regression since e023334661e6eafcf638ffc2a780fd495fc25ec9
The file is not an m4a, it's a raw adts aac file, but libavformat figured that on its own just fine.
comment:2 by , 5 years ago
Oh, great. Out of curiosity, why the phone has saved that as a m4a file format?
comment:3 by , 5 years ago
Resolution: | → duplicate |
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Status: | open → closed |
I believe this is a duplicate of ticket #7271.
An m4a file with the ADTS format an AAC codec inside