[FFmpeg-trac] #7273(undetermined:new): Exported AAC does not work properly
FFmpeg
trac at avcodec.org
Sat Jun 30 17:43:56 EEST 2018
#7273: Exported AAC does not work properly
-------------------------------------+-------------------------------------
Reporter: DriverX | Owner:
Type: defect | Status: new
Priority: important | Component:
Version: unspecified | undetermined
Keywords: aac | Resolution:
regression | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by DriverX):
I compiled and tested this with the current git head.
The output when I convert a file into AAC:
{{{
ffmpeg -v debug -i in.flac -acodec aac -b:a 384k out.aac
:(
ffmpeg version N-91398-gd08d4a8c73 Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 8.1.1 (GCC) 20180531
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-avresample --enable-fontconfig --enable-gmp --enable-
gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray
--enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-libiec61883 --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-libvidstab
--enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid
--enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-
version3
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.104 / 58. 20.104
libavformat 58. 17.101 / 58. 17.101
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 25.100 / 7. 25.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with
argument 'debug'.
Reading option '-i' ... matched as input url with argument 'in.flac'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec
('copy' to copy stream)) with argument 'aac'.
Reading option '-b:a' ... matched as option 'b' (video bitrate (please use
-b:v)) with argument '384k'.
Reading option 'out.aac' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url in.flac.
Successfully parsed a group of options.
Opening an input file: in.flac.
[NULL @ 0x55950e7cfb40] Opening 'in.flac' for reading
[file @ 0x55950e7d0640] Setting default whitelist 'file,crypto'
[flac @ 0x55950e7cfb40] Format flac probed with size=2048 and score=100
[flac @ 0x55950e7cfb40] Before avformat_find_stream_info() pos: 86 bytes
read:32768 seeks:0 nb_streams:1
[flac @ 0x55950e7cfb40] All info found
[flac @ 0x55950e7cfb40] After avformat_find_stream_info() pos: 54272 bytes
read:65536 seeks:0 frames:1
Input #0, flac, from 'in.flac':
Duration: 00:57:47.26, start: 0.000000, bitrate: 1626 kb/s
Stream #0:0, 1, 1/48000: Audio: flac, 48000 Hz, 5.1(side), s16
Successfully opened the file.
Parsing a group of options: output url out.aac.
Applying option acodec (force audio codec ('copy' to copy stream)) with
argument aac.
Applying option b:a (video bitrate (please use -b:v)) with argument 384k.
Successfully parsed a group of options.
Opening an output file: out.aac.
[file @ 0x55950e7fb340] Setting default whitelist 'file,crypto'
Successfully opened the file.
detected 4 logical cores
Stream mapping:
Stream #0:0 -> #0:0 (flac (native) -> aac (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per
stream)
Last message repeated 4 times
[graph_0_in_0_0 @ 0x55950e8877c0] Setting 'time_base' to value '1/48000'
[graph_0_in_0_0 @ 0x55950e8877c0] Setting 'sample_rate' to value '48000'
[graph_0_in_0_0 @ 0x55950e8877c0] Setting 'sample_fmt' to value 's16'
[graph_0_in_0_0 @ 0x55950e8877c0] Setting 'channel_layout' to value
'0x60f'
[graph_0_in_0_0 @ 0x55950e8877c0] tb:1/48000 samplefmt:s16
samplerate:48000 chlayout:0x60f
[format_out_0_0 @ 0x55950e887dc0] Setting 'sample_fmts' to value 'fltp'
[format_out_0_0 @ 0x55950e887dc0] Setting 'sample_rates' to value
'96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000|7350'
[format_out_0_0 @ 0x55950e887dc0] auto-inserting filter 'auto_resampler_0'
between the filter 'Parsed_anull_0' and the filter 'format_out_0_0'
[AVFilterGraph @ 0x55950e880800] query_formats: 4 queried, 6 merged, 3
already done, 0 delayed
[auto_resampler_0 @ 0x55950e88ab40] [SWR @ 0x55950e88b040] Using s16p
internally between filters
[auto_resampler_0 @ 0x55950e88ab40] ch:6 chl:5.1(side) fmt:s16 r:48000Hz
-> ch:6 chl:5.1(side) fmt:fltp r:48000Hz
[aac @ 0x55950e7d7b00] Using a PCE to encode channel layout
Output #0, adts, to 'out.aac':
Metadata:
encoder : Lavf58.17.101
Stream #0:0, 0, 1/48000: Audio: aac (LC), 48000 Hz, 5.1(side), fltp
(16 bit), delay 1024, 384 kb/s
Metadata:
encoder : Lavc58.20.104 aac
[NULL @ 0x55950e7d1480] dropping low score -39 frame header from offset
7452 to 15662
[NULL @ 0x55950e7d1480] dropping low score -39 frame header from offset
18664 to 21583
[NULL @ 0x55950e7d1480] dropping low score -39 frame header from offset
2045 to 17809
[NULL @ 0x55950e7d1480] dropping low score -59 frame header from offset
12830 to 18432
[NULL @ 0x55950e7d1480] dropping low score -45 frame header from offset
3096 to 16319
[flac @ 0x55950e7cfb40] first_dts 0 not matching first dts 166391808 (pts
166391808, duration 4096) in the queue
[out_0_0 @ 0x55950e888900] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.
size= 163837kB time=00:57:47.26 bitrate= 387.1kbits/s speed=36.3x
video:0kB audio:162726kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.682780%
Input file #0 (in.flac):
Input stream #0:0 (audio): 40632 packets read (705031862 bytes); 40632
frames decoded (166428672 samples);
Total: 40632 packets (705031862 bytes) demuxed
Output file #0 (out.aac):
Output stream #0:0 (audio): 162528 frames encoded (166428672 samples);
162529 packets muxed (166631336 bytes);
Total: 162529 packets (166631336 bytes) muxed
40632 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x55950e7fb4c0] Statistics: 0 seeks, 640 writeouts
[aac @ 0x55950e7d7b00] Qavg: 232.956
[AVIOContext @ 0x55950e7d8a80] Statistics: 705031948 bytes read, 0 seeks
}}}
If I reproduce the file with ffplay, from the beginning it works fine.
Instead if I reproduce the file by specifing -ss in ffplay I get this
error and no sound is played:
{{{
ffplay -ss 0:2:0.000 out.aac
:(
ffplay version N-91398-gd08d4a8c73 Copyright (c) 2003-2018 the FFmpeg
developers
built with gcc 8.1.1 (GCC) 20180531
configuration: --prefix=/usr --disable-debug --disable-static --disable-
stripping --enable-avresample --enable-fontconfig --enable-gmp --enable-
gnutls --enable-gpl --enable-ladspa --enable-libass --enable-libbluray
--enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-libiec61883 --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-libvidstab
--enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid
--enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-
version3
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.104 / 58. 20.104
libavformat 58. 17.101 / 58. 17.101
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 25.100 / 7. 25.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[aac @ 0x7f4a0c000b80] Estimating duration from bitrate, this may be
inaccurate
Input #0, aac, from 'out.aac':
Duration: 01:19:13.09, bitrate: 282 kb/s
Stream #0:0: Audio: aac (LC), 48000 Hz, 6 channels, fltp, 388 kb/s
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated
Last message repeated 684 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2096 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 1803 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2153 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2125 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2178 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2159 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2091 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2108 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2159 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2167 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2173 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2196 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2189 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2157 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2153 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2152 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2181 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2103 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2105 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2182 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2191 times
[aac @ 0x7f4a0c2528c0] channel element 0.1 is not allocated f=0/0
Last message repeated 2233 times
}}}
If I convert a 2.0 track instead of a 5.1 there are no issues.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7273#comment:4>
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