[FFmpeg-trac] #6601(avcodec:new): MP2 files are decoded with errors
FFmpeg
trac at avcodec.org
Sun Aug 20 13:28:18 EEST 2017
#6601: MP2 files are decoded with errors
---------------------------------+--------------------------------------
Reporter: koops | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: git-master
Keywords: mp2 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
---------------------------------+--------------------------------------
Summary of the bug:
How to reproduce:
{{{
% ffmpeg -i Common_Room.mp2 Common_Room.wav
ffmpeg version N-86994-g92da230
built with gcc 7.1.0 (GCC)
...
[mp2 @ 0000000001295920] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
...
1379 frames successfully decoded, 1 decoding errors
}}}
File is decoded successfully, but there are decoding errors.
Log:
{{{
ffmpeg started on 2017-08-20 at 13:02:39
Report written to "ffmpeg-20170820-130239.log"
Command line:
ffmpeg.exe -report -i Common_Room.mp2 Common_Room.wav
ffmpeg version N-86994-g92da230 Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 7.1.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-cuda --enable-
cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
--enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy
--enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-
libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma
--enable-zlib
libavutil 55. 74.100 / 55. 74.100
libavcodec 57.102.100 / 57.102.100
libavformat 57. 76.100 / 57. 76.100
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 99.100 / 6. 99.100
libswscale 4. 7.102 / 4. 7.102
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
Splitting the commandline.
Reading option '-report' ... matched as option 'report' (generate a
report) with argument '1'.
Reading option '-i' ... matched as input url with argument
'Common_Room.mp2'.
Reading option 'Common_Room.wav' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url Common_Room.mp2.
Successfully parsed a group of options.
Opening an input file: Common_Room.mp2.
[NULL @ 00000000010564a0] Opening 'Common_Room.mp2' for reading
[file @ 0000000001283e60] Setting default whitelist 'file,crypto'
[mp3 @ 00000000010564a0] Format mp3 probed with size=4096 and score=51
[mp3 @ 00000000010564a0] Skipping 0 bytes of junk at 0.
[mp3 @ 00000000010564a0] Before avformat_find_stream_info() pos: 0 bytes
read:65664 seeks:2 nb_streams:1
[mp3 @ 00000000010564a0] All info found
[mp3 @ 00000000010564a0] Estimating duration from bitrate, this may be
inaccurate
[mp3 @ 00000000010564a0] After avformat_find_stream_info() pos: 31744
bytes read:65664 seeks:2 frames:50
Input #0, mp3, from 'Common_Room.mp2':
Duration: 00:01:12.05, start: 0.000000, bitrate: 95 kb/s
Stream #0:0, 50, 1/14112000: Audio: mp2, 22050 Hz, stereo, s16p, 96
kb/s
Successfully opened the file.
Parsing a group of options: output url Common_Room.wav.
Successfully parsed a group of options.
Opening an output file: Common_Room.wav.
[file @ 00000000012a05a0] Setting default whitelist 'file,crypto'
Successfully opened the file.
Stream mapping:
Stream #0:0 -> #0:0 (mp2 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per
stream)
detected 12 logical cores
[graph_0_in_0_0 @ 00000000012e3b60] Setting 'time_base' to value '1/22050'
[graph_0_in_0_0 @ 00000000012e3b60] Setting 'sample_rate' to value '22050'
[graph_0_in_0_0 @ 00000000012e3b60] Setting 'sample_fmt' to value 's16p'
[graph_0_in_0_0 @ 00000000012e3b60] Setting 'channel_layout' to value
'0x3'
[graph_0_in_0_0 @ 00000000012e3b60] tb:1/22050 samplefmt:s16p
samplerate:22050 chlayout:0x3
[format_out_0_0 @ 00000000012e63e0] Setting 'sample_fmts' to value 's16'
[format_out_0_0 @ 00000000012e63e0] auto-inserting filter
'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter
'format_out_0_0'
[AVFilterGraph @ 000000000129f040] query_formats: 4 queried, 6 merged, 3
already done, 0 delayed
[auto_resampler_0 @ 00000000012e6940] [SWR @ 00000000012e6b20] Using s16p
internally between filters
[auto_resampler_0 @ 00000000012e6940] ch:2 chl:stereo fmt:s16p r:22050Hz
-> ch:2 chl:stereo fmt:s16 r:22050Hz
Output #0, wav, to 'Common_Room.wav':
Metadata:
ISFT : Lavf57.76.100
Stream #0:0, 0, 1/22050: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
22050 Hz, stereo, s16, 705 kb/s
Metadata:
encoder : Lavc57.102.100 pcm_s16le
[mp2 @ 0000000001295920] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[out_0_0 @ 00000000012e6200] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.
size= 6206kB time=00:01:12.04 bitrate= 705.6kbits/s speed= 922x
video:0kB audio:6206kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.001227%
Input file #0 (Common_Room.mp2):
Input stream #0:0 (audio): 1380 packets read (864596 bytes); 1379 frames
decoded (1588608 samples);
Total: 1380 packets (864596 bytes) demuxed
Output file #0 (Common_Room.wav):
Output stream #0:0 (audio): 1379 frames encoded (1588608 samples); 1379
packets muxed (6354432 bytes);
Total: 1379 packets (6354432 bytes) muxed
1379 frames successfully decoded, 1 decoding errors
[AVIOContext @ 00000000012e0680] Statistics: 4 seeks, 28 writeouts
[AVIOContext @ 0000000001057440] Statistics: 897492 bytes read, 2 seeks
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6601>
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