[FFmpeg-user] ffmpeg not seeing past junk in ogg files

[Silent Strider]

Am 27.12.2019 um 16:51 schrieb Carl Eugen Hoyos:
>
>> Am 27.12.2019 um 15:16 schrieb Silent Strider <silent.strider at gmx.de>:
>>
>> ffprobe version git-2019-12-26-b0d0d7e Copyright (c) 2007-2019 the
>> FFmpeg developers
>>    built with gcc 9.2.1 (GCC) 20191125
>>    configuration: --enable-gpl --enable-version3 --enable-sdl2
>> --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
>> --enable-libdav1d --enable-libbluray --enable-libfreetype
>> --enable-libmp3lame --enable-libopencore-amrnb
>> --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus
>> --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora
>> --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp
>> --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg
>> --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab
>> --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
>> --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
>> --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
>> --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
>> --enable-amf
>>    libavutil      56. 37.100 / 56. 37.100
>>    libavcodec     58. 65.100 / 58. 65.100
>>    libavformat    58. 35.101 / 58. 35.101
>>    libavdevice    58.  9.101 / 58.  9.101
>>    libavfilter     7. 69.101 /  7. 69.101
>>    libswscale      5.  6.100 /  5.  6.100
>>    libswresample   3.  6.100 /  3.  6.100
>>    libpostproc    55.  6.100 / 55.  6.100
>> ogg_padded: Invalid data found when processing input
> Does it work with the following command line?
> $ ffmpeg -f ogg -i ogg_padded
Interestingly, it does.  There is no information about skipped bytes at
all though:
[ogg @ 000002403d7ebf40] 25 bytes of comment header remain
Input #0, ogg, from 'ogg_padded':
   Duration: 00:00:09.62, start: 0.000000, bitrate: 41 kb/s
     Stream #0:0: Audio: vorbis, 48000 Hz, mono, fltp, 70 kb/s

Even in debug log level it doesn't tell:
[ogg @ 0000019ea2ddc040] Opening 'ogg_padded' for reading
[file @ 0000019ea2ddc940] Setting default whitelist 'file,crypto'
[ogg @ 0000019ea2ddc040] 25 bytes of comment header remain
[ogg @ 0000019ea2ddc040] Before avformat_find_stream_info() pos: 8676
bytes read:82799 seeks:2 nb_streams:1
[ogg @ 0000019ea2ddc040] All info found
[ogg @ 0000019ea2ddc040] After avformat_find_stream_info() pos: 8676
bytes read:82799 seeks:2 frames:1
Input #0, ogg, from 'ogg_padded':
   Duration: 00:00:09.62, start: 0.000000, bitrate: 41 kb/s
     Stream #0:0, 1, 1/48000: Audio: vorbis, 48000 Hz, mono, fltp, 70 kb/s
[AVIOContext @ 0000019ea2de5c80] Statistics: 82799 bytes read, 2 seeks

Thank you for the possibility. In the files I currently manage there are
only mp3 or ogg inside.


>
> Carl Eugen
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