fails to correctly read Opus test vector files

[Christoph Anton Mitterer]

Summary of the bug:

The Opus developer provide a set of test vector files to test for certain stuff of Opus:
​https://people.xiph.org/~greg/opus_testvectors/
especially:
correctness_gain_loud_speech.opus
correctness_gain_silent_output.opus
correctness_trimming_nobeeps.opus

ffmpeg seems to incorrectly read correctness_trimming_nobeeps.opus, namely, there are beeps at the start and end of the file which (listen to the file) should not be played/used/etc. by conforming programs.

ffmpeg however only "ignores" the final beep and not both, as a conforming program should.

How to reproduce:

$ ffmpeg -i correctness_trimming_nobeeps.opus correctness_trimming_nobeeps.wav

$ #playback the resulting WAV with any player will result in the leading beep to be heared.

$ ffmpeg -version
ffmpeg version 4.1.1-1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Debian 8.2.0-20)
configuration: --prefix=/usr --extra-version=1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 22.100 / 56. 22.100
libavcodec     58. 35.100 / 58. 35.100
libavformat    58. 20.100 / 58. 20.100
libavdevice    58.  5.100 / 58.  5.100
libavfilter     7. 40.101 /  7. 40.101
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  3.100 /  5.  3.100
libswresample   3.  3.100 /  3.  3.100
libpostproc    55.  3.100 / 55.  3.100

[Christoph Anton Mitterer]

uhm?

[mkver]

1. This is a duplicate of #5258.
2. #5258 has actually already been fixed, but the fix happened after the release of release 4.1. Notice that only current git head is supported here, hence your ticket is invalid.

[Christoph Anton Mitterer]

In fact you're right, and I've just verified this on a (standard, i.e. no furhter ./configure options) build of master.