$ ffmpeg -v verbose -y -lavfi "sine=d=10,asegment=timestamps=1|+1|+1" -c:a pcm_s16le out.mka 2>&1
ffmpeg version N-118025-g34c6ad0a07-20241207 Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 14.2.0 (crosstool-NG 1.26.0.120_4d36f27)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable-debug --enable-iconv --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-libxml2 --enable-openssl --enable-lzma --enable-fontconfig --enable-libharfbuzz --enable-libvorbis --enable-opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-libzmq --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --disable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libvvenc --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs='-ldl -lgomp' --extra-ldflags=-pthread --extra-ldexeflags=-pie --cc=x86_64-ffbuild-linux-gnu-gcc --cxx=x86_64-ffbuild-linux-gnu-g++ --ar=x86_64-ffbuild-linux-gnu-gcc-ar --ranlib=x86_64-ffbuild-linux-gnu-gcc-ranlib --nm=x86_64-ffbuild-linux-gnu-gcc-nm --extra-version=20241207
  libavutil      59. 49.100 / 59. 49.100
  libavcodec     61. 26.100 / 61. 26.100
  libavformat    61.  9.100 / 61.  9.100
  libavdevice    61.  4.100 / 61.  4.100
  libavfilter    10.  6.101 / 10.  6.101
  libswscale      8. 12.100 /  8. 12.100
  libswresample   5.  4.100 /  5.  4.100
  libpostproc    58.  4.100 / 58.  4.100
[out#0/matroska @ 0x7ffff25fbb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping.
[aost#0:0/pcm_s16le @ 0x7ffff25fd480] Created audio stream from complex filtergraph 0:[asegment]
[aost#0:0/pcm_s16le @ 0x7ffff25fd480] 
[out#0/matroska @ 0x7ffff25fbb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping.
[aost#0:1/pcm_s16le @ 0x7ffff25fe900] Created audio stream from complex filtergraph 0:[asegment]
[aost#0:1/pcm_s16le @ 0x7ffff25fe900] 
[out#0/matroska @ 0x7ffff25fbb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping.
[aost#0:2/pcm_s16le @ 0x7ffff2600040] Created audio stream from complex filtergraph 0:[asegment]
[aost#0:2/pcm_s16le @ 0x7ffff2600040] 
[out#0/matroska @ 0x7ffff25fbb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping.
[aost#0:3/pcm_s16le @ 0x7ffff2601980] Created audio stream from complex filtergraph 0:[asegment]
[aost#0:3/pcm_s16le @ 0x7ffff2601980] 
[out#0/matroska @ 0x7ffff25fbb80] No explicit maps, mapping streams automatically...
Stream mapping:
  asegment -> Stream #0:0 (pcm_s16le)
  asegment -> Stream #0:1 (pcm_s16le)
  asegment -> Stream #0:2 (pcm_s16le)
  asegment -> Stream #0:3 (pcm_s16le)
[aost#0:0/pcm_s16le @ 0x7ffff25fd480] Starting thread...
[aost#0:1/pcm_s16le @ 0x7ffff25fe900] Starting thread...
[aost#0:2/pcm_s16le @ 0x7ffff2600040] Starting thread...
[aost#0:3/pcm_s16le @ 0x7ffff2601980] Starting thread...
[fc#0 @ 0x7ffff25fb400] Starting thread...
Press [q] to stop, [?] for help
[aost#0:0/pcm_s16le @ 0x7ffff25fd480] [enc:pcm_s16le @ 0x7ffff25fdd80] Encoder thread received EOF
[aost#0:0/pcm_s16le @ 0x7ffff25fd480] Terminating thread with return code 0 (success)
[aost#0:2/pcm_s16le @ 0x7ffff2600040] [enc:pcm_s16le @ 0x7ffff2600d80] Encoder thread received EOF
[aost#0:2/pcm_s16le @ 0x7ffff2600040] [enc:pcm_s16le @ 0x7ffff2600d80] Could not open encoder before EOF
[aost#0:1/pcm_s16le @ 0x7ffff25fe900] [enc:pcm_s16le @ 0x7ffff25ff440] Encoder thread received EOF
[aost#0:1/pcm_s16le @ 0x7ffff25fe900] Terminating thread with return code 0 (success)
[aost#0:2/pcm_s16le @ 0x7ffff2600040] Task finished with error code: -22 (Invalid argument)
[aost#0:2/pcm_s16le @ 0x7ffff2600040] Terminating thread with return code -22 (Invalid argument)
[fc#0 @ 0x7ffff25fb400] Filtering thread received EOF
[fc#0 @ 0x7ffff25fb400] Terminating thread with return code 0 (success)
[aost#0:3/pcm_s16le @ 0x7ffff2601980] [enc:pcm_s16le @ 0x7ffff2602780] Encoder thread received EOF
[aost#0:3/pcm_s16le @ 0x7ffff2601980] Terminating thread with return code 0 (success)
[out#0/matroska @ 0x7ffff25fbb80] Nothing was written into output file, because at least one of its streams received no packets.
size=       0KiB time=N/A bitrate=N/A speed=N/A    
[AVIOContext @ 0x7ffff2603580] Statistics: 0 bytes written, 0 seeks, 0 writeouts
Conversion failed!