$ ffmpeg -v verbose -y -lavfi "sine=d=10,asegment=timestamps=1|+2|+2" -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 @ 0x7fffe4b1cb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping. [aost#0:0/pcm_s16le @ 0x7fffe4b1e480] Created audio stream from complex filtergraph 0:[asegment] [aost#0:0/pcm_s16le @ 0x7fffe4b1e480] [out#0/matroska @ 0x7fffe4b1cb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping. [aost#0:1/pcm_s16le @ 0x7fffe4b1f900] Created audio stream from complex filtergraph 0:[asegment] [aost#0:1/pcm_s16le @ 0x7fffe4b1f900] [out#0/matroska @ 0x7fffe4b1cb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping. [aost#0:2/pcm_s16le @ 0x7fffe4b21040] Created audio stream from complex filtergraph 0:[asegment] [aost#0:2/pcm_s16le @ 0x7fffe4b21040] [out#0/matroska @ 0x7fffe4b1cb80] Creating output stream from unlabeled output of complex filtergraph 0. This overrides automatic audio mapping. [aost#0:3/pcm_s16le @ 0x7fffe4b22980] Created audio stream from complex filtergraph 0:[asegment] [aost#0:3/pcm_s16le @ 0x7fffe4b22980] [out#0/matroska @ 0x7fffe4b1cb80] 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 @ 0x7fffe4b1e480] Starting thread... [aost#0:1/pcm_s16le @ 0x7fffe4b1f900] Starting thread... [aost#0:2/pcm_s16le @ 0x7fffe4b21040] Starting thread... [aost#0:3/pcm_s16le @ 0x7fffe4b22980] Starting thread... [fc#0 @ 0x7fffe4b1c400] Starting thread... Press [q] to stop, [?] for help [aost#0:0/pcm_s16le @ 0x7fffe4b1e480] [enc:pcm_s16le @ 0x7fffe4b1ed80] Encoder thread received EOF [aost#0:0/pcm_s16le @ 0x7fffe4b1e480] Terminating thread with return code 0 (success) [aost#0:1/pcm_s16le @ 0x7fffe4b1f900] [enc:pcm_s16le @ 0x7fffe4b20440] Encoder thread received EOF [aost#0:1/pcm_s16le @ 0x7fffe4b1f900] Terminating thread with return code 0 (success) Output #0, matroska, to 'out.mka': Metadata: encoder : Lavf61.9.100 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s (default) Metadata: encoder : Lavc61.26.100 pcm_s16le Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Metadata: encoder : Lavc61.26.100 pcm_s16le Stream #0:2: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Metadata: encoder : Lavc61.26.100 pcm_s16le Stream #0:3: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s Metadata: encoder : Lavc61.26.100 pcm_s16le [out#0/matroska @ 0x7fffe4b1cb80] Starting thread... [aost#0:2/pcm_s16le @ 0x7fffe4b21040] [enc:pcm_s16le @ 0x7fffe4b21d80] Encoder thread received EOF [aost#0:2/pcm_s16le @ 0x7fffe4b21040] Terminating thread with return code 0 (success) [fc#0 @ 0x7fffe4b1c400] Filtergraph returned EOF, finishing [fc#0 @ 0x7fffe4b1c400] All consumers returned EOF [aost#0:3/pcm_s16le @ 0x7fffe4b22980] [enc:pcm_s16le @ 0x7fffe4b23780] Encoder thread received EOF [aost#0:3/pcm_s16le @ 0x7fffe4b22980] Terminating thread with return code 0 (success) [out#0/matroska @ 0x7fffe4b1cb80] All streams finished [out#0/matroska @ 0x7fffe4b1cb80] Terminating thread with return code 0 (success) [fc#0 @ 0x7fffe4b1c400] Terminating thread with return code 0 (success) [AVIOContext @ 0x7fffe4b24580] Statistics: 887164 bytes written, 2 seeks, 5 writeouts [out#0/matroska @ 0x7fffe4b1cb80] Output file #0 (out.mka): [out#0/matroska @ 0x7fffe4b1cb80] Output stream #0:0 (audio): 44 frames encoded (44100 samples); 44 packets muxed (88200 bytes); [out#0/matroska @ 0x7fffe4b1cb80] Output stream #0:1 (audio): 86 frames encoded (88200 samples); 86 packets muxed (176400 bytes); [out#0/matroska @ 0x7fffe4b1cb80] Output stream #0:2 (audio): 43 frames encoded (44100 samples); 43 packets muxed (88200 bytes); [out#0/matroska @ 0x7fffe4b1cb80] Output stream #0:3 (audio): 259 frames encoded (264600 samples); 259 packets muxed (529200 bytes); [out#0/matroska @ 0x7fffe4b1cb80] Total: 432 packets (882000 bytes) muxed [out#0/matroska @ 0x7fffe4b1cb80] video:0KiB audio:861KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.474603% size= 865KiB time=00:00:01.00 bitrate=7089.5kbits/s speed=70.9x