[FFmpeg-user] Make conversion go faster

Alexander Bieliaev alexanderb at callcabinet.com
Thu Sep 14 11:32:50 EEST 2023

This is the output:

ffmpeg version 4.4.1-full_build-www.gyan.dev Copyright (c) 2000-2021 the
FFmpeg developers
  built with gcc 11.2.0 (Rev1, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static
--disable-w32threads --disable-autodetect --enable-fontconfig
--enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma
--enable-libsnappy --enable-zlib --enable-librist --enable-libsrt
--enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray
--enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi
--enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264
--enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg
--enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype
--enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg
--enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec
--enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2
--enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl
--enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt
--enable-libopencore-amrwb --enable-libmp3lame --enable-libshine
--enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc
--enable-libilbc --enable-libgsm --enable-libopencore-amrnb
--enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa
--enable-libbs2b --enable-libflite --enable-libmysofa
--enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from
  Duration: N/A, bitrate: 256 kb/s
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, stereo,
s16, 256 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, mp3, to
    TSSE            : Lavf58.76.100
  Stream #0:0: Audio: mp3, 8000 Hz, stereo, s16p
      encoder         : Lavc58.134.100 libmp3lame
size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A
size=      19kB time=00:00:06.19 bitrate=  24.9kbits/s speed=7.81x
\\.\pipe\FFMpegCore_5af55f72-2307-408f-989d-50a819539903: Invalid argument
size=      39kB time=00:00:13.10 bitrate=  24.4kbits/s speed=  16x
video:0kB audio:39kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.112613%

On Wed, Sep 13, 2023 at 7:08 PM Ferdi Scholten <ferdi at sttc-nlp.nl> wrote:

> Hi! I'm using this command to convert wav audio to mp3:
> >   -i "\\.\pipe\FFMpegCore_d1110724-bf07-4ada-9ea4-5b404aea3d52" -b:a 64k
> -f
> > mp3 "\\.\pipe\FFMpegCore_c9edc9bd-8061-42a8-a806-ff34bfa7408d" -y
> >
> > I would like it to go faster. How can I make it faster?
> > Thanks!
> >
> Please post complete terminal output of that command.
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