Hello!
I have a question,
I'm trying something pretty simple, I have a WebM file/container downloaded
from YouTube containing only 16-Bit Opus audio. I want to copy and retain just
the audio part since this container only has audio anyways, no video.
The WebM file/container is called Input.webm and is located in the
YouTube_Samples folder on my desktop.
As shown in the attached picture, it is originally in a 16-Bit format which one
would assume is using integer representation.
For copying I'm just using these very simple commands:
cd C:\Users\VLAD NEGRU\Desktop\YouTube_Samples
ffmpeg -i Input.webm -c:a copy Output.opus
However, the output file is now in a floating point format and my portable
player won't play that.
Just in case that it matters somehow for anything, I'm using Windows 10 Pro as
operating system on my computer.
Is it possible to change the default fltp (floating point) format when working
with .webm and .opus files?
Is it possible to have it set so that it retains the original 16-Bit integer
format when just copying the audio from the container?
If possible, then what is the command line argument for forcing the use of
integers with .webm and .opus files?
Unfortunately the documentation does not provide much info about working with
opus files:
https://ffmpeg.org/ffmpeg-codecs.html
Here is a copy of my entire command line in case it helps:
C:\Windows\system32>cd C:\Users\VLAD NEGRU\Desktop\YouTube_Samples
C:\Users\VLAD NEGRU\Desktop\YouTube_Samples>ffmpeg -i Input.webm -c:a copy
Output.opus
ffmpeg version 7.0-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg
developers
built with gcc 13.2.0 (Rev5, 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-bzlib --enable-lzma
--enable-libsnappy --enable-zlib --enable-librist --enable-libsrt
--enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray
--enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption
--enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libxevd
--enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve
--enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg
--enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r
--enable-libfreetype --enable-libfribidi --enable-libharfbuzz
--enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg
--enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va
--enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec
--enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan
--enable-libplacebo --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-libcodec2 --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 59. 8.100 / 59. 8.100
libavcodec 61. 3.100 / 61. 3.100
libavformat 61. 1.100 / 61. 1.100
libavdevice 61. 1.100 / 61. 1.100
libavfilter 10. 1.100 / 10. 1.100
libswscale 8. 1.100 / 8. 1.100
libswresample 5. 1.100 / 5. 1.100
libpostproc 58. 1.100 / 58. 1.100
Input #0, matroska,webm, from 'Input.webm':
Metadata:
encoder : google/video-file
Duration: 00:02:08.24, start: -0.007000, bitrate: 126 kb/s
Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Output #0, opus, to 'Output.opus':
Metadata:
encoder : Lavf61.1.100
Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
Metadata:
encoder : Lavf61.1.100
Press [q] to stop, [?] for help
[out#0/opus @ 00000236f35d5600] video:0KiB audio:1929KiB subtitle:0KiB other
streams:0KiB global headers:0KiB muxing overhead: 0.824350%
size= 1945KiB time=00:02:08.24 bitrate= 124.3kbits/s speed=4.31e+03x
Please Help with some much needed answers if possible.
Thank You!
With Respect,
Vlad Negru
_______________________________________________
Libav-user mailing list
Libav-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/libav-user
To unsubscribe, visit link above, or email
libav-user-requ...@ffmpeg.org with subject "unsubscribe".