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It is recommended to enable per package instead of globallyĪdd support for encoding of audio or video files If you want to get meaningful backtraces see Īdd extra documentation (API, Javadoc, etc). Mostly used for specific filters.Įnables AV1 decoding via media-libs/dav1d.Įnable extra debug codepaths, like asserts and extra output.

For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options.Add support for media-libs/alsa-lib (Advanced Linux Sound Architecture)Įnables support for AMD's Advanced Media Framework (AMF)Įnables Adaptive Multi-Rate Audio supportĮnables Adaptive Multi-Rate Audio encoding support with media-libs/vo-amrwbenc.Įnables media-libs/libbs2b based Bauer stereo-to-binaural filter.Įnables audio CD grabbing with dev-libs/libcdio.Įnables audio fingerprinting support with media-libs/chromaprint.īuilds libffmpeg.so to enable media playback in Chromium-based browsers like Opera and Vivaldi.Įnables codec2 low bit rate speech codec support via media-libs/codec2.Įnables runtime CPU detection (useful for bindist, compatibility on other CPUs)Įnables CUDA-based acceleration. For output streams it is set by default to the number of input audio channels.

-ac - Set the number of audio channels.

For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options. For output streams it is set by default to the frequency of the corresponding input stream.

-ar - Set the audio sampling f requency.

-vn - Disable video, to make sure no video (including album cover image) is included if the source would be a video file.

You can adjust that argument beside some others:

type f -iname "*.webm" -exec bash -c 'FILE="$1" ffmpeg -i "$' \ įor for eg podcasts 128k is enaugh for me.

No one seems to use find, which let you do everything on one line. I guess that the mp3 codec isn't installed. Text2movsub remove_extra noise mov2textsub mp3decomp mp3comp mjpegadump imxdump h264_mp4toannexb dump_extra I also ran this command: ffmpeg -formats | grep mp3Īnd got this in response: FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.ĭ A mp3adu ADU (Application Data Unit) MP3 (MPEG audio layer 3) When I write the command as ffmpeg -i audio.ogg -acodec mp3 newfile.mp3, I get the error: FFmpeg version 0.5.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.ĭuration: 00:04:12.52, start: 0.000000, bitrate: 208 kb/s I need to convert audio files to mp3 using ffmpeg.