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​AV1 is an open source & royalty-free video codec developed by the ​Alliance for Open Media (AOMedia), a non-profit industry consortium. Depending on the use case, AV1 can achieve about 30% higher compression efficiency than VP9, and about 50% higher efficiency than H.264. There are currently three AV1 encoders supported by FFmpeg: libaom (invoked with libaom-av1 in FFmpeg), SVT-AV1 (libsvtav1), a

͏    FFmpeg has very powerful scale filter which can accomplish various tasks. Below lists some examples. ͏    More info in the official doc: ͏    https://ffmpeg.org/ffmpeg-filters.html#scale ͏    https://ffmpeg.org/ffmpeg-scaler.html [ "swscale" related: ͏    ​https://github.com/FFmpeg/FFmpeg/blob/master/libswscale/options.c ͏    ​https://github.com/search?type=code&q=repo:FFmpeg/FFmpeg+%22Lanczo

Audio Volume Manipulation Changing volume To change the audio volume, you may use FFmpeg's ​volume audio filter. If we want our volume to be half of the input volume: ffmpeg -i input.wav -filter:a "volume=0.5" output.wav 150% of current volume: ffmpeg -i input.wav -filter:a "volume=1.5" output.wav You can also use decibel measures. To increase the volume by 10dB: ffmpeg -i input.wav -filter:a "vol

Platform Support Intel / i965 See QuickSync. AMD / Mesa The Mesa VAAPI driver uses the UVD (Unified Video Decoder) and VCE (Video Coding Engine) hardware found in all recent AMD graphics cards and APUs. H.264, MPEG-2, MPEG-4 part 2 and VC-1 decode are supported by all GCN GPUs (since Southern Islands). H.265 support was added with GCN 3 (Volcanic Islands) and H.265 10-bit with GCN 4 (Arctic Island

Colorspace support in FFmpeg What is colorspace? Why should we care? Colorspace describes how an array of pixel values should be displayed on the screen. It provides information like how pixel values are stored within a file, and what the range and meaning of those values are. Basically, it tells the format of the array of pixels (e.g. RGB or YUV), and how the values of each color component should

This guide focuses on the encoder libx265 which can offer around 25–50% bitrate savings compared to H.264 video encoded with libx264, while retaining the same visual quality. These gains will be most pronounced at resolutions of 1080p and higher. See HWAccelIntro for information on supported hardware H.265/HEVC encoders. Getting ffmpeg with libx265 support ffmpeg needs to be built with the --enabl

Quicktime Player 10.2 (603.17) and Finder 10.8.3 on OS X 10.8.4 report duration as 5:43 instead of 5:00 when using default settings. iTunes 11.0.4 reports proper duration. Command lines and outputs from a Linux machine. $ ./ffmpeg -f lavfi -i sine=d=300 duration.mp3 ffmpeg version N-54122-g03cd3be Copyright (c) 2000-2013 the FFmpeg developers built on Jun 20 2013 12:18:56 with gcc 4.8.1 (GCC) conf

The -map option is used to choose which streams from the input(s) should be included in the output(s). The -map option can also be used to exclude specific streams with negative mapping. The commands in the diagram above will select the video from input0.mp4 and the 3rd audio stream from input1.mkv to output.mp4. The commands do the same thing, but use different syntax to map streams: The top comm

Windows dshow Uses the dshow (DirectShow) input device which is the preferred option for Windows users. See the wiki article about DirectShow and the dshow input device documentation for more information. vfwcap Warning: vfwcap is outdated. Use dshow instead if possible. See DirectShow for more information. Uses the outdated vfwcap input device. See the vfwcap input device documentation for more i

FFmpeg can basically stream through one of two ways: It either streams to a some "other server", which re-streams for it to multiple clients, or it can stream via UDP/TCP directly to some single destination receiver, or alternatively directly to a multicast destination. Theoretically you might be able to send to multiple receivers via multiple outputs but there is no built-in full blown server. Se

libvpx-vp9 is the VP9 video encoder for ​WebM, an open, royalty-free media file format. libvpx-vp9 can save about 20–50% bitrate compared to libx264 (the default H.264 encoder), while retaining the same visual quality. To install FFmpeg with support for libvpx-vp9, look at the Compilation Guides and compile FFmpeg with the --enable-libvpx option. Note that for 10-bit encoding, you need to set the

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Many platforms offer access to dedicated hardware to perform a range of video-related tasks. Using such hardware allows some operations like decoding, encoding or filtering to be completed faster or using less of other resources (particularly CPU), but may give different or inferior results, or impose additional restrictions which are not present when using software only. On PC-like platforms, vid

Welcome to the FFmpeg Bug Tracker and Wiki This Wiki is intended for all kinds of FFmpeg and multimedia related information. Everyone is welcome to add to, edit and improve it! Bug Reports List of Bug Reports List of Tasks non developers can help with Please read the ​Bug Tracker Manual and Submitting a Bug Report before filing a new report. You must register before you can file a report or edit t

FFmpeg Compilation Guide This page contains a list of resources which describe the necessary steps required for compiling FFmpeg from scratch or with the help of build scripts and/or package managers. All platforms Read the Generic compilation guide, regardless of your platform. It provides generic compilation and installation instructions, including the use of configure. CompilationGuide/vcpkg –

Here are a few solutions for capturing your desktop and recording a video of your screen with ffmpeg. (A Chinese version of this page is also available.) For the sake of brevity, these commands do not specify any additional encoder settings. For more info about H.264 encoding, see the H.264 encoding guide. By default, these commands will use the x264 encoder, which should be reasonably fast on mod

​Advanced Audio Coding (AAC) is the successor format to MP3, and is defined in MPEG-4 part 3 (ISO/IEC 14496-3). It is often used within an MP4 container format; for music the .m4a extension is customarily used. The second-most common use is within MKV (Matroska) files because it has better support for embedded text-based soft subtitles than MP4. The examples in this guide will use the extensions M

If you have media files with exactly the same codec and codec parameters you can concatenate them as described in "Concatenation of files with same codecs". If you have media with different codecs you can concatenate them as described in "Concatenation of files with different codecs" below. Concatenation of files with same codecs There are two methods within ffmpeg that can be used to concatenate

ffprobe is a simple multimedia stream analyzer. You can use it to output all kinds of information about an input including duration, frame rate, frame size, etc. It is also useful for gathering specific information about an input to be used in a script. Usage ffprobe [OPTIONS] [INPUT_FILE] Show help Refer to the manual: man ffprobe or show the included help: ffprobe -h Scroll to the top of the con

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This guide for standard support releases of Ubuntu, Debian, and Linux Mint and will provide a local, non-system installation of FFmpeg with several external libraries. You may also refer to the Generic Compilation Guide for additional information about compiling software. Recent static builds are also available for lazy people or those who are unable to compile. The static builds do not support no