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libavif is a portable, open-source C library that implements encoding and decoding for the AVIF (AV1 Image File Format), offering a robust, production-ready way to work with AVIF images across platforms. It supports all AV1-supported YUV formats and bit-depths, including alpha (transparency), and includes command-line tools (avifenc and avifdec) to easily convert to/from AVIF from common image formats like JPEG, PNG, or Y4M. The API is straightforward, allowing applications to integrate AVIF support natively — creating, decoding, compressing, or decompressing images programmatically. Recent developments have added experimental support for HDR gain maps, improved color-space handling (including wide color gamut and high bit depth), and better quality tuning modes for encoding, making libavif a cutting-edge tool for high-quality image compression.

...Hardware acceleration supported. Ultra-fast transcoding supported. Produces standard anywhere-playing mp4/h264/yuv420p/aac video or mp3/cbr/320k audio files by default. FFMPEG 4.2.2 command line added and can be edited for your own custom conversion. Supported video containers: *.mpg, *.mp4, *.mov, *.ts *.3gp, *.avi, *.av1, *.wmv, *.flv, *.webm, *.mkv, *.mpeg-dash and much more... Supported video codecs: H.264/AVC, HEVC/H.265, H.261, H.262, H.263, Motion JPEG, Theora, VP3, VP5, VP6, VP7, VP8, VP9, animated WebP and much more... ...

...Provides an abstraction to access capture and playback devices. Implements audio mixing and resampling routines. Implements color conversion and scaling routines. FFmpeg is a command-line toolbox to manipulate, convert and stream multimedia content. ffplay is a minimalistic multimedia player. FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL.

MediaCoder Agent is used to form a distributed transcoder with MediaCoder. It is light-weight, portable and open-source. It receives video frames sent by MediaCoder via TCP, encodes them with the requested video encoder and sends encoded elementary stream back to MediaCoder. There is no disk I/O in this procedure.

The videotrans project is a set of scripts that converts a movie file in any format that mplayer understands (AVI, etc) to a DVD compatible VOB file, including all the necessary conversions. Further, an automatic DVD menu generator is provided.

ezMPEG is an easy-to-use and easy-to-understand MPEG1 video encoder API

Implementation of a RLE encoder/decoder library tailored for DICOM image.