sox_ng is another Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
Cinelerra is a non-linear HD media and video editing, rendering, storage and transcoding system. It proviees 64 bit audio support, and videos in RGBA and YUVA color spaces, utilizes floating point and 16-bit integer representations internally, with a 1:1 pixel ratio, but is otherwise resolution and frame-rate independen, and targetted at real-time processing. It's featureful user interface is optimized for professional usage and can also be used from the command line. Cinelerra has broad codec s
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