Muuntokoodausprosessi

Muuntokoodausprosessi, also known as transcoding, is a process of converting a digital audio or video file from one format to another. This conversion can involve changing the file's codec, bitrate, resolution, or other parameters. The primary purpose of transcoding is often to make a file compatible with a specific device or platform, or to reduce its file size for easier storage or transmission.

The process typically involves decoding the source file into an intermediate uncompressed format and then re-encoding it into the desired target format. Different codecs (coder-decoder) are used for compression and decompression, and transcoding allows for switching between these codecs. For example, a high-resolution video file might be transcoded to a lower resolution and a more efficient codec to be playable on a mobile phone or to stream smoothly over a slower internet connection.

Transcoding can also be used to adapt content for different playback environments. This includes adjusting audio levels, adding or removing subtitles, or changing the aspect ratio of a video. While transcoding can improve accessibility and compatibility, it can also lead to some loss of quality, especially if the target format uses a more aggressive compression. The extent of quality degradation depends on the codecs used, the bitrate settings, and the complexity of the original media.