transcoding

Transcoding is the direct digital-to-digital conversion of one encoding to another, such as for movie data files (e.g., PAL, SECAM, NTSC), audio files (e.g., MP3, WAV), or character encoding (e.g., UTF-8, ISO/IEC 8859). This is usually done in cases where a target device (or workflow) does not support the format or has limited storage capacity that mandates a reduced file size, or to convert incompatible or obsolete data to a better-supported or modern format.
In the analog video world, transcoding can be performed just while files are being searched, as well as for presentation. For example, Cineon and DPX files have been widely used as a common format for digital cinema, but the data size of a two-hour movie is about 8 terabytes (TB). That large size can increase the cost and difficulty of handling movie files. However, transcoding into a JPEG2000 lossless format has better compression performance than other lossless coding technologies, and in many cases, JPEG2000 can compress images to half-size.Transcoding is commonly a lossy process, introducing generation loss; however, transcoding can be lossless if the output is either losslessly compressed or uncompressed. The process of transcoding into a lossy format introduces varying degrees of generation loss, while the transcoding from lossy to lossless or uncompressed is technically a lossless conversion because no information is lost; however, the process is irreversible and is more correctly known as destructive.

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  1. topgazza

    Transcoding - do I need it ?

    Here’s my scenario I’ve always bought a NAS with a cpu that has built in graphics. Previously a Synology and currently a Terramaster 423. I only play my movie files direct via my internal newtwork to an Apple TV 4K then onto my Sony 4k OLED. I don’t think at any stage I am transcoding. My...
  2. J

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    I understand some bits of this but not the whole picture. I've tried before but ended up still confused so maybe talking in a practical example rather than academically would be easier? I have multiple devices on which to consume streaming content: A couple of FireTV sticks An LG WebOS smart...
  3. TheDarkKnight01

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  4. TheCableGuy96

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    I'm trying to run 4K content through my LAN to Plex on my Xbox from my Synology NAS. The issue is that some of the content streams just fine and some of the content buffers heavily so much so it's unwatchable. I'm confused why some works and some doesn't so I played each one individually and...
  5. J

    PC Components for a Media Server/NAS

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