dvd_trip - beandog's mostly dvds multimedia wiki

====== dvd_trip ======

''dvd_trip'' is a tiny DVD ripper. It is tiny because it has a subset of DVD ripper options.

==== Features ====

I originally wrote it as a proof-of-concept and a way to use libmpv's backend for coding. It's good to use if you want to see what a DVD track would look like with some generic settings for encoding, a quick way to get in and out. If you like the way it works, awesome. :) 

What it does:

  * requires no arguments, will rip the longest track to trip_encode.mkv by default
  * rips the video track plus one audio track
  * can select audio track by language or track id
  * one fixed output based on output filename extension
  * .mkv - H.265 (x265) AAC (fdk-aac)
  * .mp4 - H.264 (x264) AAC (fdk-aac)
  * .webm - VPX9 Opus
  * .ogv - Theora Vorbis
  * sets output frames per second and color settings based on source (PAL / NTSC)
  * deinterlacing
  * detelecining
  * simple presets based on my preferences related to quality: low, medium, high, insane; default is medium

What it does not do:
  * subtitles
  * multiple audio streams
  * auto-cropping
  * add specific codec parameters
  * pass video or audio through

I recommend using something like [[HandBrake]] for more advanced options.

==== Quality Presets ====

The preset levels are set by my own experience of ripping DVDs, all of it though comes from lots of testing, and it's safe to say that the higher ones should look pretty good. :)

The 'insane' preset is designed for really high quality, and if you don't mind waiting a long time or the larger filesize, I'd recommend it. It's intended to be "archive-level" quality for the video -- that is, encode it once and be done forever. Since dvd_trip doesn't do audio passthrough (a limitation of libmpv), I can't recommend it for long-term audio storage.

==== x265 Encoding ====

CRF for x265 ranges from 0 to 51, with the default being 28.

In x265, changing the encoder speed is relative to filesize, not quality. In these presets, however, both CRF and encoding speed are adjusted for each one.
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