Luckily, hard disks have the ability to be setup in a RAID configuration which offers the possibility to repair corrupted data.Ĭoncerning the data itself, also with digital sources, re-encoding or transcoding data results in generation loss. However, such data degradation may also occur on hard disks. Used in the reflective layer of optical discs such as CD's, DVD's and Blu-ray's. Photodegradation in which case light destroys the dye In optical disks such data degradation may be caused by Problems may arise with data storage itself such asĭata degradation (= bit rot) in a storage There are many factors to consider to preserve the original quality of source material. Optical disks (such as DVD's) deteriorate over time resulting in data loss.ĭigital is not synonymous for perfect storage. Why rip DVD's to a harddisk? JPG generation loss (500 iterations). Quality itself affects the magnitude of generation loss.Ĭlick video to see the degradation between generations: The second video is of a guy staged punching another guy with around 65 generations created in 2002 Video 1 is of Roxette - Fading like a flower which consists of 23 Degradation speed depend on VHS tape manufacturer, tape lubricant, time, storage temperature andīelow are two video's (click the playlist icon to find the second video). Tape backing between 1 and 8 hours up to 60 ☌, This may result in total failure of the tape. The substance that hold the iron oxide magnetizable coating, which in effect holds the analogue information (i.e. Sticky-shed syndrome is the deterioration of Tracking problems and thus total signal loss.Īpart from these technology-specific issues, degradation of VHS happens over time even when tapes are not used. Tape resulting in quality degradation by merely playing tapes.Īnother problem is that damage to the control track results in The video recorder heads physically touch the VHS tapes have their own unique copying and playback problems concerning quality retention. With each copy or conversion of one format to another, there is loss of quality. Making subsequent copies of VHS results in generation loss. VHS tapes deteriorate over time resulting in data loss. However, for broad compatibility and usability on computational less powerful devices H264 is still king. It is true that H265/HEVC is increasingly adopted The additional benefits of total control and the ability to deliverĬonsistent automated results. The solution to use should be free, adware free and be simple in use. Ripping analogue video material has its own considerations to observe such asĬomposite, S-video and component signalling technologies. Both for audio and videoĪre important to take into account broad device compatibility, retaining perceived quality and file size. Audio quality is affected by choice of codec (e.g. Main, High, High444) to consider, CRF settings (Constant Rate Factor)Īnd deinterlacing that affect perceived quality. To AAC, add chapters and save the result in either a MP4 or MKV container where the meta data is located at the start of the file (for web play).Įspecially the the quality issue can be a hassle to figure out: for H264 video there are profiles (e.g. The second objective is a bit more complicated: take the newly created MP4 file, deinterlace and convert the video stream to H264, convert the audio stream Video and audio stream inside a MP4 (or MKV) container. The first objective of this article is simple: take the original VOB files from a DVD, concatenate them and without any conversion put the Other ripping software includes adware such as OpenCandy, such as Freemake Video Converter.Īgain, other options, such as AnyDVD, are bloated with many features and come with a steep price tag. Unfortunately, many programs do convert the original DVD source, such as With all this competition at least a few DVD rippers should be easy to useĪnd deliver a video file with an exact copy, without any conversion. There is much ripping software to be found on the Internet. If you're only interested in the FFmpeg commands, skip right to it: DVD discs contain 1 GB VOB files while one MPEG file should be the result.Ĭonverting to modern formats entail considering many factors, including de-interlacing, quality settings and container choice.Īdding chapters to MP4 is doable via MKV. Ripping the original byte-for-byte DVD content can be daunting. Ben Hup - 10068- 1 0 - 0 Abstract MP4/MKV containers can contain many formats.
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