information can theoretically be stored indefinitely without deterioration, some digital formats (like MiniDV) place tracks only about 10 micrometers apart (compared with 19–58 μm for VHS). A digital recording is more vulnerable to wrinkles or stretches in the tape which could erase data, but tracking and error-correction code on the tape compensates for most defects. On analog media, similar damage registers as "noise" in the video, leaving a deteriorated (but watchable) video. DVDs may develop DVD rot, losing large chunks of data. An analog recording may be "usable" after its storage media deteriorates severely, but slight media degradation in digital recordings may trigger an "all or nothing" failure; the digital recording will be unplayable without extensive restoration. Recording media Older digital camcorders record video onto tape digitally, microdrives, hard drives, and small DVD-RAM or DVD-Rs. Newer machines since 2006 record video onto flash memory devices and internal solid-state drives in MPEG-1, MPEG-2 or MPEG-4 format. Because these codecs use inter-frame compression, frame-specific editing requires frame regeneration, additional processing and may lose picture information. Codecs storing each frame individually, easing frame-specific scene editing, are common in professional use. Other digital consumer camcorders record in DV or HDV format on tape, transferring content over FireWire or USB 2.0 to a computer where large files (for DV, 1GB for 4 to 4.6 minutes in PAL/NTSC resolutions) can be edited, converted and recorded back to tape. The transfer is done in real time, so the transfer of a 60-minute tape requires one hour to transfer and about 13GB of disk space for the raw footage (plus space for rendered files and other media). Tapeless A tapeless camcorder is a camcorder that does not use video tape for the digital recording of video productions as 20th century ones did. Tapeless camcorders record video as digital computer files onto data storage devices such as optical discs, hard disk drives and solid-state flash memory cards. Inexpensive pocket video cameras use flash memory cards, while some more expensive camcorders use solid-state drives or SSD; similar flash technology is used on semi-pro and high-end professional video cameras for ultrafast transfer of high-definition television (HDTV) content. Most consumer-level tapeless camcorders use MPEG-2, MPEG-4 or its derivatives as video coding formats. They are normally capable of still-image capture to JPEG format additionally. Consumer-grade tapeless camcorders include a USB port to transfer video onto a computer. Professional models include other options like