LaserDisc players can provide a great degree of control over the playback process. Unlike many DVD players, the transport mechanism always obeys commands from the user: pause, fast-forward, and fast-reverse commands are always accepted (barring, of course, malfunctions). There were no "User Prohibited Options" where content protection code instructs the player to refuse commands to skip a specific part (such as fast forwarding through copyright warnings). (Some DVD players, particularly higher-end units, do have the ability to ignore the blocking code and play the video without restrictions, but this feature is not common in the usual consumer market.)
With CAV LaserDiscs the user can jump directly to any individual frame of a video simply by entering the frame number on the remote keypad, a feature not common among DVD players. Some DVD players have cache features which stores a certain amount of the video in RAM which allows the player to index a DVD as quickly as an LD, even down to the frame in some players.
Damaged spots on a LaserDisc can be played through or skipped over, while a DVD will often become unplayable past the damage. Some newer DVD players feature a repair+skip algorithm, which alleviates this problem by continuing to play the disc, filling in unreadable areas of the picture with blank space or a frozen frame of the last readable image and sound. The success of this feature depends upon the amount of damage. LaserDisc players, when working in full analog, recover from such errors faster than DVD players. Direct comparison here is almost impossible due to the sheer size differences between the two media. A 1 in (3 cm) scratch on a DVD will probably cause more problems than a 1 in (3 cm) scratch on a LaserDisc, but a fingerprint taking up 1% of the area of a DVD would almost certainly cause fewer problems than a similar mark covering 1% of the surface of a LaserDisc.[citation needed]
Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers.
Another advantage, at least to some consumers, was the lack of any sort of anti-piracy technology. It was claimed that Macrovision's Copyguard protection could not be applied to LaserDisc, due to the format's design. The vertical blanking interval, where the Macrovision signal would be implemented, was also used for the internal timing on LaserDisc players, so test discs with Macrovision would not play at all. There was never a push to redesign the format despite the obvious potential for piracy due to its relatively small market share. The industry simply decided to engineer it into the DVD specification.
LaserDisc's support for multiple audio tracks allowed for vast supplemental materials to be included on-disc and made it the first available format for "Special Edition" releases; the 1984 Criterion Collection edition of Citizen Kane is generally credited as being the first "Special Edition" release to home video,[citation needed] and for setting the standard by which future SE discs were measured. The disc provided interviews, commentary tracks, documentaries, still photographs, and other features for historians and collectors.
เครื่องเล่นเลเซอร์ดิสค์สามารถให้ควบคุมการเล่นในระดับที่ดี ซึ่งแตกต่างจากเครื่องเล่น DVD หลาย กลไกขนส่งมักจะปฏิบัติตามคำสั่งจากผู้ใช้: หยุด กรอไปข้างหน้า และคำสั่งย้อนกลับอย่างรวดเร็วเสมอรับ (แบร์ แน่นอน ความบกพร่อง) มีไม่มี "ผู้ใช้ห้ามตัวเลือก" ที่ป้องกันเนื้อหารหัสสั่งให้โปรแกรมเล่นจะปฏิเสธคำสั่งเพื่อข้ามส่วนที่เฉพาะเจาะจง (เช่นส่งต่อที่รวดเร็วผ่านคำเตือนลิขสิทธิ์) (เครื่องเล่น DVD บาง โดยเฉพาะอย่างยิ่งสูงสุดหน่วย มีสามารถละเว้นรหัสบล็อก และเล่นวิดีโอไม่จำกัด แต่คุณลักษณะนี้ไม่ทั่วไปในตลาดผู้บริโภคปกติ)ด้วย CAV LaserDiscs ผู้ใช้สามารถไปโดยตรงใด ๆ แต่ละเฟรมของวิดีโอเพียงแค่ โดยการป้อนหมายเลขของเฟรมบนแป้นพิมพ์ระยะไกล คุณลักษณะทั่วไประหว่างเครื่องเล่น DVD ไม่ เครื่องเล่นดีวีดีบางเครื่องมีคุณลักษณะการแคซึ่งเก็บจำนวนของวิดีโอใน RAM ซึ่งช่วยให้ผู้เล่นไปอย่างรวดเร็วที่เป็น LD แม้ลงกรอบในบางเครื่องเล่นดีวีดีจัดทำดัชนีDamaged spots on a LaserDisc can be played through or skipped over, while a DVD will often become unplayable past the damage. Some newer DVD players feature a repair+skip algorithm, which alleviates this problem by continuing to play the disc, filling in unreadable areas of the picture with blank space or a frozen frame of the last readable image and sound. The success of this feature depends upon the amount of damage. LaserDisc players, when working in full analog, recover from such errors faster than DVD players. Direct comparison here is almost impossible due to the sheer size differences between the two media. A 1 in (3 cm) scratch on a DVD will probably cause more problems than a 1 in (3 cm) scratch on a LaserDisc, but a fingerprint taking up 1% of the area of a DVD would almost certainly cause fewer problems than a similar mark covering 1% of the surface of a LaserDisc.[citation needed]Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers.Another advantage, at least to some consumers, was the lack of any sort of anti-piracy technology. It was claimed that Macrovision's Copyguard protection could not be applied to LaserDisc, due to the format's design. The vertical blanking interval, where the Macrovision signal would be implemented, was also used for the internal timing on LaserDisc players, so test discs with Macrovision would not play at all. There was never a push to redesign the format despite the obvious potential for piracy due to its relatively small market share. The industry simply decided to engineer it into the DVD specification.LaserDisc's support for multiple audio tracks allowed for vast supplemental materials to be included on-disc and made it the first available format for "Special Edition" releases; the 1984 Criterion Collection edition of Citizen Kane is generally credited as being the first "Special Edition" release to home video,[citation needed] and for setting the standard by which future SE discs were measured. The disc provided interviews, commentary tracks, documentaries, still photographs, and other features for historians and collectors.
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