canvas 平滑運動

If you’ve just bought a new TV, you might be wondering why everything you watch feels eerily sped up and smooth, like you’re watching a live broadcast all the time. You’re not imagining things: Your TV might be suffering from Motion Smoothing.

如果您剛剛購買了一臺新電視，您可能想知道為什么觀看的所有內容都感覺快慢而流暢，就像您一直在觀看直播一樣。 您沒有想像的東西：您的電視可能正遭受運動平滑的困擾。

什么是運動平滑，它如何工作？ (What is Motion Smoothing, and How Does it Work?)

Every TV manufacturer calls their specific tech by a different name, for marketing reasons of course. Action Smoothing, TruMotion, Motionflow—these are all names for the same function: making your TV’s picture feel smoother. And that’s motion smoothing.?It’s also known as the “soap opera effect” because low-budget soap operas used to have cheap video cameras that produced a higher frame rate, smoother-looking video.

當然，每個電視制造商都出于營銷原因用不同的名稱稱呼其特定技術。 動作平滑，TruMotion，Motionflow-這些都是同一功能的名稱：使電視圖像更平滑。 這就是運動平滑。 它也被稱為“肥皂劇效果”，因為低預算的肥皂劇曾經擁有廉價的攝像機，可以產生更高的幀頻和更流暢的視頻。

Most TV shows, movies, and broadcasts are filmed at 24 or 30 frames per second (fps, also called “hertz” or “Hz”), which is fast enough for the eye to perceive them as smooth video and not a choppy slideshow. However, the standard most TVs and monitors are capable of is 60 Hz and some more expensive displays clock in at 120 Hz and even 240 Hz.

大多數電視節目，電影和廣播都是以每秒24或30幀(fps，也稱為“赫茲”或“ Hz”)進行拍攝的，其速度足以使眼睛察覺到它們是流暢的視頻，而不是斷斷續續的幻燈片。 但是，大多數電視和監視器所支持的標準頻率為60 Hz，某些更昂貴的顯示器時鐘頻率為120 Hz，甚至240 Hz。

But, movies and TV shows are still 30fps, which presents a problem: what’s the point of 60hz displays if the content you watch only updates at half of that? The refresh rate of film isn’t changing anytime soon, so this is where “Motion Smoothing” comes in. Motion smoothing tries to fix this issue by taking a guess at the 30 frames missing from each second, usually by comparing a before and after shot and attempting to find the middle ground between the two of them.

但是，電影和電視節目仍然是30fps，這帶來了一個問題：如果您觀看的內容僅更新一半，則60hz顯示的意義何在？ 影片的刷新率不會很快改變，因此這就是“運動平滑”的原因。運動平滑通過猜測每秒丟失的30幀來解決此問題，通常通過比較前后射擊并試圖找到兩者之間的中間地帶。

為什么會有這樣的問題？ (Why Is It Such a Problem?)

Most people have trouble with motion smoothing. After all, we’ve spent years training our brains to enjoy movies and TV shows filmed at 24 or 30fps, and our brains have come to think of that as how a movie or TV show should look.

大多數人在運動平滑方面遇到麻煩。 畢竟，我們已經花了很多年訓練我們的大腦來欣賞以24fps或30fps拍攝的電影和電視節目，并且我們的大腦已經將其視為電影或電視節目的外觀。

TV manufacturers, on the other hand, are just trying to advertise bigger numbers to consumers. 240 Hz must be better than 120 Hz and much better than 60 Hz, right? Well, sometimes it is, yes—especially when the content is designed for it.

另一方面，電視制造商只是試圖向消費者宣傳更多的廣告。 240 Hz必須好于120 Hz，好于60 Hz，對嗎？ 是的，有時候是的，尤其是在為內容設計內容時。

But most consumers don’t enjoy the higher frame rates on most of the content they watch. Viewing content filmed at 24 or 30fps looks especially weird on TVs that run at 120 Hz and above. The insanely smooth motion makes the video almost seem real, which breaks the immersion of cinema completely. Honestly, it often feels more like you’re watching a behind-the-scenes documentary about the movie than the movie itself.

但是大多數消費者并不喜歡他們觀看的大多數內容的更高幀速率。 在以120 Hz或更高頻率運行的電視上，觀看以24或30fps拍攝的內容看起來特別奇怪。 瘋狂的流暢運動使視頻看起來幾乎真實，這完全打破了電影的沉浸感。 老實說，通常感覺就像您在看一部關于電影的幕后紀錄片，而不是電影本身。

For some things, motion smoothing makes sense. Live action sports and video games, for example, have fast-moving content that could use a bit more clarity. Unfortunately, two other problems associated with motion smoothing break these two use cases as well.

對于某些事情，運動平滑是有意義的。 例如，實況體育和視頻游戲具有快速移動的內容，可能需要更多的清晰度。 不幸的是，與運動平滑相關的其他兩個問題也打破了這兩個用例。

• For sports, things sometimes move so fast that the smoothing algorithm doesn’t know what to do, and ends up producing a strange, often blurry image instead of a clear “in between” frame. This defect, which results in incorrect or glitch pictures, is called?artifacting.

  對于體育運動來說，有時候運動太快了，以至于平滑算法不知道該怎么做，最終會產生奇怪的，通常是模糊的圖像，而不是清晰的“中間”幀。 導致錯誤圖像或毛刺圖像的這種缺陷稱為偽影。

• For video games, the extra input lag required to add motion smoothing completely ruins being able to play the game effectively. The controls feel sluggish and unresponsive, which is why most TVs offer a “Game Mode” that disable motion smoothing and other advanced picture effects.

  對于視頻游戲，添加運動平滑所需的額外輸入延遲完全破壞了能夠有效玩游戲的能力。 控件感覺遲鈍且React遲鈍，這就是為什么大多數電視提供“游戲模式”以禁用運動平滑和其他高級圖片效果的原因。

And other kinds of content, like cable news or reality TV, can still look uncanny despite not being “cinema.”

其他種類的內容，例如有線電視新聞或真人秀電視，即使不是“電影院”，也仍然看起來令人難以置信。

我有嗎？ 我如何擺脫它？ (Do I Have It? How Do I Get Rid of It?)

You’d probably notice if your TV had it enabled. If you have a newer, name brand TV, motion smoothing might be enabled by default. Most of the time, the option to turn it off is hidden in the picture settings in the menu, but if you can’t find it, you can read our guides on how to disable the effect for Samsung, LG, Sony, Vizio, and Roku TVs.

您可能會注意到您的電視是否啟用了它。 如果您擁有較新的品牌電視，則默認情況下可能會啟用運動平滑。 在大多數情況下，菜單中的圖片設置中都會隱藏著將其關閉的選項，但是如果找不到它，則可以閱讀有關如何為Samsung ， LG ， Sony ， Vizio ，和Roku電視。

Otherwise, consult your TV’s manual and support site.

否則，請查閱電視的手冊和支持網站。

翻譯自: https://www.howtogeek.com/402129/what-is-motion-smoothing-on-a-tv-and-why-do-people-hate-it/

canvas 平滑運動