兩個(gè)情況對(duì)于這些人來說，很有必要。對(duì)于這些人來說，則沒有必要。一，先說沒有必要的1，如若已經(jīng)是新買的智能電視。能夠自由安裝軟件，安裝軟件方法，已經(jīng)知道怎么投屏，并且對(duì)當(dāng)前的投屏功能比較滿意。沒有更多的需求。則沒有必要。2，如果沒有看IPTV直播的需求，則也不需要置辦IPTV機(jī)頂盒。3，如果電視的運(yùn)行內(nèi)存足夠，電視分辨率大于2K以上。電視流暢度正常不卡，不會(huì)邊看邊罵人，電視的遙控器等功能都比較滿意，則無需更換。如果不知道怎么投屏，不知道安裝哪些電視和直播軟件，可查看以下方法。秒懂投屏：有哪些寶藏電視APP推薦？—最強(qiáng)合集秒懂投屏：買了智能電視怎么看美韓日劇？（附投屏步驟）秒懂投屏：我有一招，教你判斷電視是否能投屏！秒懂投屏：最強(qiáng)電視直播軟件每日分享—已追更50個(gè)APK二，再說有必要的情況。1，不是智能電視，或者雖然是智能電視，但是比較買了四年以前的，可以考慮增加投屏器或者機(jī)頂盒來更新?lián)Q代。2，對(duì)當(dāng)前投屏功能不滿意的，比如投屏視頻卡頓，軟件閃退，投屏黑屏等情況。3，電視不能安裝軟件，比如創(chuàng)維電視，海信電視，LG三星電視等。4，不想看電視廣告，電視內(nèi)存低安裝軟件不了或安裝不了幾個(gè)的5，電視不是安卓系統(tǒng)如三星LG或老索尼電視的。6，電視分辨率低，幀率低看球賽不過癮，看視頻很魔盒的。（額分辨率如果是720P以下的考慮直接換電視吧）。7，想要看電視直播，給老人版IPTV機(jī)頂盒的。老電視+機(jī)頂盒這些情況，有兩個(gè)硬件解決方法，不是說只能機(jī)頂盒。一個(gè)是買投屏器，二是買智能機(jī)頂盒看了以上回答，那怎么選投屏器或者機(jī)頂盒呢？有時(shí)間的，請(qǐng)?zhí)D(zhuǎn)文章。如何挑選機(jī)頂盒如何挑選機(jī)頂盒如何挑選投屏器如何挑選投屏器，投屏器推薦表沒有時(shí)間的，我直接說答案，主推的幾個(gè)投屏功能全，功能獨(dú)特，投屏性能好的投屏器和機(jī)頂盒。投屏器有哪些？電視果系列，國(guó)內(nèi)賣的最好的。機(jī)頂盒推薦更多知識(shí)寶藏，沒時(shí)間看就先收藏！投屏問題與高級(jí)玩法<a href="http://zhuanlan.zhihu.com/p/112139434" class="internal">判斷電視投屏；判斷投影投屏；IPTV投屏；投屏原理；手機(jī)投屏彈幕投屏；倍速投屏；miracast常見問題；投屏搜索不到；同屏很卡Switch連筆記本；；三星電視投屏；瀏覽器投屏；老電視投屏；抖音投屏Mac電腦投屏；豎屏倒立投屏；投屏玩法；手機(jī)投電腦；電腦投電視；電腦外接顯示器機(jī)頂盒，投屏器選購(gòu)知識(shí)如何挑選投屏器；如何挑選機(jī)頂盒；IPTV和網(wǎng)絡(luò)盒子；高配機(jī)頂盒當(dāng)貝盒子解碼 ；小米盒子解碼 ；騰訊極光盒子解碼；創(chuàng)維盒子；泰捷盒子；天貓和小米；極光3Pro和當(dāng)貝B1；極光4Pro和當(dāng)貝B3Pro；小米盒子4SPro ；Apple TV/盒子/功放機(jī)；機(jī)頂盒影響電視嗎；視頻通話的盒子；給長(zhǎng)輩買；為投屏買盒子；樂播樂投測(cè)評(píng)，機(jī)頂盒CEC功能；電視，投影選購(gòu)知識(shí)從0開始選投影；投影回音壁布線；裝軟件方便的電視；4千元65寸投屏電視；4-5千 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