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Chromeで視聴画面を埋め込みにするとYoutubeが再生されない #373

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horimasumi opened this issue Apr 10, 2021 · 33 comments · Fixed by #379
Closed

Chromeで視聴画面を埋め込みにするとYoutubeが再生されない #373

horimasumi opened this issue Apr 10, 2021 · 33 comments · Fixed by #379
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bug Something isn't working

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@horimasumi
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horimasumi commented Apr 10, 2021

そのバグについ

  1. 視聴画面を埋め込みにするとYoutubeが再生されない.
  2. Vimeo,Wowozaは再生される
  3. 教員権限,学生権限ともに発生する.
  4. Mac+Chrome+YouTubeでこの現象が発生する.
  5. Mac+Safari+YouTubeでは発生しない.

再現手順

以下の,
https://trial.chilos.jp/course/view.php?id=112
youtube(埋め込み)
wowza(埋め込み)
で,確認できる.

スクリーンショット

YouTube
image

デスクトップ再現環境 (下記をうめてください):

  • OS: [e.g. iOS]
  • ブラウザ: [e.g. chrome, safari]
  • Version: [e.g. 22]

スマートフォン再現環境 (下記をうめてください):

  • OS: macOS Big Sur ver 11.2.3
  • ブラウザ: Google Chrome ver 89.0.4389.114(Official Build) (x86_64)
@horimasumi horimasumi added the bug Something isn't working label Apr 10, 2021
@horimasumi horimasumi changed the title Chromeで視聴画面を埋め込みにするとYoutubeとWowza動画が再生されない Chromeで視聴画面を埋め込みにするとYoutubeが再生されない Apr 10, 2021
@szshirai
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Blackboardでの状況について、以下に記載させていただきます。

Blackboard内にiframeで埋め込む形で本システムを表示すると、以下の環境で動画が再生されない(再生ボタンを押してもずっとローディング中(回転矢印)が表示され動画が再生されない)不具合が発生します。

 - ブラウザ:Chrome(89.0.4389.114 (最新))
        -> 特に拡張機能などで広告等をブロックするような設定はしていない
 - OS:Windows 10, macOS (バージョンの確認ができておりません)

同じ環境でも不具合が発生する場合と発生しない場合があり、
私の環境(Chrome最新 + macOS (Catalina 10.15.7))でも再現ができていません。

Blackboardでは、学生権限で起動すると埋め込み表示になりますが、
教員権限で起動すると新しいページで表示されますので本不具合は発生しません。

解決方法としては、新しいページにリダイレクトする形でシステムを起動する必要があると思います。

@knokmki612
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環境

  • Linux (Fedora Silverblue 33)
  • Chromium 89.0.4389.90

手順

https://trial.chilos.jp/course/view.php?id=112
youtube(埋め込み)

にて、自動再生が開始されないことを確認しました

@kou029w kou029w self-assigned this Apr 12, 2021
@dynamis
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dynamis commented Apr 12, 2021

  • Mac Edge では再現せず
  • Mac (Big Sur) Chrome 89.0.4389.114(Official Build) (x86_64)で再現する

再現時の youtube iframe の中身:

image

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\u003d\u003d\",\"interpreterUrl\":\"//www.google.com/js/th/PCz29Lvjv9iaCNP5coIQPo4BKHI_lMQmMeK-DYONFFE.js\"}}},\"videoFlags\":{\"playableInEmbed\":true,\"isCrawlable\":true}}","controls":"HIDE","fs":false,"hl":"ja","loop":false,"modestbranding":true,"rel":"HIDE_OR_SCOPED","showinfo":false,"video_id":"G3yNvuCWDtU"},"POST_MESSAGE_ORIGIN":"https://f-omega.vercel.app","VIDEO_ID":"G3yNvuCWDtU","WIDGET_ID":1,"SERIALIZED_CLIENT_CONFIG_DATA":"CJCVz4MG","ROOT_VE_TYPE":16623});</script><script nonce="cwBpFVaV+PtI3s9ZVcGcWA">var yterr = yterr || true;</script><script src="/s/player/d2ff46c3/www-embed-player.vflset/www-embed-player.js" nonce="cwBpFVaV+PtI3s9ZVcGcWA"></script><script src="/s/player/d2ff46c3/player_ias.vflset/ja_JP/base.js" nonce="cwBpFVaV+PtI3s9ZVcGcWA"></script><script src="/s/player/d2ff46c3/fetch-polyfill.vflset/fetch-polyfill.js" nonce="cwBpFVaV+PtI3s9ZVcGcWA"></script><title>YouTube</title><link rel="canonical" href="https://www.youtube.com/watch?v=G3yNvuCWDtU"></head><body class="date-20210411 ja_JP ltr  site-center-aligned site-as-giant-card webkit webkit-537" dir="ltr"><div id="player"></div><script nonce="cwBpFVaV+PtI3s9ZVcGcWA">writeEmbed();</script><script nonce="cwBpFVaV+PtI3s9ZVcGcWA">ytcsi.info('st',  28.0 );</script><noscript><div class="player-unavailable"><h1 class="message">An error occurred.</h1><div class="submessage"><a href="https://www.youtube.com/watch?v=G3yNvuCWDtU" target="_blank">www.youtube.com</a> での動画の視聴をお試しください。また、お使いのブラウザで 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追記: これは再生できるケースでも同じ応答が返ってきてたかも。単にプレビューで表示するとエラー画面のように見えるだけで。

@kou029w
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kou029w commented Apr 12, 2021

自動再生ができない件については、Linux Chrome 89.0.4389.114(Official Build) (x86_64)でも再現することを確認。
再現手順としては、シークレットモード、ユーザーを追加、またはゲストユーザーで起動しセッションをリセット。その後当該ページの「youtube(埋め込み)」リンクから起動する。
google-chrome --autoplay-policy=no-user-gesture-required 等で起動し chrome://media-engagement の Autoplay Policy を変更することで回避可能なことを確認。
MEI が原因であると仮定し、YouTubeの動画ページに何度かアクセスしスコアを高める (Is High)、あるいはYouTubeのサインインを行うなど試したが、残念ながら "An error occurred." が得られ失敗。MEIスコアに加え他の要因が含まれることを示唆。

@kou029w
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kou029w commented Apr 12, 2021

残念ながら "An error occurred." が得られ失敗

これはあくまで @dynamis さんの報告・追記にあるとおりDevTools Preview パネルで確認しただけ

@dynamis
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dynamis commented Apr 12, 2021

これはあくまで @dynamis さんの報告・追記にあるとおりDevTools Preview パネルで確認しただけ

ごめん、先ほどの DevTools Preview, Chrome 別ウィンドウ表示や Edge 埋め込み表示で再生できているときも同じ URL アクセスでエラーと表示されて、単に Preview でアクセスすると (JS 実行されないなどの制限の結果) そのように描画されているだけで実際の処理としてエラーになっているのかどうかの判断には使えなかったかも。

@kou029w
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kou029w commented Apr 12, 2021

JS 実行されないなどの制限の結果

そうかもですね。たしかに手元で問題ないときも同じようなものが表示されました。
厄介で困った感じの問題ですね 💦
というか、そもそもなぜユーザーが「既定で自動再生をする・しない」を設定できるホワイトリスト・ブラックリスト方式にしてくれないんだ、Googleよ。

@horimasumi
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@kou029w

自動再生ができない件については、Linux Chrome 89.0.4389.114(Official Build) (x86_64)でも再現することを確認。

「自動」再生ができない,ではなく,再生できない,という現象です.念のため.

@kou029w
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kou029w commented Apr 12, 2021

「自動」再生ができない,ではなく,再生できない,という現象です.念のため.

自動再生されないことに加え、再生ボタンを押しても再生しない、ということですよね。コメントありがとうございます。

@dynamis
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dynamis commented Apr 12, 2021

chrome://media-engagement/ で www.youtube.com が Is High = Yes になっている chrome プロファイルでも再生出来ないことを確認しました。そもそも MEI って ifreme のドメインじゃなくてトップのドメインに対してカウントされるんじゃないかと思うのですが。

@dynamis
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dynamis commented Apr 12, 2021

https://trial.chilos.jphttps://f-omega.vercel.app (ついでに https://www.youtube.com ) での EMI も Is High = Yes にしても再生できないことを確認。
やはり自動再生の有無には関係してくるが今回の再生できない問題は別っぽい

@dynamis
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dynamis commented Apr 12, 2021

再生できない環境で iframe の入っている div 以外の poster フレームなどの div を全部削除したらクリックが通って再生可能なことを確認。

  • videojs の方が再生既にしている気持ちになっているのか処理が狂ってるのかクリックしても youtube 側に再生命令を送れない状態になっている
  • videojs が上に被せたレイヤーがクリックイベントを奪ってしまい youtube の素の iframe の再生ボタンを押せない

という状態になっているのかな。

@kou029w
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kou029w commented Apr 12, 2021

@dynamis 詳しい考察と調査ありがとうございます! なるほど。

@dynamis
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dynamis commented Apr 12, 2021

具体的には <div class="vjs-poster" tabindex="-1" aria-disabled="false" style="background-image: url(&quot;https://img.youtube.com/vi/G3yNvuCWDtU/maxresdefault.jpg&quot;);"></div> が邪魔してるっぽい

@dynamis
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dynamis commented Apr 12, 2021

  • ぐるぐる回ってるスピナーは youtube ではなく video.js のもので <div class="vjs-loading-spinner" dir="ltr"><span class="vjs-control-text">Video Player is loading.</span></div> である。
  • .vjs-poster を削除せずとも一時的に style 変えて位置ずらして裏の youtube クリックして再生状態に遷移したらあとは .vjs-poster の style 戻しても大丈夫
  • youtube は普通に動画のバッファリングを行って再生開始の待機をしている

ということからも video.js 的には再生開始しているつもりになってるが再生できてないよねって気持ちだろうか。なんもコンソールエラー出ないのは video.js の設定とかで変えられないだろうか。video.js デバッグしたいお気持ち。

@dynamis
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dynamis commented Apr 12, 2021

単純に CC としては自分がトップフレームではなくブラウザが Chrome である時は autoplay しようとしない、もしそれでも videojs が勝手に追加する poster frame がクリックイベント奪って邪魔なら poster frame 表示しないようにする (どうやって出来るのかは未確認) という形にするのが良さそうに思う。

YouTubePlayer.tsx で autoplay options 受け渡してるけど poster も渡せそうに見える。その辺りでの対応だろうか。
https://github.com/npocccties/ChibiCHiLO/blob/master/components/organisms/Video/YouTubePlayer.tsx
https://docs.videojs.com/docs/guides/options.html

以下だらだらメモ:

videojs-youtube の issue
videojs/videojs-youtube#575
videojs/videojs-youtube#536
こっちは autoplayの issue で関係ない
videojs/videojs-youtube#532

CC の iframe が allow="autoplay" 付与されていないのに (youtube の iframe でだけ allow="autoplay" していて) ユーザ操作無しで play() 読んで NotAllowedError で怒られているが、videojs-youtube がそのようなケースを想定していないから問答無用で .vjs-loading-spinner を回して再生開始待機状態かつ .vjs-poster でユーザが直接再生ボタンを押すのも邪魔している感じ?

CC が埋め込みされているときには autoplay 勝手にしようとしないのが正しそうに思うが videojs-youtube のコードをちゃんと読んで修正しないと出来なさそう。

ちなみに style="pointer-events: none" を .vjs-poster に付与すると邪魔されなくなるから手動クリックで再生開始はできるようになるが、動画の真ん中のボタン部分じゃないとダメ& spinner が先に回ってる状態はやっぱおかしいという形。そもそも videojs 側が自前で poster frame なんか出さなくて良いんじゃなかと思った。

ブラウザの挙動が日々変わる分野で更新されてない古いライブラリ使うと罠がありますね...

@kou029w
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kou029w commented Apr 13, 2021

不具合の実証コード: https://dezz7.csb.app/
トップとvideo.jsの要素を含むiframeでオリジンが異なりallow=autoplay等をiframeに指定せずMEIをリセットさせAutoplay Policyに違反させると、再生ボタンが機能せず。

@kou029w
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kou029w commented Apr 13, 2021

MoodleのIssueを見ているとifameにallow=autoplayを加えるというものがありますね。
https://tracker.moodle.org/browse/MDL-65613?page=com.atlassian.jira.plugin.system.issuetabpanels%3Aall-tabpanel
Moodleについてはバージョンに依っては解決する問題かもしれないです。

@kou029w kou029w removed their assignment Apr 13, 2021
@kou029w
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kou029w commented Apr 13, 2021

videojs が勝手に追加する poster frame がクリックイベント奪って邪魔なら poster frame 表示しないようにする

CSSで消すと、たしかにYouTubeの再生ボタンを表示させ機能させることができますね。
実証コード: https://dezz7.csb.app/disable-poster.html

.video-js .vjs-poster {
  display: none !important;
}
.video-js .vjs-big-play-button {
  display: none !important;
}
.video-js .vjs-loading-spinner {
  display: none !important;
}

少し乱暴な実装ですがとにかく消せました! 🎉

YouTubePlayer.tsx で autoplay options 受け渡してるけど poster も渡せそうに見える。その辺りでの対応だろうか。

Optionsからは変更できませんでした。

Screenshot from 2021-04-13 17-01-26

@dynamis
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dynamis commented Apr 13, 2021

少し乱暴な実装ですがとにかく消せました! 🎉

やっぱ取り急ぎという事でいうとそんな感じですよね。

iframe 埋め込みされており (トップフレームではない) かつ Chrome の場合だけスタイル指定追加が妥当な落とし所か。

そもそも iframe 埋め込みする側で、Moodle 3.6 or later みたいに

MoodleのIssueを見ているとifameにallow=autoplayを加えるというものがありますね。

としてくれるのが本来のあるべき姿で、CC 側が iframe 埋め込まれ対応をするというのはちょっと無茶がある所なので綺麗な実装にならないのも仕方なさそうですね。そもそもサービス側のプレイヤーを埋め込むという方針を採る異常はサービスとブラウザによってバラバラなのは避けがたく、このパターンの時だけのために videojs を作り直す意味はないし。

YouTubePlayer.tsx で autoplay options 受け渡してるけど poster も渡せそうに見える。その辺りでの対応だろうか。

Optionsからは変更できませんでした。

思いつきで書くだけ書いて追記し忘れてました。poster オプションが画像ファイル名しかなく「消す」という指定方法が定義されてなかったので無理かなとも思った&videojs youtube のコードチラ見したらポスターフレームは明示的に上書きしたらそれを使うがそうじゃなければ img.youtube.com 使う形でこれは消せなさそうなコードだなという感じで確実無理でした。m(_ _)m

@yabuki
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yabuki commented Apr 13, 2021

これ、hackのたぐいなので、将来も動くとは保証できないやつですよね....

@kou029w
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kou029w commented Apr 13, 2021

Video.jsやvideojs-youtubeのバージョンには依存しそうですね。
CHiBi-CHiLOの特性上YouTube等外部サービスに依存しており、また使用しているライブラリvideojs-youtubeが高い頻度ではメンテナンスされていない現状を踏まえると、こういう対応になってしまうのも仕方ないかなという気もします。

@horimasumi
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私のMacでも確認できました.トピック1つ1つをクリックする必要はありますが,クリックすると再生されますね.
一番手軽な変更は,スタイルシートを単純に変更する,と言うことになると思うのですが,そうすると,Youtubeやiframeでない場合も,適用されることになると思うのですが,なにか,弊害は発生しますか?

@kou029w
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kou029w commented Apr 14, 2021

@horimasumi 確認ありがとうございます。

弊害

Wowzaのプレイヤーとの見た目の一貫性が損なわれる、という点以外に、機能的には特に見つかっていません。
ボタンのクリックイベントはもともと使っておらず、また手元の開発サーバーで実験した範囲ではplayイベント等ログトラッキングに必要なイベントは問題なく発火され取得できているようです。
運用上はWebブラウザーと使用しているライブラリのアップデートがあればその都度確認し場合に依ってはメンテナンスしていく必要があるだろうという点でしょうかね。

@ties-makimura
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@kou029w 念のため確認ですが,CSSを変更ても,自動再生される場合は,Youtube , Wowza 関係なく自動再生される理解で正しいでしょうか?

@kou029w
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kou029w commented Apr 14, 2021

@ties-makimura

@kou029w 念のため確認ですが,CSSを変更ても,自動再生される場合は,Youtube , Wowza 関係なく自動再生される理解で正しいでしょうか?

はい、正しいです。

@horimasumi
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@kou029w さん,それでは,スタイルシートを変更して,一旦このイシューはクローズにしたいと思います.
よろしくお願いします.

@kou029w
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kou029w commented Apr 14, 2021

@horimasumi @ties-makimura #379 にて対応しました。ご確認ください。

@horimasumi horimasumi reopened this Apr 14, 2021
@horimasumi
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ブラックボードの学習モジュールに埋め込んだ場合,全画面ボタンが機能しない模様,ただしMoodleの埋め込みでは機能している.
image

@horimasumi
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horimasumi commented Apr 14, 2021

Blackboad特有の現象であった.対応は別途,検討する.

@dynamis
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dynamis commented Apr 15, 2021

埋め込み側のiframeタグでその中でフルスクリーンボタンが使えるかどうかは制御します(iframe内で出来ることはどんどん制限が厳しくなっており、そういう仕様です)。

埋め込まれる側であるCC側ではなにも出来ません。

@horimasumi
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@dynamis
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dynamis commented Apr 19, 2021

フルスクリーンボタンの話は #382 に分けました

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