add seek and speed controls to media player

When listening to podcast, it is usual to want to speed up the playback.
miniflux#2521 was addressing the need globally, this PR
allow to address it for just the current open enclosure media. (no save) Some Browser
already include this control directly, but firefox does not (directly anyway).

Also, it is often useful to be able to skip chunk of a podcast, to skip commercials
for example, or get back a bit because we couldn't hear the last part. I added rudimentary
seek controls with the usual +/-10 and 30 seconds chuck size. This is pretty handy when podcast
are very long and using the seek bar is way too tricky to just skip 30s.

As always, I'm French and could only provide English and French translation for the few
text I added in the locale/translations files. Any help is welcome.

Tested mostly on Firefox (121.0) and quickly on Vivaldi(6.5.3206.53), chrome based.

Fixes: miniflux#1845 miniflux#1846

internal/locale/translations/de_DE.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Abonnement kann nicht durch RSS-Bridge erkannt werden: %v.",
     "error.feed_format_not_detected": "Das Format des Abonnements kann nicht erkannt werden: %v.",
     "form.prefs.label.media_playback_rate": "Wiedergabegeschwindigkeit von Audio/Video",
-    "error.settings_media_playback_rate_range": "Die Wiedergabegeschwindigkeit liegt außerhalb des Bereichs"
+    "error.settings_media_playback_rate_range": "Die Wiedergabegeschwindigkeit liegt außerhalb des Bereichs",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/el_EL.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Ταχύτητα αναπαραγωγής του ήχου/βίντεο",
-    "error.settings_media_playback_rate_range": "Η ταχύτητα αναπαραγωγής είναι εκτός εύρους"
+    "error.settings_media_playback_rate_range": "Η ταχύτητα αναπαραγωγής είναι εκτός εύρους",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/en_US.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Playback speed of the audio/video",
-    "error.settings_media_playback_rate_range": "Playback speed is out of range"
+    "error.settings_media_playback_rate_range": "Playback speed is out of range",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/es_ES.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Velocidad de reproducción del audio/vídeo",
-    "error.settings_media_playback_rate_range": "La velocidad de reproducción está fuera de rango"
+    "error.settings_media_playback_rate_range": "La velocidad de reproducción está fuera de rango",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/fi_FI.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Äänen/videon toistonopeus",
-    "error.settings_media_playback_rate_range": "Toistonopeus on alueen ulkopuolella"
+    "error.settings_media_playback_rate_range": "Toistonopeus on alueen ulkopuolella",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/fr_FR.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Impossible de détecter un flux RSS en utilisant RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Impossible de détecter le format du flux : %v.",
     "form.prefs.label.media_playback_rate": "Vitesse de lecture de l'audio/vidéo",
-    "error.settings_media_playback_rate_range": "La vitesse de lecture est hors limites"
+    "error.settings_media_playback_rate_range": "La vitesse de lecture est hors limites",
+    "enclosure_media_controls.seek" : "Avancer/Reculer :",
+    "enclosure_media_controls.seek.title" : "Avancer/Reculer de %s seconds",
+    "enclosure_media_controls.speed" : "Vitesse :",
+    "enclosure_media_controls.speed.faster" : "Accélérer",
+    "enclosure_media_controls.speed.faster.title" : "Accélérer de %sx",
+    "enclosure_media_controls.speed.slower" : "Ralentir",
+    "enclosure_media_controls.speed.slower.title" : "Ralentir de %sx",
+    "enclosure_media_controls.speed.reset" : "Réinitialiser",
+    "enclosure_media_controls.speed.reset.title" : "Réinitialiser la vitesse de lecture à 1x"
 }

internal/locale/translations/hi_IN.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "ऑडियो/वीडियो की प्लेबैक गति",
-    "error.settings_media_playback_rate_range": "प्लेबैक गति सीमा से बाहर है"
+    "error.settings_media_playback_rate_range": "प्लेबैक गति सीमा से बाहर है",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/id_ID.json

@@ -512,5 +512,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Kecepatan pemutaran audio/video",
-    "error.settings_media_playback_rate_range": "Kecepatan pemutaran di luar jangkauan"
+    "error.settings_media_playback_rate_range": "Kecepatan pemutaran di luar jangkauan",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/it_IT.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Velocità di riproduzione dell'audio/video",
-    "error.settings_media_playback_rate_range": "La velocità di riproduzione non rientra nell'intervallo"
+    "error.settings_media_playback_rate_range": "La velocità di riproduzione non rientra nell'intervallo",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/ja_JP.json

@@ -512,5 +512,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "オーディオ/ビデオの再生速度",
-    "error.settings_media_playback_rate_range": "再生速度が範囲外"
+    "error.settings_media_playback_rate_range": "再生速度が範囲外",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/nl_NL.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Afspeelsnelheid van de audio/video",
-    "error.settings_media_playback_rate_range": "Afspeelsnelheid is buiten bereik"
+    "error.settings_media_playback_rate_range": "Afspeelsnelheid is buiten bereik",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/pl_PL.json

@@ -546,5 +546,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Prędkość odtwarzania audio/wideo",
-    "error.settings_media_playback_rate_range": "Prędkość odtwarzania jest poza zakresem"
+    "error.settings_media_playback_rate_range": "Prędkość odtwarzania jest poza zakresem",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/pt_BR.json

@@ -529,5 +529,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Velocidade de reprodução do áudio/vídeo",
-    "error.settings_media_playback_rate_range": "A velocidade de reprodução está fora do intervalo"
+    "error.settings_media_playback_rate_range": "A velocidade de reprodução está fora do intervalo",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/ru_RU.json

@@ -546,5 +546,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Скорость воспроизведения аудио/видео",
-    "error.settings_media_playback_rate_range": "Скорость воспроизведения выходит за пределы диапазона"
+    "error.settings_media_playback_rate_range": "Скорость воспроизведения выходит за пределы диапазона",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/tr_TR.json

@@ -496,5 +496,14 @@
   "time_elapsed.years": ["%d yıl önce", "%d yıl önce"],
   "time_elapsed.yesterday": "dün",
   "tooltip.keyboard_shortcuts": "Klavye Kısayolu: %s",
-  "tooltip.logged_user": "%s olarak giriş yapıldı"
+  "tooltip.logged_user": "%s olarak giriş yapıldı",
+  "enclosure_media_controls.seek" : "Seek:",
+  "enclosure_media_controls.seek.title" : "Seek %s seconds",
+  "enclosure_media_controls.speed" : "Speed:",
+  "enclosure_media_controls.speed.faster" : "Faster",
+  "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+  "enclosure_media_controls.speed.slower" : "Slower",
+  "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+  "enclosure_media_controls.speed.reset" : "Reset",
+  "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/uk_UA.json

@@ -546,5 +546,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "Швидкість відтворення аудіо/відео",
-    "error.settings_media_playback_rate_range": "Швидкість відтворення виходить за межі діапазону"
+    "error.settings_media_playback_rate_range": "Швидкість відтворення виходить за межі діапазону",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/zh_CN.json

@@ -512,5 +512,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "音频/视频的播放速度",
-    "error.settings_media_playback_rate_range": "播放速度超出范围"
+    "error.settings_media_playback_rate_range": "播放速度超出范围",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }

internal/locale/translations/zh_TW.json

@@ -512,5 +512,14 @@
     "error.unable_to_detect_rssbridge": "Unable to detect feed using RSS-Bridge: %v.",
     "error.feed_format_not_detected": "Unable to detect feed format: %v.",
     "form.prefs.label.media_playback_rate": "音訊/視訊的播放速度",
-    "error.settings_media_playback_rate_range": "播放速度超出範圍"
+    "error.settings_media_playback_rate_range": "播放速度超出範圍",
+    "enclosure_media_controls.seek" : "Seek:",
+    "enclosure_media_controls.seek.title" : "Seek %s seconds",
+    "enclosure_media_controls.speed" : "Speed:",
+    "enclosure_media_controls.speed.faster" : "Faster",
+    "enclosure_media_controls.speed.faster.title" : "Faster by %sx",
+    "enclosure_media_controls.speed.slower" : "Slower",
+    "enclosure_media_controls.speed.slower.title" : "Slower by %sx",
+    "enclosure_media_controls.speed.reset" : "Reset",
+    "enclosure_media_controls.speed.reset.title" : "Reset speed to 1x"
 }