1911032 - YouTube video can be restarted when paused after the last FireFox update

Status: UNCONFIRMED

(Core :: Audio/Video: Playback, defect)

Description

[TungstenX]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0

Steps to reproduce:

I noticed that before the 128 update that some videos were glitching but this issue is after the 128 update was successfully installed.

1. Start any video on YouTube. Pause video. Press play.
2. Start any video on YouTube. Kill FireFox. Restart FireFox. Restore Tabs. Press play.

Actual results:

The buffering/loading icon spins indefinitely. And the video does not play. A still frame of where the video stopped is displayed. Reloading the page (F5) doesn't fix the issue. I need to drag the process bar all the way to the start before the video can be played again (from the start)

Expected results:

The video should resume from where it was paused.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Karl Tomlinson (:karlt)]

Some changes were made since 128.0 which seemed to have improved this behavior on YouTube.
Is this still reproducing for you with 129.0?

Comment 3

[TungstenX]

Confirmed that I've updated to 129.0 and it just happened. This time, when trying to play a video that was pause for more than 20 minutes, I now get an error message that says An error has occurred (Not sure what the actual English text is. The Playback error code is:

{
  "ns": "yt",
  "el": "detailpage",
  "cpn": "7Ic-sxcF0vbf4dae",
  "ver": 2,
  "cmt": "877.078",
  "fmt": "134",
  "fs": "0",
  "rt": "4175.577",
  "euri": "",
  "lact": 1,
  "cl": "662734504",
  "mos": 0,
  "state": "899",
  "volume": 100,
  "subscribed": "1",
  "cbr": "Firefox",
  "cbrver": "129.0",
  "c": "WEB",
  "cver": "2.20240816.01.00",
  "cplayer": "UNIPLAYER",
  "cos": "X11",
  "cplatform": "DESKTOP",
  "hl": "af_ZA",
  "cr": "CH",
  "len": "1235.441",
  "fexp": "v1,23986021,18623,204121,230596,111097,16229,133212,14625955,11684381,7111,24166,12177,9954,1192,7913,18310,4420,2819,2,9359,8409,29151,2197,9996,19,2,1082,6953,11044,502,1969,6008,1538,17801,12773,172,200,8504,1903,469,2,343,1783,14,1322,4205,1823,3186,2912,7568,329,12,1942,1862,431,3154,4791,4524,5078",
  "feature": "related",
  "afmt": "251",
  "muted": "0",
  "docid": "t4EJQPWjFj8",
  "ei": "ZdLCZq3gA7mx6dsPhaPZyAc",
  "plid": "AAYgAj7fAUa2g8F7",
  "referrer": "https://www.youtube.com/watch?v=LVU-hwZgnuA",
  "sdetail": "rv:LVU-hwZgnuA",
  "sourceid": "yw",
  "of": "WIB1UJVWMTq5WyeQAVmnAQ",
  "osid": "AAAAAKjl9Jk:AOeUNAaWYE3XiTtTp1dLLEqPoRaU4Ebzug",
  "vm": "CAEQARgEOjJBSHFpSlRLOHNINjFFOVhHVmxJQ0dEZDY3UzlqalhBT1dtNDNzTU5sRXpnVDhLaWVzd2JjQU9BckJGdmV4Ty1uZWMxNkJseEN3UGREei05ODhULVI1YWRlRWhWWlNzcHlYNWYzNnBla3BZa1lQWHROa1FDZmJEVk1vUGY4eHlTT05FUjczN0FzeG83TGJvdFRYLXpKcWM0",
  "vct": "0.000",
  "vd": "NaN",
  "vpl": "",
  "vbu": "",
  "vbs": "",
  "vpa": "1",
  "vsk": "0",
  "ven": "0",
  "vpr": "1",
  "vrs": "0",
  "vns": "0",
  "vec": "null",
  "vemsg": "",
  "vvol": "1",
  "vdom": "1",
  "vsrc": "0",
  "vw": "1207",
  "vh": "679",
  "debug_error": "{\"errorCode\":\"fmt.decode\",\"errorMessage\":\"'n Fout het voorgekom. Probeer asseblief later weer.\",\"HP\":\"GENERIC_WITHOUT_LINK\",\"pM\":\"vct.877.078;vd.1235.441;vpl.;vbu.871.640-897.440;vbs.0.000-1235.441;vpa.0;vsk.1;ven.0;vpr.1;vrs.1;vns.1;vec.3;vemsg.NS_ERROR_DOM_MEDIA_FATAL_ERR (0x806e0005) - virtual RefPtr<MediaDataDecoder__DecodePromise> mozilla__GMPVideoDecoder__Decode(MediaRawData *)_ mGMP not initialized;vvol.1;vdom.1;vsrc.1;vw.1207;vh.679;mediaElem.1\",\"iA\":1,\"cpn\":\"7Ic-sxcF0vbf4dae\"}",
  "ismb": 19050000,
  "relative_loudness": "-6.520",
  "optimal_format": "720p",
  "user_qual": 0,
  "release_version": "youtube.player.web_20240813_01_RC00",
  "debug_videoId": "t4EJQPWjFj8",
  "0sz": "false",
  "op": "",
  "yof": "false",
  "dis": "",
  "gpu": "Intel(R)_HD_Graphics_400,_or_similar",
  "ps": "desktop-polymer",
  "debug_playbackQuality": "medium",
  "debug_date": "Mon Aug 19 2024 08:14:12 GMT+0200 (South Africa Standard Time)",
  "origin": "https://www.youtube.com",
  "timestamp": 1724048052993
} 

Comment 4

[TungstenX]

Still happening in build 130.0