1138140 - YouTube's HTML5 player stops buffering

Status: RESOLVED INVALID

(Core :: Audio/Video, defect, P1)

Description

[advcomp2019]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0
Build ID: 20150222232811

Steps to reproduce:

You play any YouTube HTML5 video in 720p that is longer then about 30 minutes buffer up to 30 minutes give or take 5 minutes or pause/buffer then skip to the point.

Here is a few of the videos that have reproduce this issue with: https://www.youtube.com/watch?v=1nD73h3jCHI
https://www.youtube.com/watch?v=LRNMsojbYbE
https://www.youtube.com/watch?v=PGs_jO-Cdlw

I have found this bug in Firefox 36 and Firefox 37 beta even tho Firefox 37 beta still buffers past the point it stops and ends at.


Actual results:

It stops playing and it goes straight to the end.

I have to go back to the video since YouTube saves the location and let it play off from that location or get the time stamp near where it stop and add it to the URL to get past the point that it stopped at.


Expected results:

It should buffers and plays passed this point. With Firefox 35 and 35.0.1, it gets to the same place, but it starts buffering and playing again. So, Firefox 35 and 35.0.1 works just fine.

Plus I don't see this issue with YouTube HTML5 videos that is shorter then 25 minutes so far.

Sorry if this is worded badly. I have never filed a bug before.

Comment 1

[advcomp2019]

I forgot to say it happens on clean profiles too.

Comment 2

[advcomp2019]

Forgot about 37 beta. I found out my beta install was still 36 beta.

Note to self: Never try to debug bugs when you are half asleep.

Comment 3

[tabasco]

I have found problem with this as well since release 36. (slightly different)

Steps to reproduce:

You play any YouTube HTML5 video in 720p that is longer then about 30 minutes that then buffer up to 30 minutes. When the player reaches the buffered time and is supposed to start buffering again it does so but after it continues beyond the first cached point the video freezes and the sound continues on.

This is the video that produces the problems for me right now (90 mins)
https://www.youtube.com/watch?v=TOCDKbbp6Fs

This started happening when upgrading to Firefox release 36.


Actual results:

The problem is it start to buffering more of the video, but when it reaches the first initial buffer the video freezes, while the sound continues.
If I click slightly ahead on the newly buffered video it continues with sound only, but video is frozen, until I click ahead long enough where the video starts playing with the sound. After a little while (few minutes) the same thing happens again (video freeze while sound continues).


Expected results:

It should continue to play the video with both sound and video.
This seems to only happen on longer videos where the first "initial" caching of video data does not reach the whole video (i.e on longer than 30 min videos like podcasts)

Sorry if this is worded badly. I have never filed a bug before.

Comment 4

[advcomp2019]

How is this a MSE bug when MSE is disabled?

This is what YouTube's HTML5 page says: https://dl.dropboxusercontent.com/u/4643460/firefox36youtube.PNG

Comment 5

[Jean-Yves Avenard [:jya]]

This isn't using MSE, but plain html5 (likely webm)

Comment 6

[Ralph Giles (:rillian)]

Also please select 'stats for nerds' from the right-click menu on the youtube video window. That will tell which codec/format it's using, and whether it's using the DASH(=MSE) player on any particular video.

Comment 7

[advcomp2019]

Here is 'stats for nerds' of one of the videos that I have issue with: https://dl.dropboxusercontent.com/u/4643460/youtubestats.PNG

Comment 8

[advcomp2019]

Is there any more info that you need since this bug is not fun to work with?

Comment 9

[advcomp2019]

This bug is still present in 36.0.1.  I was not sure if it got magically fixed from another bug fix.

Comment 10

[Anthony Jones (:ajones, :kentuckyfriedtakahe, :k17e)]

This is the same as bug 1131884.

Comment 11

[advcomp2019]

Anthony, how is that the same bug as mine? I have read that bug, but I don't think it is the same because mine starts playing and buffers fine to a point, but once the buffer gets to about 30 minutes mark of buffered video, my buffer just stops. Most of the time, I have to reload the video to get it started back up. The person from that other bug from what I understand, his still buffers after his stops.