Same problem in Canary, Working in Firefox both on Windows and Android.

I don't see this issue on Win7+Chrome 50.0.2657.0. When I played the video, I can hear two sounds, after the second sound, video silently played through, there is no freeze observed.
joserouxx@, which Windows OS are you using? 

Win7 64bit

if you have a super fast connection or a super fast CPU? maybe the buffering to 100% won't cause an issue; but a temporary freeze on windows is not my main issue. The Chrome Android side of this bug breaks my app since the timeupdate doesn't fire anymore after this point, so I can't auto pause the video at pre-defined cues.

If you can try it on android:  https://defi-math.ca/experimentation/ 
click:
Etape-A → kimmath → kim math animaux 1 à 10
After the second sound fx no more timeupdate events.

Thanks.

I can confirm that sometimes the buffering to 100% happens really fast so you won't notice the freeze, but when it takes a few seconds it does completely freeze while buffering. The questions this problem raise are: Is freezing while buffering normal?, and why suddenly buffering from ~30% to 100% ? My guess is this is also what's happening on Android and causes the timeupdate issue.

Thank you for providing more feedback. Assigning to requester "yiningc@chromium.org" for another review.

For more details visit https://sites.google.com/a/chromium.org/dev/issue-tracking/autotriage - Your friendly Sheriffbot

joserouxx@, I looked at the website in comment #4, The video playback auto pause every 1~2 seconds. I tried on Nexus 6(Android 5.1.1+Chrome 50.0.2661.9), onVideoUpdate event is fired all the time until video auto pause. Can you tell me why video auto pause? It also auto pause on Chrome of Mac and Safari.

Hi, the problem exist both on my nexus 5 and nexus 6P; (48.0.2564.95)
you have to look at that particular video I'm talking about (see comment #4 below the link), as other videos seem to be fine.

The pauses are because this is basically a slide show... sometimes text may appear at a pause.

Just ckecked; problem also happens also with chrome 49 and 50.

I am unable to reproduce the above issue on Windows (7 & 10) with chrome version 50.0.2661.94(Stable), 51.0.2704.22(Beta) & 52.0.2716.0, followed the steps provided in comment#4. 
System info: 8GB Ram with Intel HD graphics card. No Freeze observed, the video get autopause after few secs & gets played till the end which click on play button.

Removing Needs-Confirmation label for now.

small typo: the video get autopause after few secs & gets played till the end when click on play button after the autopause.

@Can you check on Windows on latest chrome stable version '50.0.2661.94' ?

Concerning the freeze while buffering to 100% on windows:

- Bug still exists in chrome 49 and 52 (win10/64), and chrome 50 (win7/64) – see note below.
- Bug does *not* exist in Vivaldi (chromium 50).
- My two computers cannot update stable release as today (Échec du lancement de la vérification des mises à jour (code d'erreur 4: 0x80070005 -- system level))

Please just check if video is bufferring to 100% when the rabbit appears the first time (no need to use web app for this, use direct link to video so you can see the *buffering to 100%* which is the root cause of the problem on windows). The playback freezes *while* buffering so if for you it's instantly at 100% like I have seen sometime, you won't notice the freeze.)

The bug also still breaks timeupdate on Android (nexus 6p), here you need to use the web app to see the problem – it should continue to trigger pauses but don't.

of course I meant Chrome 50 on Android – Firefox works as intended. 

Possibly a loading issue. Does Multibuffer help with this?

Thank you for providing more feedback. Adding requester "ashejole@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I think this is fixed with multibuffer. Or I can't repro locally. If someone who can repro can try with "--enable-features=use-new-media-cache" that'd be helpful.

joserouxx@gmail.com, after upgrade to M52, can you still repro this issue? if it still repro, can you use flag in #19 to see if it fix your issue?

sory for the late response... Yes, the issue is still there in canary 52 on Windows.

hmmm, I forgot to set the flag on canary; now the issue still there but something that may be of interest for you happens: 

first time behaviour is the same – chrome preloads almost half of video (according to the buffer bar), and freeze to buffer to 100% at the problematic point, 
but then if I shift + refresh I don't see any buffer bar, and at the problematic time the already played portion (blue bar) disappears, then video continues without any gray or blue bars...

Thank you for providing more feedback. Adding "Needs-Review" label for tracking.

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joserouxx@gmail.com, please try with flag in #19.

kind ping, joserouxx@gmail.com, did you try with flag in #19? with the flag, does this bug still repro?

@yini please see #22, still the same, just re-tested on canary / Windows with flag.

Thank you for providing more feedback. Adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I am still not able to repro this bug on Chrome 53.0.2774.3 dev build + Win7. The to-100%-buffering happens at 0:23 timestamp, it take a while (around 2~3 seconds), while buffering, the video not freeze. after 100% buffering, the video resumes. 
I don't see where the problem is. 

@yini You say "the video not freeze" and after you say it "resumes"?

I see you guys seem to focus on the Windows problem, but since there's also a more important (breaking functionality) and more evident Android side to this bug, wouldn't it be more productive to investigate this instead?

joserouxx@gmail, please clarify if this is a bug in desktop OS or on android. On ddesktop (both Mac and Windows), I don't see there is any issues, as said in #30. If you mean this is an issue in Android, please upgrade to the latest Android Chrome build. There is major change on Chrome Android since Chrome 51. I am using Chrome53.0.2782.9 on Nexus6, I don't see any issue in playing the repro video https://defi-math.ca/experimentation/documents/Etape-A/kimmath/kim_math_animaux.mp4.

You had to use the player web app to see the bug,  but I'm happy to report
that the issue seem fixed, on latest chrome (51.0.2704.90)/ nexus 6p and
chrome dev / nexus 5. (but not in 51.0.2704.81)

For Windows I have given hope,  and frankly I do not care much for a little
freezing...  To be honest I only mentioned the windows bug so you guys
could maybe understand better what was going on on the android side;