1554096 - Netmonitor does not show video request

Status: NEW

(DevTools :: Netmonitor, defect, P3)

Description

[Fernando García Gómez, stripTM]

Attachment: Captura de pantalla de 2019-05-24 10-49-42.png

It seems that the internal player is not exposing the video information.

For example, these urls in NetMonitor does not display the media data.

http://vdmedia_1.plus.es/topdigitalplus/multimedia/20195/21/20190521221758714_1558469977_video_2096.mp4

http://www.movistarplus.es/estaticos/sesiones_foo.html

Comment 1

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Thanks for the report!

I can't load the (access denied):
http://vdmedia_1.plus.es/topdigitalplus/multimedia/20195/21/20190521221758714_1558469977_video_2096.mp4

And when I load this url I see an empty page:
http://www.movistarplus.es/estaticos/sesiones_foo.html

What exactly should I do?

Can you please provide detailed instructions like e.g.

1. Load URL ...
2. Open DevTools & Select the Network panel
3. Operate the page .....
4. Check the Network panel for ...
5. etc.

Thanks!

Honza

Comment 2

[Fernando García Gómez, stripTM]

I'm sorry, the server I put in is geoblocked out of Spain.
You can try this new location
http://loschavales.org/sesiones.mp4

1. Open new tab
2. Press F12 to open Devstools and goto Net monitor
3. Enter in location bar http://loschavales.org/sesiones.mp4

I would hope that information from the media would appear, but only favicon.ico info comes out.

[Edit]
Other url, a page that includes a video http://loschavales.org/sesiones.html
Netpanel show html, jpg and ico, not vídeo

Comment 3

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Attachment: image.png

Thanks!

Here is what I am doing & seeing:

1. Open new tab
2. Press F12 to open Devtools and go to Net monitor
3. Enter in location bar http://loschavales.org/sesiones.mp4
4. Two requests appear in the Network panel (mp4 and ico)
5. Requests Disappears - This is weird, now sure why.
6. Check "Persist logs" in Network panel toolbar
7. Refresh the page, I see two requests (mp4 & ico)

I am testing with Firefox Nightly
Screenshot attached.

Do you see the same?
What Firefox version do you use?

Honza

Comment 4

[Fernando García Gómez, stripTM]

I also use Firefox Nightly, I have already found the origin.

uBlock Origin, despite having it turned off and tell me that it had not blocked anything hides the requests to media resources (the video looks good).
Deactivating the extension works as your screenshot.

Should I keep this bug open or would you prefer me to close it?

Comment 5

[Fernando García Gómez, stripTM]

Attachment: html, jpg & ico requests but not the mp4 request

Comment 6

[Fernando García Gómez, stripTM]

I'm running more tests and it's not uBlock Origin.
Only the video url in location bar needs persistent logs (I watch a reload).

1. Open new tab
2. Press F12 to open Devtools and go to Net monitor
3. Check persist log
4. Enter in location bar http://loschavales.org/sesiones.html
5. Three requests appear in the Network panel (html, jpg and ico) no mp4 signal

Comment 7

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Thanks, I was able to see the problem with the following steps:

1. Open new tab
2. Press F12 to open Devtools and go to Net monitor
3. Check Persist Logs and also Disable cache
4. Enter in location bar http://loschavales.org/sesiones.html
5. I can see the following requests:

• http://loschavales.org/sesiones.html
• http://loschavales.org/sesiones.jpg
• http://loschavales.org/sesiones.mp4
• http://loschavales.org/favicon.ico

6. Refresh the page. I am seeing only three:

• http://loschavales.org/sesiones.html
• http://loschavales.org/sesiones.jpg
• http://loschavales.org/favicon.ico
  There is no request for the mp4 - it looks like it goes from the cache (even if it's disabled) maybe from BFCache.

--

When testing this in Private mode (File -> New Private Window) it seems to be working fine

Honza

Comment 8

[Fernando García Gómez, stripTM]

Attachment: 1)Load 2) reload 3) clear & reload sequence

Yeah.
You have just encountered the problem! In a private window, the resource is always requested.
But in normal tabs the video is served from a cache for time period.

1. New profile
2. New tab
3. F12 and open Netmonitor
4. Check Persist Logs and also Disable cache
5. Load http://loschavales.org/sesiones.html
6. F5 to reload
7. Press clear button (trash can icon) and reload in Devtools

Comment 9

[joshas]

In normal mode requests to video files are displayed in Network Monitor only on first visit to website. Reloading or fully reloading (Ctrl+Shift+R) doesn't show requests to video files anymore.
In "Private Window" mode Network requests to video files are displayed correctly. Even if "Disable Cache" option is turned off, all requests, including request to video files, are displayed correctly with "cached" status. Tested on Firefox 85.0 (64-bit) on Linux.

Here's a working page for everyone to test: https://interactive-examples.mdn.mozilla.net/pages/tabbed/video.html
Interesting note: try changing URL of any video source in interactive demo. Browser will try loading it and request will appear in Network tab even in non "Private Window" mode.