Some videos don't appear in opera but work well in other browsers:
Opera 67.0.3575.97 windows 10 v.1909
Thanks in advance

@burnout426
Yes, the video plays without problem.

@burnout426 I didnt touch any flag. In fact, I didnt know the existence of that option in the browser.
I cannot see the video in a private page:

@burnout426 I reset Opera with opera://settings/reset , then reinstalled the extensions, adblocker, synchronization... and now I can see the video!!
The problem has been solved.
Thank you very much!

@diezi hola no tengo activado sitio de escritorio. Probé a borrar los datos en configuración del sitio y sigue funcionando igual de mal. Pero desinstalé ópera y lo volví a instalar y se acabó el problema. Gracias por todo.

@diezi no encuentro esas listas a las que hace referencia. Estoy hablando del ópera para Android.
En sitios excluidos no tengo nada.

@diezi no encuentro esa lista. Estoy usando ópera para Android.
Lo único que veo es dentro de bloqueo de publicidad la opción sitios excluidos que la tengo vacía.

@diezi Me pasa con periódicos, por ejemplo www.lavozdegalicia.es.
El diálogo de cookies cubre casi toda la pantalla, la "ensombrece" y no aparece el botón aceptar.

Si abres una página con el bloqueo de publicidad activado se queda colgado porque no deja mostrarse correctamente la página de diálogo de cookies

When i browse to a secure site and push in the padlock I cannot see the certificate nor the CA, only that "the connection is safe":

.

Under windows 10, opera gives you all information about certificate and CA:

From a few days ago, Opera Mobile V57.2.2830.52651 set itself the option "desktop site" to on. Then I turn off the option and the next time I open Opera the option is on.
Redmi note 8 pro MIUI 11

@burnout426 I reset Opera with opera://settings/reset , then reinstalled the extensions, adblocker, synchronization... and now I can see the video!!
The problem has been solved.
Thank you very much!

@burnout426 said in I cannot see some videos in Opera:

Do another test. Download the Opera installer, launch it, click "options", set "install path" to a folder named "Opera Test" on your desktop, set "install for" to "standalone installation", uncheck "import data from default browser", and install.
Test in that Opera, but do not enable extensions, VPN, adblocking, tracking protection or Opera Sync.

After this, in this installation the video plays ok.!

@leocg mmm... a name for the issue?