<![CDATA[Incorrectly plays audio track in .mp4]]>Description: On many sites you can find .mp4 videos in html5 players. These videos may contain several audio tracks. The problem is that Opera in such files plays the last soundtrack instead of the first one, as it should be.

Steps to reproduce: I created such a file, there are 2 soundtracks in it. You can see it here: https://1drv.ms/v/s!AjFqXJlpTvaHrDuLtZR6nig20L18

Actual result: When play in Opera, you will hear a sound: "Soundtrack number two".
When play in Edge, Chrome, Firefox you will hear a sound: "Soundtrack number one".

Expected result: Must hear the sound: "Soundtrack number one".

OS: Windows 10
Version of Opera: Opera 45.0

P.S.: Recently, my partners sent me a video https://1drv.ms/v/s!AjFqXJlpTvaHpDkb9RaWuJJSnRcv I have an error and I can not see it in Opera. But in Edge, Chrome, Firefox it plays correctly.

]]>https://forums.opera.com/topic/21362/incorrectly-plays-audio-track-in-mp4RSS for NodeTue, 10 Mar 2026 20:34:55 GMTSun, 11 Jun 2017 19:27:53 GMT60<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Fri, 30 Jun 2017 05:45:08 GMT]]>The bug has been confirmed and filed as DNA-61925.

]]>https://forums.opera.com/post/124117https://forums.opera.com/post/124117Fri, 30 Jun 2017 05:45:08 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Thu, 29 Jun 2017 21:31:00 GMT]]>Another example: http://hdd.anipower.ru/Fullmetal_Alchemist/2/2.mp4
1 soundtrack - Russian.
2 soundtrack - Japan.
Edge, Chrome, Firefox plays this video with Russian language.
Opera plays this video with Japan language.
The video should play Russian.

]]>https://forums.opera.com/post/124096https://forums.opera.com/post/124096Thu, 29 Jun 2017 21:31:00 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Wed, 14 Jun 2017 03:09:38 GMT]]>I see Vivaldi plays the wrong track too.

]]>https://forums.opera.com/post/123331https://forums.opera.com/post/123331Wed, 14 Jun 2017 03:09:38 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Mon, 12 Jun 2017 15:54:15 GMT]]>Correct link: https://goo.gl/yy7bKB

]]>https://forums.opera.com/post/123265https://forums.opera.com/post/123265Mon, 12 Jun 2017 15:54:15 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Mon, 12 Jun 2017 15:52:47 GMT]]>Pulled a direct link from animaunt.ru , russian site with cartoons http://online.animaunt.ru/Anime Online/Spring Ongoing 2017/[AniMaunt.Ru] Natsume_Yuujinchou_Roku/Natsume_Yuujinchou_Roku_[06]_[AniMaunt.Ru].mp4
1 track in Russian, 2 in Japanese. Opera plays 2 track.

]]>https://forums.opera.com/post/123263https://forums.opera.com/post/123263Mon, 12 Jun 2017 15:52:47 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Sun, 11 Jun 2017 19:42:31 GMT]]>

The problem is that Opera in such files plays the last soundtrack instead of the first one, as it should be.

Do you have some other examples?

]]>https://forums.opera.com/post/123239https://forums.opera.com/post/123239Sun, 11 Jun 2017 19:42:31 GMT<![CDATA[Reply to Incorrectly plays audio track in .mp4 on Sun, 11 Jun 2017 19:38:06 GMT]]>

Recently, my partners sent me a video https://1drv.ms/v/s!AjFqXJlpTvaHpDkb9RaWuJJSnRcv I have an error and I can not see it in Opera. But in Edge, Chrome, Firefox it plays correctly.

And it has nothing to do with this topic so please open a new one for that issue.

]]>https://forums.opera.com/post/123237https://forums.opera.com/post/123237Sun, 11 Jun 2017 19:38:06 GMT