[GH-ISSUE #1260] Unable to remux OGG file #8175

New Issue

GiteaMirror · 2026-04-21T20:13:48-05:00

GiteaMirror commented

2026-04-21 20:13:48 -05:00

Originally created by @ketan-ryan on GitHub (May 5, 2025).
Original GitHub issue: https://github.com/imputnet/cobalt/issues/1260

bug description

When I try to either drag a .ogg file into the window on the remux tab, or select the file from the file picker, the page flashes briefly and does not appear to have loaded the file. Going to the console from developer tools, I see
[AVFormatContext @ 0x2ab750] Unable to choose an output format for 'output.oga'; use a standard extension for the filename or specify the format manually.
at location
put_char | @ | libav-5.5.6.1.1-remux-cli.thr.mjs:662

and a printout that says "not a valid file".

I can play the file normally in Windows Media Player and VLC media plyer.

reproduction steps

Go to cobalt.tools/remux
Download the ferrous_wroughtnaught.ogg file from https://github.com/BobMowzie/MowziesMobs/blob/master/src/main/resources/assets/mowziesmobs/sounds/music/ferrous_wroughtnaut.ogg
Drag the file into cobalt.tools/redux (or choose if from the file picker)
View the observed behavior and console output

screenshots

links

https://github.com/BobMowzie/MowziesMobs/blob/master/src/main/resources/assets/mowziesmobs/sounds/music/ferrous_wroughtnaut.ogg

platform information

microsoft edge Version 136.0.3240.50 on windows 10

additional context

No response

Originally created by @ketan-ryan on GitHub (May 5, 2025). Original GitHub issue: https://github.com/imputnet/cobalt/issues/1260 ### bug description When I try to either drag a .ogg file into the window on the remux tab, or select the file from the file picker, the page flashes briefly and does not appear to have loaded the file. Going to the console from developer tools, I see [AVFormatContext @ 0x2ab750] Unable to choose an output format for 'output.oga'; use a standard extension for the filename or specify the format manually. at location put_char | @ | libav-5.5.6.1.1-remux-cli.thr.mjs:662 and a printout that says "not a valid file". I can play the file normally in Windows Media Player and VLC media plyer. ### reproduction steps Go to cobalt.tools/remux Download the ferrous_wroughtnaught.ogg file from https://github.com/BobMowzie/MowziesMobs/blob/master/src/main/resources/assets/mowziesmobs/sounds/music/ferrous_wroughtnaut.ogg Drag the file into cobalt.tools/redux (or choose if from the file picker) View the observed behavior and console output ### screenshots ![Image](https://github.com/user-attachments/assets/da603abe-8a41-44ed-96fc-a44ebc117009) ### links ```shell https://github.com/BobMowzie/MowziesMobs/blob/master/src/main/resources/assets/mowziesmobs/sounds/music/ferrous_wroughtnaut.ogg ``` ### platform information microsoft edge Version 136.0.3240.50 on windows 10 ### additional context _No response_

GiteaMirror added the bug label 2026-04-21 20:13:48 -05:00

GiteaMirror closed this issue

2026-04-21 20:13:51 -05:00

Sign in to join this conversation.

1 Participants

Notifications

Due Date

No due date set.

Dependencies

No dependencies set.

Reference: github-starred/cobalt#8175