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Premiere Pro creates 3 files when exporting an MP4 (.aac, .m4v, and .mp4)

Explorer ,
Jan 25, 2025 Jan 25, 2025

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I've seen Premiere Pro do this while rendering an mp4 file. It temporarily creates 3 files, then they all get merged at the end when the export is complete.

 

Now (in both version 2025 and 2025.1) the 3 files don't get merged at the end, they just stay like they are in the screenshot attached. This is after Premiere has finished exporting and the dialogue box has been gone for over a few mins.

 

I'm using an RTX 4080 super with latest driver, i9 14900k, 120gb DDR5 ram, and a Samsung T7 SSD.

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correct answers 1 Pinned Reply

Adobe Employee , Jan 27, 2025 Jan 27, 2025

Hi @Will27540326c9gz 

Thank you for taking your time to file a bug report. It could help the team to see the file export settings. If you could also utilize the  link here  How do I write a bug report and follow the steps to providing more information about your bug, we will gladly take a look.

Thank you

Ian

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Community Expert ,
Jan 25, 2025 Jan 25, 2025

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You need to show your export settings and some info on your files. I just tried tried it and it's normal, 1 file.

Are you using the Blu-ray export?

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Adobe Employee ,
Jan 27, 2025 Jan 27, 2025

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Hi @Will27540326c9gz 

Thank you for taking your time to file a bug report. It could help the team to see the file export settings. If you could also utilize the  link here  How do I write a bug report and follow the steps to providing more information about your bug, we will gladly take a look.

Thank you

Ian

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Explorer ,
Jan 27, 2025 Jan 27, 2025

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Hi @IanB_360 

 

Firstly, I have no idea why, but this is only happening with select projects. Some projects don't have this issue.

 

Export settings: MP4, CBR 30mbp, UHD, render in maximum render quality/bit depth.

 

I did follow that link and provided all the relevant details in my post (PC specs, Premiere version, video format). If there's something I misssed, let me know.

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Explorer ,
Jan 27, 2025 Jan 27, 2025

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@MyerPj Just standard H.264, CBR 30mbp, UHD, render in maximum render quality/bit depth. 

 

Files: h.265 10bit422files from Sony FX3. 

 

This issue is only occuring randomly in one or two of my projects, while in other projects it renders perfectly fine (using the exact same footage format and export settings).

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Community Expert ,
Jan 27, 2025 Jan 27, 2025

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Strange, so it happens only on some projects, but the projects are similar using the same type of footage, and the same export settings. Is that it? Can you provide a screenshot of the Export screen.

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Explorer ,
Jan 28, 2025 Jan 28, 2025

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@MyerPj Yup. Uploaded screenshots in the post's description. 

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Community Expert ,
Jan 28, 2025 Jan 28, 2025

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Well, at least it's not a show stopper. Does the video file have the linked audio in addition to the separate file?

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Explorer ,
Jan 29, 2025 Jan 29, 2025

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@MyerPj You're right, it's not a show stopper. I ended up exporting to Prores 422 HQ then converted that to h.264 in ME.

 

No, the video file is separated from the audio and whatever the 3rd file is. So it's unusable.

 

I figured it might be a bug with this project file because it's only happening in 2 of 8 of my current projects, so I tried to create a new project, then import the old project into it. But then I ran into another problem where Premiere is not automatically linking all the files after I point it to one of them in the linking menu.

 

If I ever find a solution I'll post it here, but for now I don't have the time to dwell on it.

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Community Expert ,
Jan 29, 2025 Jan 29, 2025

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That is kind-of-a show stopper, if you must export to h.264 since the audio is not there. I tried it on a couple of projects and it works OK for me.

 

Exporting to ProRes is a real good solution, it's visually lossless, and then just make deliverables from that, h.264/5

 

Well done! 🙂

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