Premiere Pro 2025 Version 25.0.0 doesn't accept .mts files with sound?

Forum|Forum|1 year ago
December 3, 2024
4 replies
12096 views

We just got a new PC with Premiere Pro 2025 Version 25.0.0 (Build 61). When I import .mts files and drag them onto the timeline there is no audio track (on a known good file - checked in VLC). We've got an older system with Version 24.6.1 (Build 2) that doesn't have any trouble with the same .mts file. I was able to convert the file to .mp4 using VLC and edit the program successfully in 25.5.0, but that's time consuming. Is there a way to get 25.0.0 to accept .mts files?

PC - Dell Precision 5860 Tower

OS - Windows 11 Pro for Workstations, Version 24H2

Basic steps - Import known good .mts file, drag from bin to timeline

Expected results - A video track AND an audio track

Formats

Correct answer Ann Bens

Its not a bug.

If you have a brand new W 11 installed, than that is correct: no sound.

W11 24H2 does not support ac3 anymore.

You will have to download or buy the ac3 codec and install it into Windows 11.

frankb64691954

Participant

Follow the steps on the link below to install the AC3 and AC4 codecs. Easy to do. Virus free. If you have tried to import files with AC3 audio into Premiere - make sure to delete them from the project - CLEAR THE ENTIRE MEDIA CACHE - and then after instaling the codecs below, reboot, restart Premiere - and then re-import the the files. You will have sound on them.

https://pouaridis.com/microsoft/fixing-ac-3-audio-issues-in-windows-11-24h2-a-quick-guide/

thxapproved2

Inspiring

I have Windows 10 still. All I get is scratchy 0dbfs bitstream noise with AVCHD files from a Sony camera.

Premiere 25.3.0.

What's the fix? I have a request in to me to edit some AVCHD footage... and I cannot. Still get audio natively in Windows if I open the file in Media Player. Why does Premiere no longer play? Yes, I even tried installing the codec packs just in case. ATTACHED is a file that demonstrates what the audio sounds like. (WARNING, it's loud)

AVCHDDolbyBitstream.zip

J

John242237733v3r

Participant

I have the same issue. Recording on a Sony PXW camcorder, editing on Premiere Pro 25.3.0. MTS files just have the scratchy static. Before it was just zero audio and now it's the noise.

sample_audio_glitch.zip

S

Sumeet Kumar Choubey

Community Manager

Hi thxapproved2 & John242237733v3r,

We're sorry about the poor experience. We're aware of this audio noise issue with MTS media in Pr v25.3 and are working on getting it fixed as soon as possible. For the time being, please use Premiere Pro v25.2 as a workaround. We will provide updates as the issue is addressed.

Thanks for your patience.

Sumeet

wxthings

Participating Frequently

Did installing the Dolby decoder completely fix the problem? I have the same issue on two different Win 11 computers. After installing the decoder, I do get audio on MTS clips, but the audio leads the video by about 20 frames. It may not be noticeable on nat sound clips, but it is painfully noticeable on spoken audio being out of synch. The visual clue to this in a sequence is no waveform appearing at the original end of each clip.