No audio imports with FS700 .mts files

I'm grateful that Resolve now imports FS700 .mts files finaly but it seems it can't import the audio associated with those files. I've checked the files in other apps and its definitely there. Is there something that I'm overlooking on import or inside R12. These are audio clips shot at 23.976 not high speed clips. All the clips show 0 audio tracks in the media browser? Anyone else have the same issues?

[Dwaine Maggart]

Can you link to a sample clip we could examine?

I can confirm this issue.

No audio with Sony mts files. Video seems to be OK.

Resolve 12.0.0.048 on Windows 7.

Dwaine - If you didn't get a test mts file, let me know and I'll send one.

Josh Hammer

There's at least two long threads on the absence of audio in .mts files.

Dwaine, surely the .mts issue can't be news?

Peter, Josh: try recording with the PCM option, if you can. AC-3 is no go, so far.

There is an .MTS thread with plenty of recommended workarounds to the MTS problem.

[Dwaine Maggart]

Various files seem to do various things on various OS platforms.

If you can provide a sample file, I can test in various scenarios and let you know what works and what doesn't.

If you happen to have a file that doesn't work in your scenario, then the .MTS thread mentioned by John and Aaron has suggested work arounds.

viewtopic.php?f=21&t=37632&p=228562&hilit=mts#p228562

Hi, I have similar issue with footages shot with Sony A99 in Resolve. Video plays fine but no audio.
Here is a 3 sec sample clip https://dl.dropboxusercontent.com/u/13789536/00002.MTS

[Dwaine Maggart]

Jason, that file shows no audio channels in Resolve 12 on Windows or Mac.

Hi Dwaine, I am on Windows 8.1 using Resolve 12.

Here is the media info on that dropbox .MTS file that shows an audio track. Also the file plays back normally with audio in Win10 Media player.

Format : BDAV
Format/Info : Blu-ray Video
File size : 11.8 MiB
Duration : 3s 959ms
Overall bit rate mode : Variable
Overall bit rate : 24.9 Mbps
Maximum Overall bit rate : 28.0 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Format settings, GOP : M=1, N=15
Codec ID : 27
Duration : 4s 4ms
Bit rate mode : Variable
Bit rate : 23.7 Mbps
Maximum bit rate : 26.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.190
Stream size : 11.3 MiB (96%)

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 129
Duration : 4s 32ms
Bit rate mode : Constant
Bit rate : 256 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 126 KiB (1%)

Text
ID : 4608 (0x1200)
Menu ID : 1 (0x1)
Format : PGS
Codec ID : 144
Duration : 3s 438ms

Try getting a copy of FFMPEG and converting your .MTS with following command:

ffmpeg -i "input-mts-filename".mts -vcodec copy -acodec pcm_s16le -ar 48000 -ac 2 "output-filename".avi or .mov

or for ProRes file format:
ffmpeg -i "input-filename".mts -vcodec prores -acodec pcm_s16le -ar 48000 -ac 2 "output-Filename".mov

Add -profile 0,1,2 or 3 after Prores command to get draft,...,Normal or HQ



This will re-wrap the video and convert the audio to PCM (uncompressed audio) which will playback in Resolve.

[Dwaine Maggart]

Correct. The issue is the AC3 audio. Resolve does not decode AC3 audio.

My FS700 files work when I turn the Dolby noise reduction off in the camera audio record settings.

When I started using resolve a few months ago, it would import and play back MTS files from my Sony A7 just fine, but now it does not. The video still plays absolutely fine, but it can;t seem to find any audio in the files.
Does anyone have any idea why this may be?

[Dwaine Maggart]

You've updated Windows 10 to build 1803?

Try getting a copy of FFMPEG and converting your .MTS with following command:

ffmpeg -i "input-mts-filename".mts -vcodec copy -acodec pcm_s16le -ar 48000 -ac 2 "output-filename".avi or .mov

or for ProRes file format:
ffmpeg -i "input-filename".mts -vcodec prores -acodec pcm_s16le -ar 48000 -ac 2 "output-Filename".mov

Add -profile 0,1,2 or 3 after Prores command to get draft,...,Normal or HQ

I know that this is an ancient thread, but I feel compelled to respond to Aaron Star's 2015 post, and thank him for saving the last vestiges of hair on my head!

I am finally getting around to trying my hand at video editing. I have made quite a few videos with my Panasonic HDC-TM200 video camera (vintage 2008, I think), but I've always just used them as they were shot. But this time I needed to edit.

Anyway, I don't want to make this too long, but the point is that I shot the video in AVCHD and the resulting .MTS file(s) wouldn't present their audio from within DaVinci Resolve. I used your ffmpeg guidance and successfully converted the 5 files I need to work with, and now I have audio!

Going forward, I'll pay more attention to the settings on the Panasonic to make sure that I can properly edit the results without this conversion step.

Thanks, again!

Cheers,

- s.west