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texasjefe742
New Participant
February 7, 2017
Question

File merge & Audio sync issues in Pre. Elements with .mts-->.mp4

  • February 7, 2017
  • 1 reply
  • 2205 views

Hi,

I am having two issues with importing/converting .mts (AVCHD) files into .mp4 to edit with in A.P.E 15. This problem started in APE 14 which is why I bought 15.

1) If I import .mts files into APE, there does not appear to be a way to merge the files into one file. (I am not talking about grouping) files. The .mts files are properly audio synched, but they have sound gaps at the end of each file, that will fix when the clips are merged. Is it true that APE cannot merge .mts files, or, is there an APE solution for it?

2) Now, if I convert the AVCHD into an .mp4 file and load it into APE, even after conforming, the audio is not synced. I understand this is because the camera may have used variable frame rates, and the converter and editor cannot compensate for the inconsistent frame rates in clips, and thus the synch is lost. Is is true that APE cannot auto-fix these sync issues when conforming files?

I am testing external conversion program suggested by external web posters. These tools are Any Video Converter, Handbrake, and Filmora.

Filmora can merge the files and gets closer on the synch on a conversion of 1 AVCHD file to an .mp4, but it does not fix them.

Your suggestions and solutions are heartily welcomed, and I would love to find out these issues are fixable in APR. If they are not, please suggest outside tools that have worked.

[moved from Premiere Pro to Premiere Elements forum by mod]

This topic has been closed for replies.

1 reply

Ann Bens
Ann Bens
Adobe Expert
February 7, 2017

I am having a bit of trouble with your workflow.

Are these mts files one long take and chopped up in 20 minutes segments?

Or are these just random clips.

If so I would put them on the timeline and trim each clip 1 frame.

BTW Elements can make one mp4  file out of many clips

But what you are doing now is double encoding.

B
Bill Sprague
Adobe Expert
February 7, 2017

There is a history with some AVCHD cameras.  Using SD cards created a file size limit.  I think it was 4GB.  If I remember, it was about 20 minutes at the highest quality 1080p60 setting.  Both Panasonic and Sony cameras came with software that would join those sections together seamlessly without rendering losses.   Panasonic's was called HDWriter.  I forget what Sony called theirs.  For example, the software would transform the three parts of a continuous hour long recording on the SD card to one seamless file on the computer HDD.   It was lossless and fast.

Depending on a lot of things, if one used software other than what came with the camera to join the files, there could be a one or two frame glitch in the audio.   Somewhere the design of AVCHD has some secret sauce in it for the proprietary software to knit the 4GB chunks together.  

You may not be able to completely resolve this using only Premier Elements.

Ann Bens
Ann Bens
Adobe Expert
February 7, 2017

I might can if you copy entire card to hdd first and then Add Media.

this way Elements will probably use the metadata properly.

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