There is a bug with AVCHD imports. When importing long clips, like a 1 hour video. The import process never ends.

With AVCHD, there is a limit of 3.99 GB per file (FAT32 limit). So, longer video clips will be composed of several .mts files of 3.99 GB maximum.

But MC doesn't like this and will not complete the import.

What I request is that MC5 imports the clips properly and automaticaly merge them into a single clip.

But until it is resolved, I need to use MTSMerger to merge all the clips (from the same continuous clip) together.

As previously stated in another thread. I made a new test in MC5.0.1 and a the import bug is solved.

I am now able to import a long 1 hour continuous clip composed of 3 X 3.99 GB file.

The import process can now complete correctly,

But there is a new bug. There is a 2 frame glitch between each 3.99 GB potions of the large clip.

Here is an example.

The way Avid would solve this issue would be to merge togetter all the chunks of the clip into one clip.

I'm using a Canon Vixia HF200 camcorder to record some long training sessions. I have a 32GB SD card installed on the camcorder so I can record continuously for up to 5 hours in SP+ mode.

When I finish the recordings and import the video files from the SD card into my video editing software, the continuous video is broken up into a series of consecutive MTS files, all with a file size limitation of 2 GB.

This issue is now completely solved. MC can now merge several 3.99 GB chunks into one continuous clip.

how?

Adam_S:

how?

I tested it. If you go in the folder containing the .mts files, you just have to select all the files and MC will merge them when needed.

i.e.: If I have the clips 0001 to 0008 and my files 0004 to 0007 are a continuous clip. MC will import the files correctly and in my bin, I will see 0001, 0002, 0003, 0004, 0008.

The file 0004 will be a long merged video and it will indicate spanned during the import process when going to the next clip to import.

Hello,

for me Istill have the issue.

I want to import a 2h15 shooting composed of 9 MTS files captured from a Sony HDR-XR500 AVCHD camcorder (each file is 2 Gb), but when I import them (I selected the 9 files, I only selected the first file) with any method of file selection the import process loops on the 2nd file, and I don't have any other solution to cancel the import process.

When "importing" the 2nd file it says it is a spanned AVCHD file.

With MC 5.0.3 (no patch) it was be possible to import each MTS file indivdually, but with a desynchronisation between audio and video. Now MC detects the shooting is spanned on different files but cannot anymore import them....

I did that with 5.0.3.5. I see that you have 5.0.3.7r on a Mac with a different camera and file sizes. Many different factors. I'll have to try with 5.0.3.7r eventually.

the camera we're using (MC1s I think) don't flag as spanned, I think because it doesn't record timecode (I freaking hate when camera people want to use their own inferior equipment in order to make money renting their equipment to production at a cut rate). 

I had the same thing happen to me today. Here was my solution. I downloaded Handbrake, a great little piece of software that also digitizes DVDs.  I imported the long clip and converted it into an MP4. It loaded in nice and clean. A bit of a pain but at least you don't lose any information. 

Otherwise the rest of my clips came in clean and locked together pretty well. I know when I'm shootnig a speech or long interview to get plenty of crowd shots and cutaways to cover the littlel digital misinformation when two clips are connected. 

I'm on MC 8.2/HP Z-400 PC

EAFutter - the last post on this thread came from a time when things were much more murky when using AMA.

NOW, AVCHD work is much easier with AMA.  No third-party tools required, so that eliminates a conversion step.  You can do it all within MC, without losing metadata like timecode from the original AMA source.

Just AMA Link to the folder that contains your raw AVCHD media.  For example, let's say I copy the entire contents of my card and put it on my hard drive, so it looks like this:

20150206-City_BROLL-CAM1-AVCHD-01 > PRIVATE > AVCHD

I link to the 20150206-City_BROLL-CAM1-AVCHD-01 folder, and ALL of the clips from that folder appear in the bin, properly spanned if their individual files hit the 4 GB limit.

You can then transcode to the codec of your choice, or begin editing, and then transcode your sequence.

OR, begin editing while you do a background transcode, and then relink your sequence to the transcoded media when it's done.  Many different ways to slice it, depending on your workflow.