Choppy imported AVCHD footage - FCPx 10.4

If you click on the third button the display will show complete information for the file. The summary shows the frame rate as 119.880. Frame rates for video have to absolutely exact down to thousandths of a cycle per second.

In analog video the timing of NTSC video had to be exact for each of 525 lines in each frame every 29.97th of a second. So two-tenths of a frame discrepancy in one second is quite a bit. Generally this means each frame isn’t this rate but that the frame rates are slightly variable throughout the video.

Yes Tom, your are right.

But in this case we know until 2 month that it is an avchd-transcoding problem

that only can be fixed by apple. To tell us, that this a canon problem is not

a solution or to know what mac i am using - in this case.

Use the MediaInfo app from the App Store and see exactly what is says about all the media specs. Need to know exactly what the metadata reports on the file structure.

I have been one of the first ones realizing this issue and reporting it to Apple and to this community with Canon XA10 camera and having it checked. As said, it is not Canon, it’s Apple! I strongly believe the bug is on the FCPX 10.4., not on HS. I have managed to replicate the issue ALSO with Sierra AFTER upgrading FCPX to 10.4. Strangely though, the issue (choppiness) is not only in FCP but also in QT and iMovie. Before FCP 10.4. I had no problems whatsoever with none of the above mentioned programmes.

I really look forward to Apple’s fix!

Can you post some of this media somewhere? Maybe WeTransfer or Dropbox?

I've had issues with the C300 w/ Canon XF codec since the update. Posting on the support boards isn't going to reach Apple, you have to call support directly. I would encourage you do so.

I was told Apple no longer supports the C300, since only the Mark ii model is listed on their camera support page -

Cameras supported by Final Cut Pro X - Apple Support

I see the AF100P is listed but not the AF100, so while it may seem obvious to you that shouldn't be an issue prepare to get that response.

I was also told to post feedback here so that the dev team actually gets it -

Feedback - Final Cut Pro - Apple

I'm having this same issue! I'm using Canon XA10e, which is one of the supported cameras. The problem is not the camera but FCPx 10.4 which for some reason doesn't support AVCHD. I actually sent the camera to Canon and they run a number of different tests without being able to replicate the error (on PC). I have contacted Apple's senior advisor who forwarded the ticket to California to engineers. It's been now for more than two weeks and no reply yet from Apple. I believe they are working on this and I do hope it's going to be fixed in the following version.

Mostly likely because the handling of AVCHD was changed in AV Foundation and that's effecting the output from Canon AVCHD cameras more while it doesn't affect the media from other AVCHD cameras. It's not a change in the codec because that seems to be working across the OS and it's written in hardware on newer computer so that would be difficult to change. It's only some avc1 structures that seem to be effected and some in different ways. Some Canoin cameras seem to produce one effect and others different ones.

Perhaps, but why not in FCPX 10.3. or if you transcode to ProRes with Kyno before importing to FCPX 10.4.?

You might also transcode via Dropdown-Menu in Finder

Do not put too much faith in a list of supported cameras. There are just too many out there.

Did you take the card and used it directly on your mac?

Also, most of the AVCHD problems end up being caused by other software conflicts (like having Perian or A52 codec installed) and have nothing to do with specific camera models.

Project properties are in the inspector. Clip properties are most detailed in app like MediaInfo but the QT player information window is good. The hard drive specs for the drive should be on the device. Does the MBP have USB-C? I think that’s quicker than the ports on the MacPro if the drive is fast.

@Tom

Understood. But in this case it would no change anything.

(And on my macs i can see it in the timeline). It is in quicktime too.

only when transcoding via kyno to prores before importing

there are no problems.

it is a software problem since HS and the update to fcpx 10.4

i sent the information to apple month ago.

They have to do there homework.

thank you for your help.

I see the skip at 1:22. It doesn't seem the audio skips. Is this true? Only the video is skipping? Does the audio go out of sync?

It would be good to get the actual file. I have multiple AVCHD and DSLR H.264 files and none of them skip.