AVCHD Import = Jerky Motion

Advertisement

OK this is doing my head in, not least because it should be one of the most common and therefore simplest / most reliable workflows Apple should have ensured would work with iMovie.
I have some m2ts files from a Panasonic HD camera. They are 1080i as that's all the camera will do, with an AC3 soundtrack.
To get these into a format that iMovie can import, I'm remuxing with ffmpeg, copying the video untouched and converting the audio to alac so there's no loss of quality. The resulting files play perfectly in both VLC and crucially in Quicktime.
However when I import into iMovie and they are converted to AIC the motion becomes jerky. Single-stepping frames you can see that iMovie has duplicated frames every half second or so which makes the resulting clip completely unusable.
To see if the issue was caused by incorrect video/audio sync from the ffmpeg remux I tried a version with no audio at all ie just AVCHD video copied across, and the result is exactly the same. iMovie is destroying the video on import.
So as it stands, iMovie is of no use to me and I have no way to edit movies on the Mac.
Surely loads of people must have imported AVCHD into iMovie without this issue, so can someone tell me where I'm going wrong please, or is this really a serious bug in iMovie? I'm on the latest version BTW - (9.0.8 - 1778).

Advertisement

Agree with your assessment of the issue Brad and no I haven't tried to convert to AIC but I agree that's the logical next step. Issue is the best way to do so, so that iMovie will not try and optimise further and thereby recompress a second time when rendering the movie. I notice from your original pitch about BlueXFree that I should be able to use that although I didn't see that option when I tried it.
Maybe I'll be a bit more patient with your program and see if I can get it to do the conversion
Will post back how that goes......
----- edit ------
Yep - perfect thanks! Using BlueXFree to convert to AIC first, then doing a non-optimised import into iMovie results in a perfectly working clip. It's a bit of a pain in terms of workflow, but this is only for my existing stuff as iMovie imports correctly from the camera directly so in future I'll use camera archives rather than the camera's own software which is what created these m2ts files in the first place.
Great catch Brad - much appreciated.

November 30, -0001

AVCHD Import = Jerky Motion

OK this is doing my head in, not least because it should be one of the most common and therefore simplest / most reliable workflows Apple should have ensured would work with iMovie. I have some m2ts files from a Panasonic HD camera. They are 1080i as

Import fl.motion

I'm trying to get this code working from the help file. import fl.motion.MotionEvent; abox_animator.addEventListener(MotionEvent.MOTION_END,afterMotion); function afterMotion(e:MotionEvent) {     trace("animation complete!");  } I've tried using

Jerky Motion on TV

Hi I'm shooting HDV on a Canon HV20. Exporting finished sequence as QuickTime movie using AIC works fine - plays perfectly full-screen on this Mac. Burning to DVD using iDVD for widescreen PAL playback produces very jerky motion and panning. Any idea

Panasonic HMC70P AVCHD import problem

I searched through the forum and found loads of problems importing AVCHD into FCE which is rather disconcerting. I have a brand new Panasonic HMC70P AVCHD. I tried to import using Log and Transfer. All the scenes on the SDHC card appeared nicely on t

FCE and AVCHD import now stutters in playback/editing

I just converted to Canon M40 HD cameras, and started editing my first wedding using these cameras.  If I have two or more tracks of video, and play them back, the video stutters like the computer can't keep up with the data traffic. I am using FCE 4

AVCHD-Import without 5.1 surround sound

I doen't get 5.1 surround sound, when I import AVCHD clips from my Sony Camcorder HDR-CX550E in FCP X. After the import in FCP X it's just stereo. I know for sure, that the recorded clip on camera is 5.1 surround sound, because I can play it via HDMI

May have solved AVCHD import in Lightroom?

Okay. This is wierd as hell, and I can not explain why it is working but it does. I have been struggling with the whole Lr not importing AVCHD footage from my Nikon D7000, and I went to several extremes and re-encoded a bunch of footage into mp4 H.26

AVCHD imports at 60 fps instead of 30

I'm having a strange problem when importing AVCHD video from my Lumix DMC-TS1. It was recorded with 30 fps, but both FCE and iMovie change it to 60fps when importing. This results in video that's twice as fast, even though the audio sounds normal. Th

Flicker and pixelized video after importing from motion

Hello, I captured a clip from HDV tape via Firewire using log and capture in FCP, then exported the clip to Motion where I applied filiters. I made a movie from Motion and imported it back in FCP. The movie required rendering to play and it now has a

AVCHD import issue

I am using a sony hdr sr10 and recording in the best avchd file possible, when i try to import with the log and transfer feature and click add to queue, the file says is uploading/converting, but then it says its idling, and it says that there is an

AVCHD importing issues - out of synch

Hello and thanks for reading. I am new to FinalCut Pro and to working with the AVCHD format. I am having problems converting AVCHDs shot with my Panasonic AG-HMC150P into .mov files that work. A little history: when I started my current project, I be

Best text file to import for Motion Scroll?

Hi, I will be getting a copy of the credits to add to the end of a play. What format should I ask for the text to be in? What works best in Motion 4? (RTF, PDF, etc) Thanks.Watch this tutorial from Mark Spencer. It'll answer all your questions. [MacB

AVCHD import question

Some great people explained the options to bring AVCHD into FCP 6.0.4 (both converting it to ProRes and using Toast to convert it into DVCProHD). My questions are: is there a quality issue between the two? Is there an advantage to using the Toast con

Jerky motion in iMovie '08

Hi, Am making a short movie which consists mostly of photos but with some short videos intercut. I am also synching to a pre-recorded track. The whole movie plays perfectly until later in, about 2 minutes in, but then some photos play with a short je

AVCHD import is HUGE!

I have a Sony HDR-SR11 HD camcorder that I use for taking home movies. It has a 60 GB drive that holds 7 hours of full 1080i video. Recently, I tried to import a few videos that took less than 1/8th of the total hard drive space on the camera. But wh

Importing full motion video in slidelet

Alright recorded some slides and I am trying to incorporate them in to a slidelet but they have full motion recordings in them. When I publish to SWF it makes two separate SWF files. The full motion portion is in the middle of my project. Is there an

Jerky Motion and Slowness

Intersting--I find that on many Aps and even on Mission Control, Lion doesn't seem to run smoothly.  Anyone else experiencing this?Yes, I am having a similar problem with Lion.  Scrolling does not work well. I have loaded it only on my macbook Air, w

Motion files no longer able to import into Final Cut

Hello all, Everytime I try to import a motion file into Final Cut I get an unrecogized file error. This just started but I also noticed that Motion has limited export options as well. I am wondering if anyone else is experiencing this problem.Hi ther

Unable to import Motion files to FCP!

Just realized that I can´t import any Motion files to Final Cut Pro 5, could yesterday. Very anoying, what could have caused this? /CUBWhich versions numbers, and what sequence settings are you using for each program? And you've trashed the plists fo

Importing transparent logo from photoshop into Motion 1.01..

I am trying to import a transparent logo into motion that I did in photoshop.. No matter how I save it in photoshop, when I import in motion it always comes up with white background and never just the logo.. I have tried clicking on the Alpha type in