Audio & video are out of sync (help!)

Please help, all of a sudden, my video and audio in my timeline and browser are out of sync. In the timeline, some audio clips match w/ their video, some don't. What's up with that? I've been editing this timeline for weeks, I had no problem until TONIGHT. In the same timeline or sequence, some clips are out of sync w/ their audio. Could it be something to do with dropped frames? I have this window that comes up now (whereas it didn't before) and in red, it reads:
RT Extreme has determed dropped were caused by slow disks. Please try:
-increasing the speed of your disk (huh?)
-decreasing the number of RT layers
-Limiting your RT bandwidth in User Preference.
I'm totally perflexed. Please help.
thank you
kchen

dear Jimmy,
I burned a tested DVD and the audio is fine. I guess the way I view was a bit misleading.
Thanks for your time...but i have another question. When playing my video back from the timeline, I still get this message in RED:
RT Extreme has determed dropped were caused by slow disks. Please try:
-increasing the speed of your disk (huh?)
-decreasing the number of RT layers
-Limiting your RT bandwidth in User Preference.
MY video disk has 150GB left, out of 250gb
my hard drive that has fcp has 120GB out of 300GB
do you know why my timeline keeps stopping and gives me this warning?
thanks Jimmy

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Audio and Video are Out of Sync

Hello,
This seems to be a reoccurring problem for me and I'd love some help getting it resolved once and for all. After capturing footage, the audio and video are out of sync in the clip AND when I drag it to the timeline. When I go through each part, it looks like the video hesitates often, which seems to be causing the misalignment of audio. But, once it is moved into alignment, it goes out of sync again throughout the remainder of the one hour video.
I'm capturing through a Canon Optura 50 Mini DV and editing with FCP 6.0.1. I have checked that the audio mode is set to 16 bit on the camera, and the capture settings have the audio rate for 48 KHz.
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I am still wondering why you're recommending that I use an external drive for this project.
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I always used external drives, but we had many problems with delays and processing problems.
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terriCCC
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http://www.atr935.blogspot.com/2013/09/pe-dvd-videoseamless-vob-ripping.html
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Yea it still won't let me post images, so here are the settings:
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I lined up the beginning - perfect sync. However, several minutes into the clip, the audio and video start falling out of sync - more and more as it moves down the timeline.
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Make sure the sequence settings match the media. If that's not the problem, it sometimes works to modify the speed of either the audio or video if you can figure out by what percentage they're out of sync.

Audio and video are out of sync in I Movie.

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With your big 2 hour clip in MPEG Streamclip, move the cursor to the start of the 5 minutes that "matters" and press i. Then move the cursor to the end of this 5 minute section, and press o.
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Upon export, audio and video are out of sync.

While editing, my cuts are lined up with beats in the music, but after export they shift approximately 5 frames, making my cuts appear later.
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Please UN-check the "Frame Blending" box, that is only used when changing frame rates. The source and export are both 23.976, so that can only cause issues (blurring between frames with motion). Also uncheck "Max Render Quality", that is used for SCALING, such as 1080 to 720, or HD to SD. Your source and destination are both 1080p.
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Hey adobe tech heads
So, I recently upgraded to the new Adobe Premiere Pro CC, from Premiere Pro and I have to say that there doesnt seem to be any difference to the normal functionalites. While I am merely a beginner, i suppose there are more complex features that i have yet to discover.
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So here is my problem - Once i edit and export the file into the youtube 1080 25fps HD option, I open this new exported file on my pc and it works fine, perfectly synced and ready to share. Once i have uploaded it to Vimeo, which is my preferred social media network, it uploads fine, and on any normal pc/laptop, there is no problem and it runs just as smoothly as when it was edited. Although i noticed that the video seems to be playing at about half a second behind the audio when trying to show someone on any iPad/tablet or any mobile phone. I recently made this clip as a tester and to be able to show you awesome braniacs, because its kinda pissing me right off, that the video isnt perfectly syncing into the audio on the phones and tablets, but works just fine on a PC/Mac. I specifically made a point to match the images up to the beats of the songs, and if you watch where the little kid climbs up the indoor rockclimbing wall, this might help you understand my frustration. check the below link on your pc/mac, and then again on your phone and you will see what i mean. I even played them simutaneously together and you can see the delayed video on the phone/tablet than on the PC/Mac.
Any help would be greatly appreciated on how to fix this, as while its doing my head in, i am sure for you guys, a simply change on my lack of tech knowlege, will probably have us all smiling! Here is the clip - https://vimeo.com/7105289
Thank guys. I look forward to your replies

First of all, when you export, you should see the dialog box that has information about the source video as well as the export. If you are shooting 25fps then you are not in the USA. If you are in the USA, look harder at your export settings.
But that isn't the problem you are facing.
Are you using the Vimeo app to play the videos on the iPad or are you just playing it in a browser? Use the app if you aren't now doing so.
I doubt that you are using anything other than AAC for your audio from what you have said about using the presets, but I have to ask. You are using AAC, right? That is what Vimeo prefers.
Have you tried turning the HD off in Vimeo to see if that clears up the problem? That will probably be fine on a smartphone. An iPad might see the difference though.
You are not going to be happy reading this Vimeo.com thread, but here it is anyway.
I don't even know what to make of this one.
In any case, you will read for yourself that you may want to change browsers on the mobile device.

Non-controllable device/ audio video still out of sync?

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"i was told that by setting "non-controllable device" that fc would ignore time code and import without sync problems. is this possible ?"
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I just noticed in my software update that FCP needed to be updated. So I updated the program.
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I am still wondering why you're recommending that I use an external drive for this project.
Because the internal has more than enough to do running Mac OS X and the applications. It is constantly writing files. While DV video is at the lower end of the scale, it is still asking a lot of the drive's read and write head.
I always used external drives, but we had many problems with delays and processing problems.
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Audio & video are out of sync (help!)

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