Corrupt Video On External Drive

Hi
When importing video from my Cam Corder to the main drive on my iMac the video imports perfectly every time. But when I import to my external drive there is sometimes fractions of the clips that look corrupted. Its just for maybe half a second of blocky video then it goes back to normal. I've imported the same footage a few times now with different results. The corrupted parts are different each time and its only for less than a second.
To be hones the external drive is 500 GB in an Xcraft case and is quite old. I'm using to see if my machine is fast enough and see if its worth buying a new drive.
Could this be bad sectors on my drive? Or just the machine failing to import correctly due to transfer speeds of external drives? Could I maybe import to the main drive and then copy over would this help?
Is there an app to check for bad sectors? I've Used Disk Utility bit al it says is the disk is fine but the check only took a few seconds so that obviously did not check all the sectors.
Any help appreciated.

Modern camcorders generate a new file for each clip you shoot. You can load the clips into iMovie either directly from the camera, from the SDHC card or from a copy of the SDHC card on a hard disk.
Which OS version and iMovie version do you have?
There are some constraints on the video formats that can be imported that depend on this.
Geoff.

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Importing video, purchasing external drive

I have shot some video on DV Cam format. I need to send it all to a friend who will edit it on his FCP system. Here's my plan: digitize the video through iMovie at the highest quality through a firewire, saving it to an external drive and send him the drive when I am done. (It's six hours worth of footage.) I want to keep the original tape safe with me.
Here's my question: when I go to buy an external drive for this purpose, does it have to have a certain speed requirement? I'm clear on how big it needs to be, but do I need to be careful on some other technical requirements?
Thank you.

{quote:title=Karsten Schlüter wrote:}
usb is on a Mac a 'CPU related task' .. firewire is 'independently' working on Macs.. so, usb2 is on some BeigeBoxes faster, but not on Macs.. plus, USB is a package protocol, fw is a stream.. if you measure just the data-transfer, again usb2 is faster; if you measure the total time, incl. 'verifying', fw is faster..
If I may nit pick a little bit. I believe how USB and Firewire work are not just a Mac thing but how it works in general for all platforms. Also Firewire can do either method, but for video importing from a Camcorder or the other way, it is streaming and doing so directly to a USB2 external drive will not be able to keep up and many frames will be lost.
Once off the camcorder and in the drive, then I don't think it really matter which type you use, USB2 or Firewire. But if you want to export back out to a digitial camcorder from the external hard drive, then it needs to be Firewire again.
Patrick

Opied files got corrupted in USB3 external drives connected to Macbook Pro, how to fix it?

I use USB3 connected external hard drives in my Macbook Pro mid 2012 (Yosemite 10.10.1) frequently. I had no problem until two months ago. This week I noticed a lot of corrupted files in one ext drive connected to USB3 port. Luckily I have a backup, and I copied back the files. But the files copied recently were also corrupted even though source files are fine. I spent a whole day trying to fix it using different methods of copy and options, e.g. erasing the drive, using cp, rsync, ditto and a combination of their options. I figured out that if I use cp or cp - R for copying single file or folder, it works fine, but using of rsync, ditto or recursive cp or finder's drag and drop result into a lot of corrupted files in the target drive. This is not the problem of external drive. I was surprised to notice that all files are copied perfectly when I used a old macbook (2008 model, it only has USB2 port, and OSX Mavericks). Since I have almost 2TB data to write, USB2 is very slow. I want to use USB3 of Macbook Pro 2012, but I am very disappointed to find out that USB3 in Yosemite is causing the trouble, writing out corrupted files. If anyone has a solution to this problem, or a second thought, Please suggest.
External hard drive Western Digital My passport.
Disk is formatted to Paragon NTFS

My guess here is there is some issue with the use of Paragon NTFS. Perhaps updating it or using another NTFS driver (like Tuxera, or its free alternative NTFS-3G) will work. All in all, using NTFS in write mode with these options will be using a non-supported approach for accessing your drive, which could lead to odd problems if Apple makes a change that interferes with the functions of these drivers. At other times, such drivers use inherently less stable approaches (such as the FUSE environment) that could lead to problems if not formatted correctly.
If your drive is working, and the formatting is checked out properly in Windows and other systems, then I'd suggest you check on your NTFS driver and update or replace it. Alternatively, if you only use the drive with your Mac, then consider formatting it to Apple's native Mac OS Extended. Lastly, if you use the drive with multiple operating systems, then consider using FAT32 or ExFAT as the format, as these are fully supported in OS X (unlike NTFS, which is only supported for reading).

Copied files got corrupted in USB3 external drives connected to Macbook Pro, how to fix it?

I use USB3 connected external hard drives in my Macbook Pro (Yosemite 10.10.1) frequently. I had no problem until two months ago. This week I noticed a lot of corrupted files in one drive. Luckily I have a backup, and I copied the files. But the files copied recently were mostly corrupted even though source files are fine. I spent a whole day trying with different options, e.g. erasing the drive, using cp, rsync, ditto etc. I figured out that if I copy single file or folder using cp, the copied files are fine, but rsync, ditto or recursive cp or finder's drag and drop results into a lot of corrupted files. I thought this was the hardware related issue of the external drive. But, I was surprised to notice that all files copied without any problem when I used a old macbook (only has USB2 port, and still use Mavericks). Since I have almost 2TB data to write, USB2 is very slow. I am very disappointed to find out that USB3 in Yosemite has caused all these troubles. If anyone has a solution to this problem, Please suggest.
External hard drive Western Digital My passport.
Disk is formatted to Paragon NTFS

It's good to hear the Macbook Pro & the disk is capable of working correctly. The next test would be to try a clean install of OS X & repeat the copy guess. Adding third party drivers for write support makes the picture a little cloudy IMO.
I'm not really sure what else to suggest other than doing some tests & then taking that data to an Apple store. If you are lucky the genius may follow up on it, or if you submit it as bug reports Apple may follow up on it.
http://apple.com/feedback/
Good luck with it, if you want some other ideas post back

Importing video to external drive

I'm new to mac's. Bought for video editing. Problem have bought an external Western Digital My Book that I exported my first video to. Done some editing and able to share direct from imovie HD 6 to iDVD ok. But when I just open iDVD to burn the same movie & select the WD My Book Ext HD the movie is greyed out. The WD HD has been reformatted to OS X format. Should I use the internal HD to work on the movie then just use the external to store the finished project. I bought the external to hopefully make the system work faster when editing rather than have the internal over worked with the operating system as well. This is how I used to edit on my Windows XP before. thanks for any help offered.
iMac 20" screen Mac OS X (10.4.8)

Welcome to iMovie Discussions.
What you're doing ought to work OK, because you seem
to have reformatted the WD My Book to Mac OS
Extended.
But have you incorrectly connected it via USB instead
of the required FireWire connection?
If connected correctly via FireWire, you should be
able to import directly to the external drive, edit
on that external drive, use the external drive as the
source for creating your burnable iDVD - though
you'll need lots of space (..up to 4.7GB..) on your
internal drive for creating the "disk image"
which iDVD will burn onto the actual DVD.
That's how I do it, and it works for me..
<Thinks..>
When you say you've "exported" your movie to your My
Book drive, iDVD wouldn't be able to directly burn
that "exported" movie: iDVD burns from within an
iMovie project because it reads the "project file",
which tells it which bits of which clips to change to
MPEG-2 format in order to create a DVD.
You can also use "Disk Utility" - in
Applications>Utilities - to burn a copy of anything
at all onto a DVD, but that won't necessarily burn it
in DVD video format ..i.e; you accidentally
might simply burn a data copy of your movie onto a
DVD, and that wouldn't be in the right format to play
on a standalone DVD player.
..What I mean is: make sure that iDVD has access to
your edited movie, and not to an
exported copy of your movie which has been
stored on your external drive.
(..Now I'll go and have a little lie down..)
Thank for the help. I have conected via Firewire so thats not a problem. but will check what format OS X i formated to, if I remember there was several format options? will double check this first.
Thanks
iMac 20" screen Mac OS X (10.4.8)

Firewire incompatibility w Video and external drive

I recently purchased an iMac G5 for video editing and wanted to use my external drive mainly to store my iMovie projects. Obviously the video camera and the external drive are disturbing each other that much, that the external drive stops working when I am capturing video on the internal drive. Capturing directly on the external drive did not work anyway; daisy-chaining camera and drive neither.
Following configuration: iMac G5 2 GHZ, 20 " screen, 2GB RAM, OS 10.4.1, LaCie 250GB external drive with FW 800 and 400 (done firmware upgrade on this drive); Canon MV 750i.
Any help would be really appreciated!

The external drive is formatted MacOS extended.
Of course I don't have to transfer large files simultaneously, but it would be nice not to have to capture everything to the internal drive first and then transfer it to the external drive.
Moreover, there are situations where it is not easy to disconnect the external drive each time the cam is connected and turned on. For example, I am working on an iMovie project located on the external hard drive, find a clip archived in FootTrack that I want to add. To import this clip I have to capture it from the camera. Now I have to close the project, disconnect the external drive, capture the clip (assuming the FootTrack archive is on the external drive I have to close FootTrack and can't control if I am really importing the right clip), disconnect the camera, reconnect the external disk transfer it and import it into iMovie...... done!
Better than nothing, but not exactly how one imagines to work.

Exporting video to external drive un-edited for storage ?

I would like to import digital media off my old dvd tapes and put them on a external hard drive allowing movie withdrawals for events as they arise. 18 or 21st or for a laugh at a parties or whatever ! I don't wan't to loose the memories or the ability to edit. Is this achievable. I would like to channel my video imports straight onto an external drive allowing the whole family access and opportunity to be creative. My computer is loaded with my businesses support info and dumping my business info isn't an option, I don't want to waste time refining so to create space when I have so much storage available externally. The need to back up these files is increasingly important as connections to the old DVD camera are changing all the time and purchasing more adaptors is a bit of a pain. I may be missing something so obvious but I have explored iMovie and haven't seen the options for exporting or channeling the footage. It seems to me that this will be a requirement for a lot of people. So my question is does this facility exist or is there an option, or a way to do what I want. Thanks to any one who can help...

You should be able to drag them from the iTunes widow to an ext HD and copy them over directly. Another alternative is to create a PL and burn a data CD/DVD from within iTunes.
Once you have the video on another HD you could create another iTunes library for just your video.
MJ

Getting old PC-produced videos onto external drive - a longshot

Hi all,
I have a particular problem and can't get very far on my own.
I have 11-12 years of "home movies" stored on DVDs. I still have the original DV tapes of many of them, but many more of the original electrons are long gone. That's OK. I don't mind.
What I want to do is get the content of those DVDs onto an external drive (probably as mp4's) so that I can convert them into the next-generation technology when there is a next-generation technology.
The problem is that the earliest of these 50 DVD were made on a Sony VAIO laptop with Sony software called Click-to-DVD. I don't really know how to use handbrake, and I don't really know what to do. And it looks like all my Macs don't want to read the files created by the Sony laptop and software (which are now long gone).
Does anyone have any suggestions? Should I just pay some 14-year-old to figure this out??
Thank you for any and all suggestions that an only moderately-computer-literate person can understand. Thanks!

Good!
You need to convert the VOB files in the TS-Folder of the DVD back to DV which iMovie is designed to handle. For that you need mpegStreamclip:
http://www.squared5.com/svideo/mpeg-streamclip-mac.html
which is free, but you must also have the Apple mpeg2 plugin :
http://www.apple.com/quicktime/mpeg2/
(unless you are running Lion in which case see below))
which is a mere $20.
Another possibility is to use DVDxDV:
http://www.dvdxdv.com/NewFolderLookSite/Products/DVDxDV.overview.htm
which costs $25.
For the benefit of others who may read this thread:
Obviously the foregoing only applies to DVDs you have made yourself, or other home-made DVDs that have been given to you. It will NOT work on copy-protected commercial DVDs, which in any case would be illegal.
And from the TOU of these forums:
Keep within the Law
No material may be submitted that is intended to promote or commit an illegal act.
Do not submit software or descriptions of processes that break or otherwise ‘work around’ digital rights management software or hardware. This includes conversations about ‘ripping’ DVDs or working around FairPlay software used on the iTunes Store.
If you are running Lion:
From the MPEG Streamclip homepage
The installer of the MPEG-2 Playback Component may refuse to install the component in Lion. Apple states the component is unnecessary in Lion, however MPEG Streamclip still needs it.
To install the component in Lion, please download MPEG Streamclip 1.9.3b7 beta above; inside the disk image you will find the Utility MPEG2 Component Lion: use it to install the MPEG-2 Playback Component in Lion. The original installer's disk image (QuickTimeMPEG2.dmg) is required.
The current versions of MPEG Streamclip cannot take advantage of the built-in MPEG-2 functionality of Lion. For MPEG-2 files you still need to install the QuickTime MPEG-2 Playback Component, which is not preinstalled in Lion. You don't have to install QuickTime 7.

Lightroom 3 corrupting images on external drive.

I'm using Lightroom 3 with the catalog on my macbook and original files on seagate firewire goflex external hardrive,
( has happened with 2 different firewire seagate hardrives) Lightroom has been corrupting some images (edits and some originals) randomly, which are then un-retrievable apart from my personal back ups.

It's quite understandable that you might suspect Lightroom in those circumstances. However, there are very many threads in this and other forums which start off with the words "Lightroom is corrupting my images", yet in virtaully every case this turns out not to be the case and the culprit is usually a hardware problem somewhere in the pipeline from camera through to computer.....and the challenge is trying to nail it. Remember that Lightroom doesn't usually write to your image files.
I suggest we start by filling in some of the blanks, such as trype of file we are dealing with, e.g. Raw, DNG, Jpeg? What form does this corruption take, can you post a screenshot showing it? Have you tried opening one of the "corrupted" files in PS or PSE (if you have it installed), if so with what result? And can you upload one of the originals which appear corrupted in Lightroom to a file-sharing site such as Dropbox or yousendit so that we can download and try to load into Lightroom to check?

Running out of disk space - External Drive Advice

Hi,
I've been importing all of our HDV video in "Large" fomat (Not the original or full size). We have an Apple TV so wanted to get the qaulity up for our large TV.
Anyway, we have lots of digital pics, huge iTunes library and now I'm starting to run out of disk space with all of my iMovie imports.
I would like to buy a huge external drive to help offload:
Is there any reason I should be concerned about storing my video on external drive? Any editing performance issues?
I use time machine, if I buy a huge external, can I split it in half and use part for time machine and part for imovie?
Just curious.
Thx,
Brent

I agree that you can make this work. Your external drive must be formatted as Mac OS Extended (journaled). You can do this as you are creating your 2 partitions in Disk Utility, if it has a different formatting when you buy it.
If you want to move your Events from your internal drive to your new external drive, you need to do it from within iMovie so you do not break the links to your projects. To do this, open iMovie and click VIEW/EVENTS BY VOLUME. You should be able to see a small icon in your Event Library List for your external drive. You can Command-Drag your event icons in the event library list to this icon for your external, and all the links to your projects will be preserved. (hold down the command key while dragging). If you do a simple drag and drop, it will copy not move.

External drives... whats the best for video.... ?

Hi everyone,
I'm trying to figure out what the best bang for the buck is in regards to external drives, and what works best for video.
I have considered the LaCie enclosures, I have also considered buying a 500 GB SATA to replace the 200 GB second drive I have inside the G5. The issue than is what enclosure works the best with a MAC and is 1394 and will the firm ware support huge video files, for render or exporting?
Can anyone give some advice based on what they have learned through past experience.
Thanks

I've been using LaCie FW (800 & 400) drives for about three years now with only one problem - One of the first drives I bought (I think it was a 120 GB) fried itself a few months ago. I currently have 80GB, 120 GB, 400GB and 500 GB drives, all working fine, never have dropped frames. The LaCie drives are pretty tough too, as I've sent most of them back and forth across the country at least a few times with no problems.
However, be careful if you update the firmware for them - make sure the drive is clean as the firmware update can cause corruption of data on the drive (I found that out the hard way!). Also keep in mind that they do put off a fair amount of heat (especially the big ones) so I wouldn't consider stacking them on top of each other horizontally.

I have the G Drive 1 TB (GEN4 1TB) external drive purchased in 2010. I need to connect to my new MacBook Pro. I'm using the external drive for media storage of my video editing projects. Will a 800fw to thunderbolt adapter cable work?

I have the G Drive 1 TB (GEN4 1TB) external drive purchased in 2010. I need to connect to my new MacBook Pro. I'm using the external drive for media storage of my video editing projects. Will a 800fw to thunderbolt adapter cable work? I understand that using a USB port connection is not fast enough for video editing. I read somewhere the G Drives don't connect well to MacBook Pro.
thanks
larry

I doubt this can be relocated or moved so you might want to just repost in the macbook pro area.
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
Can you afford a new Thunderbolt case and cable? any case with FW800 is going to be slow 72MB/sec and less, and any new 1TB drive is capable of 75MB/s minimum up to 125MB/sec.
Thunderbolt storage can of course when setup properly reach 100's of MB higher using multiple drives.
Use what you have for a system backup or for secondary backup storage.
you might be able to take the drive - most cases allow you to open and swap drives - and use this:
G-Technology 1TB G-DRIVE mini High-Speed Portable Hard Drive
or this:
http://store.apple.com/us/product/HB137VC/A/g-technology-4tb-g-raid-professional -high-performance-dual-drive-hard-drive?fnode=5f

I am having trouble keeping the quality of my video when exporting to my external drive. I change the kind to "original" but when I view the video from the external drive once exported, the sound and picture are distorted.

I am having trouble keeping the quality of my video when exporting to my external hard drive. I have tried to export from iphoto with changing kind to "original" but when I open the video from the external drive the quality is effected. I have also tried copying the video to my desktop and then dragging and dropping onto the drive...same problem. Any suggestions? I would like to save everything to my external drive so that I can delete all of iphoto library and then reimport to correct a few things.

The file sizes are identical. In the finder I did a search for all .mov files. Then when they came up, I went through them and named each one so that they would be easier to find. I am a new mac user and am used to windows. I realized later that I should not have done this....with a mac files should be named within iphoto app...not finder....When I went to open the videos in iphoto, it wouldn't allow me. I had to go into finder, copy to desktop and reimport into iphoto. Then the videos worked again. However, I had the problem with the poor video quality when copied to external drive before that. Actually the first problem I had was when I copied to ext drive...videos were copying as an image...so I learned that you have to change "kind" to original before exporting....then that problem was solved...now they are videos, not images but not of a great quality. Skips, sound and images are not in sync...etc...

I just purchased Time Capsule today. I ONLY want to use it as an external drive. I do not need it for Time Machine. I can see the TC in my finder, but when I click on a file or video to drag and drop, I get message that TC can't be modified. Help please

I just purchased Time Capsule today. I ONLY want to use it as an external drive. I do not need it for Time Machine. I need to free up room on my computer. As of now, I can't even load updates. I can see the TC in my finder, but when I click on a file or video to drag and drop, I get message that TC can't be modified. Help please!

I agree with Kappy.. passing files and especially via wireless is slow as slow.
Just need to be sure your TC is the new AC model??
And the OS on the computer is Lion?
Have you completed the setup of the TC via the utility? You do still need to get internet via the TC so it has to be plugged into the main router..
Give us the full picture of the network.
Then we can help you get into it.. whether you should put your files on it is another question.

Copying video files from one external drive to another

Hello! I am very new to Apple and FCP, so please forgive my ignorance. I have looked through the other topics and have not found one that addresses my question, so please forgive me if this has been addressed in the past.
I am working on a project and have all of my video clips saved to a G-Tech G-Raid 320 GB extenal hard drive. I captured much of my footage using "capture now" instead of logging individual clips for various reasons (i.e.: some tape sources did not have timecode), so if I ever have a problem, simply recapturing the footage does not appear to me to be a valid option.
With this weighing heavily on my mind, I thought it would be best to copy the poject to a second G-RAID external hard drive.
However, the G-RAID uses an 800 firewire and my G5 computer only has one such port.
What would be the best way to copy from the one external drive to the other? Will I have to copy the files to my internal hard drive first? And if so, how do I do that? Thanks!!

Crystal,
Please reply to a specific post, not to your orignial one. This keeps the threaded discussion in order.
To see the format for a drive. Open Disk Utility. It is located in your /Applications/Utilities folder.
You should see all your connected drives on the left side of the window. Click on the icon of the drive you want information on. Select the Volume icon, not the Drive icon ( the volume icon is the one under and slightly indented to the right of the drive icon)
Look at the bottom of the window. You'll see an item FORMAT: it should say Mac OS Extended. If it says MS-DOS, you'll need to ERASE the disk. When you do that, you'll have the option of changing the format.
Do not right click and COPY. Simply drag the icon of the folder containing your media files from one disk to the other. It will copy by default.
good luck.
x

Corrupt Video On External Drive

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