In your drone now here's the scenario it was a beautiful Saturday, you've been out flying all day. You'Ve captured some amazing footage and you can't wait to get home and see what it looks like on your computer. So you race, home, transfer the files to your computer and sure enough, but one file you need you can't play on your computer. You'Ve tried every video player you have and it's, just not playing you've got a corrupt file and there's nothing more frustrating than losing footage. You shot out in the field, and maybe it was that perfect shot of a lighthouse or that beautiful Lake or maybe you're the one person that got that excellent aerial shot of the Jersey Devil down on the Pine Barrens in New Jersey. And you really need that. And you can't get it back, so you've got a corrupt file as a few reasons. This can happen. The first two I'm gon na give you. I can't help you with, but I can help you prepare for those. The third one is the trick I'm going to give you to try and recover that file. So the first two have to do with the memory card itself and the memory cards in general are miracle' devices they're modern technology, that in a lot of ways, shouldn't really exist. They'Re, these tiny little slivers of silicon in the words of Monty Python, they're wafer, thin pieces of silicon that you're actually storing data on it's, a miracle of technology, they're fragile, which means physically you've, got to take care of them.
You can't drop them. You can't abuse them, you can't get them dirty, but even beyond that electronically they're fragile. So that means in the memory card there are blocks that's what you actually store. The data to all of those memory cards have what's called a life, a wear life on them. Where you can only write to those blocks so many times, and it also in a lot of cases, uses a program to do something called wear leveling, where it's checking the blocks to see if the blocks are defective and if it finds a defect. The block it'll market is defective and move that data somewhere else, so there's, constant chemistry and technology going on in that memory card that you're not aware of and the challenge is, as the memory card gets older, it's less useful. So there is a lifespan of memory cards and the one rule of thumb I go with on that is, if you're using a memory card, I never like to fill up a memory card more than 75 or 80 of its capacity, because when you get up above That 80 mark you start getting up in that area, where you've got all those defective blocks and it starts to get a little bit sketchy. So always stick with a memory card. That'S, big enough and use between I'd, say 75, 80 percent of and maybe 90 percent. Would be pushing or not a new card, but if you used it for a year and a half probably time to replace it and that'll just save you a whole lot of headaches out in the field.
The second thing is, there are a lot of gray market cards out there, so my strong suggestion is don't play around with a card that's priced too good to be true, because that old adage is out there if it's too good to be true. It probably is that couldn't be truer than with memory cards, so stick with a brand name, buy it from the dealer. You trust, because again I can tell you that 50 to 75 percent of the cards you can buy in a lot of those online shopping sites. Are probably gray market or bootleg cards that seem like they're gon na work until you get them out in the field and start putting data on them and you get all kinds of corruption and again nothing's more frustrating than losing an entire day's footage out in the Field so stick with a brand. You know: stick with a dealer, you know don't fill it up more than 80. The last thing I'll suggest – and this is super important – is when you're transferring the files from their memory card to your computer, always copy those files. Don'T move those files, because if you copy them, if there's a corrupt file, there's still a chance, you can repair it on the memory card and I'll explain that in a minute. But if you move them, you've now moved that off the memory card and it's very difficult again to recreate that scenario on the memory card, so copy them to your computer.
Don'T move them now. If you stay tuned, I'll explain exactly how the recording process in really simple terms, how the recording process happens and where this one error might occur, that I can show you how to fix. Hopefully, with this trick so stay tuned, then I'll explain that next with any digital recording, it all starts with the camera sensor that captures the images coming through the lens as pulses of light. These are converted into binary signals by a powerful video processor chipset and sent along to the memory card for recording to record the video. When you press the record button, the processor first sends an open file command to the memory card to create a space for the actual recording. Next, the digital information from the processor is sent to this new file. When you stop the recording the processor issues, a closed file command to complete the process – and this is how things normally work – the problem occurs when you interrupt this process before it finishes and cause the file to become corrupt. This typically happens when a pilot turns off the aircraft before the file is completely stored. Powering down can stop the data transfer from completing to the card or may result in the closed I'll command not being issued, and the resulting file will become corrupt. Okay. Now that you understand the fundamentals of how video recording works, you can see how a problem like this might crop up and I'm gon na call.
It pilot error and I've been guilty of it. Myself I've had corrupt files that I've recovered using this process and what you've done essentially, what I've done is interrupted that process of that really important data that video data finishing its path to the memory card, you've interrupted the conversation digitally to get all that data on The memory card, or it hasn't, had a chance to do that closed file command, which means you've, got a file that nobody else can read because it needs a beginning and an end and a bunch of data in the middle. And if you don't through the closed file command it's, not a valid file, so you can do that a couple of different ways. If you're like me, you may have pulled the memory card out too quickly and it hadn't finished or you've turned the drone off before it's actually finished that process or issued that closed file command or a couple of times. It'S happened to me where I've been flying and I'm on location and maybe it's getting late in the day or I've got people rushing to be get that perfect shot and I've got to change out the battery I'll land it pair it off swap out the battery. Put a new battery in and put it back up and that's when I've had some files corrupt there, because I haven't given enough time. So the recommendation is when you land the drone, just let it sit there for a couple of seconds and let it finish whatever process it's doing now the chances of this being a problem for you.
If you're, one of those pilots that uses a cable to transfer the files from the drone to your computer is really low because the minute you power it back up if it hadn't finished out in the field or probably finished in your office. But if you're like me and you're pulling a memory card out, especially if you pull the memory card out and move the files to your computer and then realize it's a corrupt file you're in a whole lot of trouble. So the one thing you can try is: if you've moved that file to your computer, move it back to the memory card. Put it back in the drone power it up and cross your fingers now I've had it I've had it work 50, maybe 70. At the time where it's done a closed file command and I'm good to go, I can pull that file back over to my computer. It works perfectly if I've caught it during a data right where it hadn't gotten all the data over to the card. Those are the ones that I can't recover and you have to remember that inside the drone there's, a buffer and the buffer is essentially a digital balloon. That'Ll absorb all the extra data they can't make it out of the card, because that processor is moving data really quickly, especially for high resolution or or large files that you're recording out in the field. There'S no way it can write to the memory card, especially if you're using a less costly memory card doesn't have the fast right speed on it, so that buffer is gon na blow up like a balloon and as it can write data to the card.
It'S gon na empty the balloon at the air out of the balloon, but if you interrupt that process before all that data gets out of the balloon to the memory card, you're gon na have these kind of problems so that's pretty much it for today. I hope they made a lot of sense. This is a trick that I've used a bunch I've had pilots, ask me how to fix crupp cards and I've said to him. Try this trick and it's work so it's, one of those things you can keep in your back pocket that's really worked for me, a lot out in the field and it's one of those I wanted to pass along to you guys so hopefully you're having a lot Of fun flying and this trick helps you out of a tricky situation on your card. If there's any questions you've got about what I've talked about today, please drop those in the comments below. I have a ton more clips I'm working on right now. I'Ve got reviews coming out for some of the newer drones that are going on. We'Ve got a lot of our high tech stuff that I'm going to be reviewing on the channel as well. If you haven't, subscribed to the channel hit that button down there and subscribe and turn the bell on, I have a lot of drone giveaways coming up in the next month or two and you're definitely going to want to get in on those because there's, some really Cool drones that we're gon na be giving away in the channel and bigger ones as well that you're definitely gon na want to take a shot at so make sure you subscribe to the channel and that's pretty much it for today.
So, thank you so much for watching, I hope, you're getting value out of these clips I'm having a heck of a lot of fun, putting them together.