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Long videos zero file size

Started Aug 14, 2019 | Discussions
John E Burton New Member • Posts: 1
Long videos zero file size

When recording longer videos (over 10 minutes or so) with my M50, the file seems to corrupt. It shows as zero bytes. What could be happening?

I'm using a Samsung Evo select 256gb microsd card with adapter.

This is extremely frustrating. I lost an entire 29 minute video at a media event today.

Canon EOS M50 (EOS Kiss M)
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(unknown member) Regular Member • Posts: 403
Re: Long videos zero file size
2

Try with SD cards, I've had several and different make microSD's fail, especially regarding to video(not only on M50 body), whereas SD cards had no problem.

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The exposure I took was calculated, but man, am I bad at math.

Advi
Advi Regular Member • Posts: 456
Re: Long videos zero file size

Please tell a little more.

What is the video resolution? How many fps? Manual or AF?

Have you formatted your card using the camera?

If you try to record again a long video, will it happen again?

The battery died before the end of the video? Or did it last the whole video and still had juice left?

What is the video lenght it starts to fail? 10 minutes?

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Bye

 Advi's gear list:Advi's gear list
Canon EOS M50 Canon EF-M 22mm f/2 STM Canon EF-M 11-22mm f/4-5.6 IS STM Canon EF-M 15-45mm F3.5-6.3 IS STM Canon EF-M 18-150mm F3.5-6.3 IS STM
dave_bass5
dave_bass5 Veteran Member • Posts: 7,342
Re: Long videos zero file size

Advi wrote:

Please tell a little more.

What is the video resolution? How many fps? Manual or AF?

Have you formatted your card using the camera?

If you try to record again a long video, will it happen again?

I have to ask, what would MF/AF have to do with this issue?

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Canon EF 24-70mm F2.8L II USM Canon EF 35mm F2 IS USM Canon PowerShot S110 Canon EOS 5D Mark IV Canon EOS M50 +10 more
Advi
Advi Regular Member • Posts: 456
Re: Long videos zero file size

Hi, Dave.

I really don't know.

All I know is that he must try to replicate this error, to discover the cause.

Maybe this error happened because the weather was too hot, or too freezing cold.

Maybe because it was raining at the moment and humidity was high.

AF or MF? Maybe there's a bug on the firmware that causes this error on some cases. Firmware bugs don't have to be logical. At least not to me or you.

The more detail you have, more you can try to figure out.

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Bye

 Advi's gear list:Advi's gear list
Canon EOS M50 Canon EF-M 22mm f/2 STM Canon EF-M 11-22mm f/4-5.6 IS STM Canon EF-M 15-45mm F3.5-6.3 IS STM Canon EF-M 18-150mm F3.5-6.3 IS STM
trungtran Senior Member • Posts: 1,747
Re: Long videos zero file size

Have you ever tested the card for true capacity? Was it just the video that got corrupted or did you lose images after that point as well.

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Olympus OM-D E-M10 Sony a7 II Canon EOS M6
Joep van Steen
Joep van Steen Contributing Member • Posts: 575
Re: Long videos zero file size

trungtran wrote:

Have you ever tested the card for true capacity? Was it just the video that got corrupted or did you lose images after that point as well.

Good question. However 'fake' cards typically save normal file sizes, however their contents are truncated/non existent.

Reason for this is that structures (directories) are located in the area where memory exists while the contents of the files are written to non existent memory.

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Joep

Joep van Steen
Joep van Steen Contributing Member • Posts: 575
Re: Long videos zero file size

John E Burton wrote:

When recording longer videos (over 10 minutes or so) with my M50, the file seems to corrupt. It shows as zero bytes. What could be happening?

I'm using a Samsung Evo select 256gb microsd card with adapter.

This is extremely frustrating. I lost an entire 29 minute video at a media event today.

If you on Windows you try two things to see if file is recoverable:

https://soft.512byte.ua/products/mov-5d-mark-iii-recovery.html or,

https://www.disktuna.com/jpeg-recovery-lab-digital-photo-recovery/ (despite name does MP4 video too).

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Joep

chillo New Member • Posts: 3
Re: Long videos zero file size

I'm getting this exact same issue. We are trying to record training sessions which last longer than 10 mins.

Brand new Canon M50. 128GB Sandisk memory card (some "pro" model).

Shorter videos seem fine. Longer videos register as Zero KB file size and the file is unusable

Battery icon was full charge when starting and showing still full charge at the end. I think the video I did was like 20 mins or so.

If anyone has any insights I would greatly appreciate it.

 chillo's gear list:chillo's gear list
Canon EOS M50
trungtran Senior Member • Posts: 1,747
Re: Long videos zero file size

chillo wrote:

I'm getting this exact same issue. We are trying to record training sessions which last longer than 10 mins.

Brand new Canon M50. 128GB Sandisk memory card (some "pro" model).

Shorter videos seem fine. Longer videos register as Zero KB file size and the file is unusable

Battery icon was full charge when starting and showing still full charge at the end. I think the video I did was like 20 mins or so.

If anyone has any insights I would greatly appreciate it.

Probably a card with fake capacity. Where did you buy the card?

Use this tool to test it. It will take a while since it is a fairly large card. I am guessing it is a 32gb card pretending to be 128gb

https://www.heise.de/download/product/h2testw-50539

 trungtran's gear list:trungtran's gear list
Olympus OM-D E-M10 Sony a7 II Canon EOS M6
Wisam Al Rawi New Member • Posts: 4
Re: Long videos zero file size

Short answer the file is there. For some reason Windows can't see it.

If you remove the memory card and plug it into a memory card reader into Windows it will see the correct file size and play it.

I have been struggling with this issue for the past few days as well. I already lost two videos I put a lot of time into. In the past the camera would not be detected when you plug it to Windows 10 but apparently it now works. For whatever reason, Windows cannot see large files (Maybe a limit with EXFAT file format) or a driver. It shows as a 0 byte in Windows but actually the camera stored the file correctly.

I have no clue how to resolve this issue without resorting to a memory card reader. The one that I have (Anker) does not read the memory card anymore but the built-in one in 2015 Chromebook Pixel does read it fine. I tried to quickly reformat it in the camera and record another 20+ video. Same thing happened.

Memory card type: Sandisk 256 MB Extreme Pro

I'm still investigating the problem.

Sittatunga Veteran Member • Posts: 5,406
Re: Long videos zero file size

Wisam Al Rawi wrote:

Short answer the file is there. For some reason Windows can't see it.

If you remove the memory card and plug it into a memory card reader into Windows it will see the correct file size and play it.

I have been struggling with this issue for the past few days as well. I already lost two videos I put a lot of time into. In the past the camera would not be detected when you plug it to Windows 10 but apparently it now works. For whatever reason, Windows cannot see large files (Maybe a limit with EXFAT file format) or a driver. It shows as a 0 byte in Windows but actually the camera stored the file correctly.

I have no clue how to resolve this issue without resorting to a memory card reader. The one that I have (Anker) does not read the memory card anymore but the built-in one in 2015 Chromebook Pixel does read it fine. I tried to quickly reformat it in the camera and record another 20+ video. Same thing happened.

Memory card type: Sandisk 256 MB Extreme Pro

I'm still investigating the problem.

Are you using 64 bit Windows? If not, then you're limited to a 4GB file size.

trungtran Senior Member • Posts: 1,747
Re: Long videos zero file size

Wisam Al Rawi wrote:

Short answer the file is there. For some reason Windows can't see it.

If you remove the memory card and plug it into a memory card reader into Windows it will see the correct file size and play it.

I have been struggling with this issue for the past few days as well. I already lost two videos I put a lot of time into. In the past the camera would not be detected when you plug it to Windows 10 but apparently it now works. For whatever reason, Windows cannot see large files (Maybe a limit with EXFAT file format) or a driver. It shows as a 0 byte in Windows but actually the camera stored the file correctly.

I have no clue how to resolve this issue without resorting to a memory card reader. The one that I have (Anker) does not read the memory card anymore but the built-in one in 2015 Chromebook Pixel does read it fine. I tried to quickly reformat it in the camera and record another 20+ video. Same thing happened.

Memory card type: Sandisk 256 MB Extreme Pro

I'm still investigating the problem.

How did you lose the files if the card is working?

What program are you using to test the card?

 trungtran's gear list:trungtran's gear list
Olympus OM-D E-M10 Sony a7 II Canon EOS M6
chillo New Member • Posts: 3
Re: Long videos zero file size
3

I was previously using the native Mac OSX Image Capture app to transfer my videos.  I just downloaded EOS Utility 3 and was able to see and download the long video from my M50 to Macbook Pro.

I solved this by:

- Downloading and installing EOS Utility 3

- Connecting M50 to Macbook Pro (micro-USB to USB-C)

- Opening EOS Utility 3 and copying the video file over

Consider this solved for me.

Cheers.

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Canon EOS M50
chillo New Member • Posts: 3
Re: Long videos zero file size

Wisam Al Rawi wrote:

Short answer the file is there. For some reason Windows can't see it.\

Same. Update here:  I checked the camera and the file is on the memory card intact.  I can play the video on my M50 just fine but ... connecting the M50 to my computer (a Macbook Pro 15" Touchbar) via the micro-USB port in the camera results in my laptop reading the file as Zero bytes (and I can't copy the file off the camera to the laptop)

If you remove the memory card and plug it into a memory card reader into Windows it will see the correct file size and play it.

Yeah. Wish I had a memory card reader!

I have been struggling with this issue for the past few days as well. I already lost two videos I put a lot of time into. In the past the camera would not be detected when you plug it to Windows 10 but apparently it now works. For whatever reason, Windows cannot see large files (Maybe a limit with EXFAT file format) or a driver. It shows as a 0 byte in Windows but actually the camera stored the file correctly.

Can't speak to this as I haven't used Windows in a long time.

I have no clue how to resolve this issue without resorting to a memory card reader. The one that I have (Anker) does not read the memory card anymore but the built-in one in 2015 Chromebook Pixel does read it fine. I tried to quickly reformat it in the camera and record another 20+ video. Same thing happened.

Memory card type: Sandisk 256 MB Extreme Pro

Interesting! I double-checked ... mine is the Sandisk 128GB Extreme Pro (170MB/s)

I'm still investigating the problem.

 chillo's gear list:chillo's gear list
Canon EOS M50
Franknyc New Member • Posts: 1
Re: Long videos zero file size

chillo wrote:

Wisam Al Rawi wrote:

Short answer the file is there. For some reason Windows can't see it.\

Same. Update here: I checked the camera and the file is on the memory card intact. I can play the video on my M50 just fine but ... connecting the M50 to my computer (a Macbook Pro 15" Touchbar) via the micro-USB port in the camera results in my laptop reading the file as Zero bytes (and I can't copy the file off the camera to the laptop)

If you remove the memory card and plug it into a memory card reader into Windows it will see the correct file size and play it.

Yeah. Wish I had a memory card reader!

I have been struggling with this issue for the past few days as well. I already lost two videos I put a lot of time into. In the past the camera would not be detected when you plug it to Windows 10 but apparently it now works. For whatever reason, Windows cannot see large files (Maybe a limit with EXFAT file format) or a driver. It shows as a 0 byte in Windows but actually the camera stored the file correctly.

Can't speak to this as I haven't used Windows in a long time.

I have no clue how to resolve this issue without resorting to a memory card reader. The one that I have (Anker) does not read the memory card anymore but the built-in one in 2015 Chromebook Pixel does read it fine. I tried to quickly reformat it in the camera and record another 20+ video. Same thing happened.

Memory card type: Sandisk 256 MB Extreme Pro

Interesting! I double-checked ... mine is the Sandisk 128GB Extreme Pro (170MB/s)

I'm still investigating the problem.

Same issue and semi-solution with the Canon M50 and Sandisk 128 Extreme Pro as above -- larger mp4 files show as 0 bytes via M50 USB port to Windows 10 PC, but are actually on disk and transferable via SD card reader.

However, the problem may be the Sandisk 128 Extreme Pro cards as I do not have this issue when using 32 GB cards.

Advi
Advi Regular Member • Posts: 456
Re: Long videos zero file size

I have SanDisk extreme pro 256 Gb and this issue has never happened in my M50

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Canon EOS M50 Canon EF-M 22mm f/2 STM Canon EF-M 11-22mm f/4-5.6 IS STM Canon EF-M 15-45mm F3.5-6.3 IS STM Canon EF-M 18-150mm F3.5-6.3 IS STM
dakotah slim Junior Member • Posts: 41
Re: Long videos zero file size

Thank you chillo. Your response helped me a great deal today on my Canon R3. I had recorded multiple long video files that were unable to transfer over using the Mac Image Capture app, or via Lightroom. I was panicking as these videos are critical for a project. The Canon EOS Utility 3 was able to see and import the fullsize 4K videos. Saved! THANK YOU.

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