Movie Recording Stopped Automatically

[paulajohan]

Ok so I've had this Canon T5i for some time now, around a year and a half. I've always used it to record videos for YouTube, never had any problems with it whatsoever. I know there is a 29min limit to movie Recording and that was never a real issue.
The problem started a few days ago. The movie recording stops suddenly at around 10 min or sometimes 12 min, it's never at an exact time. I know there's a "4Gb limit" as well, but my camera always split the files normally without interrupting the recording, but ever since this problem it will just interrupt the filming, and I have to press the record button again to start a new one. That is becoming incredibly annoying!
I have not changed my memory card, the one I use is SanDisk Ultra 64GB Class 10, at 80MB/sr reading speed.
Can someone tell me what might be the problem here? I've never encountered any issues with it ever since I first got the camera, which is why I don't understand it.

[rs-eos]

Are you using a full-size SD card, or micro-sized one with an adapter?

Is the camera perhaps shutting off to deal with heat? Are there any thermal warnings/errors visible?   Are you also filming in a very warm/hot environment?

[paulajohan]

I am using a micro-sized one with an adapter, yes. The camera does not shut off, it just stops recording. There are no warnings apart from the "movie recording stopped automatically" and I am filming in a room with air conditioner that keeps the temperature around 17 Celsius degrees whenever I am filming a video.

[rs-eos · Accepted solution]

Try using a full-sized SD card instead.  Micro-SD are notorious to causing problems.

[paulajohan]

I'm gonna try that and come back here after some tests.

[kvbarkley]

Also, though this goes along with getting a new card, you should periodically format your card in the camera. If the card has a lot of space, but it is fragmented, I think that the camera can take too long to find all the little chunks, slowing the write speed.

[paulajohan]

Hey, sorry it took me so long to come back here, but I finally managed to buy a new SD card. I bought the full-sized one and tested it out many times, and I am happy to say that it worked! Thank you so much for your help!