The "native VFW implementation on Windows" binary doesn't seem to work

[fireattack]

I tried both "cam2ip-1.5-64bit.zip" and "cam2ip-1.5-32bit.zip" version on 4 different computers (2 Win 7 & 2 Win10, all 64-bit) with USB cameras from various vendors, none of them work.

The symptom is: the program started fine, and the camera would be activated for a second and then it immediately went off.

There is no apparent error on the console, until you open http://localhost:56000/mjpeg, when it will start to throw 2019/04/24 14:34:28 mjpeg: read: camera: can not retrieve frame: EOF errors constantly.

The "cam2ip-1.5-64bit-cv2.zip" version works flawlessly.

It is not a big deal to me personally since I can just use CV2 version instead, but think developers may want to know this.

Thanks!

[fireattack]

Small note: this is under my impression that users don't need to install anything additionally for " Video for Windows (VfW) framework" to run the binary - I didn't find anything to download for that, at least.

If this is not the case please correct me.

[gen2brain]

I only tested Video for Windows in VMs, both on Win7 and Win10. It is a very old API but is available via syscalls. Newer versions of Windows have some dll wrappers that wrap new technologies and APIs and make them available for VfW but I don't know all the details. I remember there was some tool from such wrappers to check and maybe enable? support, really not sure.

[Xart3mis]

same issue here

[ricolk]

Also using cam2ip-1.6-64bit-cv, CV version on Win10, I can get only a frame with a http://localhost:56000/jpeg request.
After every further request I get this error message.

jpeg: read: camera: can not retrieve frame

Restarting the binary, it works for a single frame only.

[exxxt4zy]

use cv2 version