Why does raspividyuv hang?

[jwatte]

I pulled userland from github today, and built it.
I'm using a Raspberry Pi 2, with a camera 1.3.
When running raspivid, it captures/previews fine.
When running raspividyuv, it hangs after capturing the first frame!

Code: Select all

pi@robot-raspberrypi:/usr/local/src/userland $ build/bin/raspivid -w 512 -h 384 -p 0,0,512,384 -t 0 -fli 60hz
#works fine

pi@robot-raspberrypi:/usr/local/src/userland $ build/bin/raspividyuv -w 512 -h 384 -p 0,0,512,384 -t 0 -fli 60hz
#hangs after one frame

I'm wondering, because I'm also trying to write my own MMAL client program, and it, too, hangs after one or two frames.

[jwatte]

I also tried with a v2.1 camera, and it has the same behavior: hanging on raspividyuv but working with raspivid.
I'm using revision 9aab1498b531b50585b206232d6baea64c0789f7 from github, and a recent raspbian: Linux robot-raspberrypi 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux

[6by9]

Old thread I know, but someone else has just linked to it.
You haven't specified an output file, and the code unconditionally enables the capture port. The camera component is therefore taking a capture on that port and waiting for a buffer that never comes to put the image in.
I will do a bug fix, but otherwise add a -o filename option and it'll be happy.