Пытаюсь завести пример вот на таком девайсе:
T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=064e ProdID=a116 Rev=04.25
S: Manufacturer=SuYin
S: Product=USB2.0 UVC 1.3M WebCam
S: SerialNumber=CN1316-S30B-MI034-VS-R04.02.05
C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=168mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
I: If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
$ ./a.out -m
select timeout
$ ./a.out -r
/dev/video0 does not support read i/o
$ ./a.out -o
select timeout