Hi. I wrote the code for getting a list of input devices:
avdevice_register_all();
AVFormatContext *formatContext = avformat_alloc_context();
AVInputFormat *inputFormat = NULL;
while((inputFormat = av_input_video_device_next(inputFormat)))
{
formatContext->iformat = inputFormat;
AVDeviceInfoList *deviceList = NULL;
avdevice_list_devices(formatContext, &deviceList);
if(deviceList)
{
for(int i = 0; i < deviceList->nb_devices; ++i)
{
AVDeviceInfo *device = deviceList->devices[i];
..........
}
}
avdevice_free_list_devices(&deviceList);
}
It fails with SIGSEGV on avdevice_list_devices when it comes to v4l2
input format.
Why does it fail?
How can I get list of video devices?
Btw I'm using Ubuntu 16.04
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