i use oprange pi PC .

 

i do

ffmpeg -s 320x240  -f video4linux2 -i /dev/video0 /home/orange/out.mpg

then i get video . 

 

 

i do

arecord --device hw:0 -r 44100 -f S16_LE /home/orange/1.wav

then i get sound .

 

but i cannot get  both at once .

by using cheese , i have no sound .

i guess alsamixer and i must do something , but i donot know the followings . 

 

 

aplay -L is 

null

    Discard all samples (playback) or generate zero samples (capture)

sysdefault:CARD=audiocodec

    audiocodec, 

    Default Audio Device

dmix:CARD=audiocodec,DEV=0

    audiocodec, 

    Direct sample mixing device

dsnoop:CARD=audiocodec,DEV=0

    audiocodec, 

    Direct sample snooping device

hw:CARD=audiocodec,DEV=0

    audiocodec, 

    Direct hardware device without any conversions

plughw:CARD=audiocodec,DEV=0

    audiocodec, 

    Hardware device with all software conversions

sysdefault:CARD=sndhdmi

    sndhdmi, 

    Default Audio Device

dmix:CARD=sndhdmi,DEV=0

    sndhdmi, 

    Direct sample mixing device

dsnoop:CARD=sndhdmi,DEV=0

    sndhdmi, 

    Direct sample snooping device

hw:CARD=sndhdmi,DEV=0

    sndhdmi, 

    Direct hardware device without any conversions

plughw:CARD=sndhdmi,DEV=0

    sndhdmi, 

    Hardware device with all software conversions

 

 

-----

regards

at last i found vlc is easy to record both video and movie .

 

 

start vlc

and

ctrl + R

 

cheese has no sound . , video only .

guvcview has no video , sound only .

vlc is great  but is not commnd line .