> If I use card=10 I get picture but no sound, so the auto detection > appears more accurate. Probably the ATI needs a fine-tuned tvcards array entry for good sound support. > I have breifly read Alan's V4L 1 specs and sparcely read over the > bttv-driver.c and msp3400.c files from 0.7.50. I am only guessing that > the msp needs to know to switch to a different input? Might be, depends on how the card is designed. One possible way is to route the external jack throuth the msp34xx's scart input. Another is to connect an audio mux to some of the GPIO pins of the bt848/878 chip. > But how is that signalled? AUDC_SET_INPUT Gerd