What application for capturing Video+Audio?

Question

Hey,
I've recently installed (with great success) the WinFast 2000 XP RM video capturing card (according the instructions in the wiki).
I can now watch TV using TVTIME or KDETV.
Question is, how can I capture video + audio, to a .avi file?
Note that the card doesn't have an audio input, and that the audio input is connected
to the line-in of my onboard sound card.
I got some instructions from this page: http://forum.videohelp.com/topic307679.html
But, when trying to issue:
mencoder -tv norm=PAL:driver=v4l2:width=720:height=576:input=2:fps=25 tv:// -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf pp=lb/ha/va/dr,hqdn3d,harddup -srate 48000 -af lavcresample=48000 -lavcopts vcodec=mpeg2video:vrc_buf_size=1500:vrc_maxrate=8000:vbitrate=7000:keyint=15:acodec=mp2:abitrate=192:aspect=4/3 -o capture.mpg
I didn't get any sound at all (though the video capturing worked perfectly).
Any help would be appreciated,
Thanks
fiod
Last edited by fiod (2008-05-18 16:06:32)

Answer 1

Ok.  The transcode command line is no fun and transcode doesn't work with alsa, so you'll need to have alsa-oss installed.  I use v4lctl (part of the xawtv package) to set the video card input and I capture to mjpeg rather than mpeg2, because it's better for editing, with ac3 audio, like this:
#!/bin/bash
# Generate recording filename
if [ -z "$1" ]; then
TMPFILE="tmp-`date +%F-%X`-mjpeg.avi"
else
TMPFILE=$1
fi
# Set capture card
v4lctl -c /dev/video2 setinput Composite1
transcode \
-u 256,2 \
-x v4l2=resync_margin=1:resync_interval=250:overrun_guard=1,v4l2 \
-g 720x576 \
--import_asr 2 \
-i /dev/video2 \
-H 0 \
-p /dev/dsp1 \
-e 32000,16,2 \
-E 48000,16,2 \
-n 0x1 \
-N 0x2000 \
-b 192\
-J resample,smartyuv,mask=lefttop=0x6:rightbot=720x564,hqdn3d=luma=4:chroma=3:luma_strength=6:chroma_strength=4,pv=cache=30 \
-y ffmpeg \
-F mjpeg \
-o $TMPFILE
exit 0
(The "-J mask=lefttop=0x6:rightbot=720x564" hides some vhs artefacts.)
Of course, my card is different to yours, so you'll need to adjust the audio device (/dev/dsp?) and video device (/dev/video?).  Use "v4lctl -c /dev/video? list" to get the possible options for your card, like this:
[david@darkstar ~]$ v4lctl -c /dev/video2 list
attribute | type | current | default | comment
-----------+--------+---------+---------+-------------------------------------
norm | choice | PAL-DK | PAL | PAL PAL-BG PAL-I PAL-DK NTSC SECAM SECAM-DK SECAM-L SECAM-Lc PAL-M PAL-Nc PAL-60
input | choice | Televis | Televis | Television Composite1 Composite2 S-Video
audio mode | choice | mono | mono | mono stereo lang1 lang2
bright | int | 128 | 128 | range is 0 => 255
contrast | int | 68 | 68 | range is 0 => 127
color | int | 64 | 64 | range is 0 => 127
hue | int | 0 | 0 | range is -128 => 127
volume | int | 15 | 0 | range is -15 => 15
mute | bool | on | off |
Mirror | bool | off | off |
Invert | bool | off | off |
y offset o | int | 0 | 0 | range is 0 => 128
y offset e | int | 0 | 0 | range is 0 => 128
automute | bool | on | on |
Oh, and my ~/.transcode/ffmpeg.conf contains:
[mjpeg]
precmp = 2
cmp = 2
subcmp = 2
mbd = 2
dia = -2
predia = -2
Last edited by azleifel (2008-05-18 20:37:31)