Capture TV tuner video/audio into applet

I am working on my senior project that should capture audio/video from tv tuner and broadcast it to the client through web page , is this possible using JMF or should I use other strandards??
Can any one help me with tutorials or sample code about this subject ??
thanks in advace

I read what you are developing very interesting project - we are also working on a similar project using speech to text and creating a video audio text search engine.
We would be happy to have you beta test what you are developing on our system.
We are planning on using Hauppauge PVR 2250 to capture in either analog and digital. We are planning to also get a hold of the SDK (Software Development Kit) for this board to help us do some of the modifications. This might be also something you need to think about.
Please email me at [email protected]
Thanks,
BOB

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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
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fiod
Last edited by fiod (2008-05-18 16:06:32)

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)

Capture TV tuner video/audio into applet

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