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RELEVANT APPLICATIONS

ivtv,ivtvctl: The driver thingy that works with our WinTV 150 capture card to produce video, viewable at /dev/video0
ffmpeg,ffplay,ffserver: Suite of libraries/programs that let you play, encode and stream video

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INSTALLATION

Login as root!

ffmpeg - you can compile it from source
	- Download source
	- Unzip it
	- Run configure, then make

ffmpeg - or if that doesn't work, use yum:
	- Firstly, edit your /etc/yum.conf, and add the following lines:
		[atrpms]
		name=Fedora Core $releasever - $basearch - ATrpms
		baseurl=http://dl.atrpms.net/fc$releasever-$basearch/atrpms/stable
	- Then type 'yum install ffmpeg'

ivtv - use yum:
	- Firstly, edit your /etc/yum.conf, and add the following lines:
		[atrpms]
		name=Fedora Core $releasever - $basearch - ATrpms
		baseurl=http://dl.atrpms.net/fc$releasever-$basearch/atrpms/stable
	- Type 'yum install ivtv-firmware'
	- Type 'yum install ivtv-kernheaders'
	- Type 'yum install ivtv-kmdl-`uname -r`'
	- Type 'yum install ivtv'
	(answer Y if prompted for all of these)
	- For the WinTVPVR150, you also need to type 'yum install
	  ivtv-firmware-audio'
	- Add the following lines to '/etc/modprobe.conf'
		alias tveeprom tveeprom-ivtv
		alias tuner tuner-ivtv
		alias tda9887 tda9887-ivtv
		alias msp3400 msp3400-ivtv

vlc - use yum
Add ? to yum.conf

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BASIC SETUP

To run ivtv, login as root and run (only have to do this once)
(-a = all modules)
/sbin/depmod -a
/sbin/modprobe ivtv

To view the video output:
ffplay /dev/video0


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IVTV SETUP - USE IVTVCTL

!! Rebooting resets parameters to default values:

!! It looks like you cannot edit the settings while viewing the video output with ffplay.

To view what card inputs are available:
ivtvctl -n

To set which input is used:
ivtvctl -p 1
(1 = RCA input, 4 = SVID input for our WinTV150)

To view codec settings
ivtvctl --list-codec-params

To set the bitrate (in bps, default is 8000000)
ivtvctl --set-codec-params=bitrate=1000000

To set the output resolution (default is 720 x 480)
!! Even though the outputted video looks more pixelated if you lower the res, it's blurred together and the window is bigger - is it really resizing the video?
ivtvctl --set-format=width=320,height=240

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STREAM VIDEO USING VLC USING GUI

Select File, Open File

Choose the file you want to stream, or select PVR to stream output from your capture card

The PVR settings in the PVR tab seem to be ivtvctl settings, not the bitrate, etc of the output stream

Check the "Stream" box, and click on the settings button

Choose HTTP, port 8080 or whatever port you want (make sure that port is open). Leave the URL blank

Choose your output codec of choice (MPEG-1 seems to work fine), codec (mp1v works), bitrate (256 kbs works), audio if you want it.

Click ok, and play to start the stream.

To view the stream, on your remote machine, select File, Open File in VLC, and type in http://IP:8080 where IP is the IP of the machine doing the streaming.

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STREAM VIDEO USING VLC USING COMMAND LINE



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PLAY VIDEO USING FFPLAY

ffplay adam-wins-itall.mpg


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ENCODE VIDEO USING FFMPEG

Convert 'handcuffs.mpg' into 'pork.mpg':
ffmpeg -i handcuffs.mpg -an -r 3 -b 200 -t 4 -s 160x120 -vcodec mpeg1video pork.mpg
	-i handcuffs.mpg		Input filename
	-an				Don't encode audio
	-r 3				Output framerate = 3 frames per sec
	-b 200				Output bitrate = 200 kbit/s
	-t 4				Output only the first 4 secs of 'handcuffs.mpg'
	-s 160x120			Output resolution = 160 x 120
	-vcodec mpeg1video		Use mpeg1video codec to encode
	pork.mpg			Output filename

Encode 10 secs of capture card output to file pork.mpg
ffmpeg -i /dev/video0 -an -b 200 -t 4 -s 160x120 -vcodec mpeg1video pork.mpg


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