[linux-dvb] Re: FusionHDTV Linux Drivers

Michael Krufky mkrufky at m1k.net
Wed Jul 13 07:38:29 CEST 2005

Todd isn't subscribed to the list, and I thought it would be good to 
forward this on... In the first paragraph, he uses the term ATSC scan, 
but in this case he is referring to VSB.

Todd Ignasiak wrote:

>Okay,  I was able to get the FusionHDTV stuff working with QAM256, and
>with MythTV.
>For QAM, I just switched my cable to the other RF input.  Apparently
>the OTA/Cable association with the inputs is just a function of the
>Fusion Windows software.   After doing a full ATSC scan, I did a
>QAM256 scan, and it recognized most of my channels.
>After tweaking around with the MythTV channel configuration a bit,  I
>still don't understand it..  but it's working.   I just manually
>entered the frequencies associated with the various QAM channels (I
>used the Mythweb UI, but it could probably be done in other ways).  
>Also, make sure the "Starting Channel" is defined as a valid channel
>number when setting up the input connection.  If it's not a valid
>channel, MythTV doesn't give any decent feedback, it just shows black
>The QAM channel scan in MythTV picked up most of my available HD
>channels, which are just retransmissions of the OTA ATSC channels
>(PSIP data and all).  So, MythTV sees the channel, including the call
>letters and subchannels.    There are also a couple non-ATSC, but
>unencrypted, channels on my local cable system, such as ESPN-HD.  The
>channel scan did not pick these up, so I need to figure out how to
>manually add them.
>BTW --  The MythTV channel configuration is _terrible_.    I hope it's
>not so bad when dealing with standard NTSC or PAL broadcasts.    I
>wish they would use an easier config format for the basic system
>config stuff, like a simple text file.   I'm sure the MySQL stuff is
>great for guide data, but for application config it just makes
>everything overly complex.   (sorry, just had to rant a bit after
>struggling with this stuff..  I know this is not a MythTV list..)
>On 7/12/05, Todd Ignasiak <ignasiak at gmail.com> wrote:
>>I stuck with the mm1 kernel (which included the qam256 initialization patch).
>>I'm still trying to figure out all the channel config stuff.   But, I
>>downloaded the dvb-utils, and used azap, dvbtraffic, and dvbscan to
>>test it.  Then, I captured a sample using:
>>cat /dev/dvb/adapter0/dvr0 > test.ts
>>I used vlc to check the output, and I had a perfect segment of "The Cosby Show"!
>>So, it seems to be basically working..  I just need to get up to speed
>>on the configuration and usage of the various apps.     I'll keep
>>playing around with it, and MythTV, to see what I can get functioning.
>>Also - the capture I got was from an ATSC OTA signal,  not QAM256.
>>I'll also try that out, to see if I can figure out switching between
>>the two RF inputs, etc.

Michael Krufky

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