[mythtv-users] Safe way to downgrade from 0.25 back to 0.24?

[Gerald Brandt]

I'm in the same boat, my HDPVR's fail and lock up .25.  

I've switched to firewire capture, but I lose some channels.

Gerald


----- Original Message -----
> From: "Jose Ildefonso Camargo Tolosa" <ildefonso.camargo at gmail.com>
> To: mythtv-users at mythtv.org
> Sent: Thursday, May 3, 2012 8:35:52 AM
> Subject: [mythtv-users] Safe way to downgrade from 0.25 back to 0.24?
> 
> Greetings,
> 
> I'd like to go back to 0.24, why?:
> 
> 1. Since I updated to 0.25, my USB capture card stopped working
> (WinTV-HVR-950Q / 2040:7200 from lsusb), I used to use it in analog
> mode, it doesn't work anymore, and furthermore, my system gets
> unstable after I try to enable it on mythtv (however, it works just
> fine with tvtime, as long as it is not configured on mythtv)... when
> I
> try to configure it on mythtv it first makes backend process "hang",
> and I'm unable to kill it, unless I use signal 9... On kernel logs, I
> see the "au0828-video.c:895" problem of this thread:
> http://www.mythtv.org/pipermail/mythtv-users/2012-April/331164.html
> .... now, the thing is: in 0.24 it used to work, and it also works on
> tvtime..... suggestions on this are welcome.  I'm using ubuntu 11.10,
> with custom-built 3.2.15 kernel.
> 
> 2. My ivtv capture card (pvr150) works, but when I transcode to mpeg4
> (nuv), the quality goes down A LOT, and apparently it is because of
> the interlacing (if I use linear blend deinterlacing on playback, or
> with mplayer (-vf pp=lb or even pp=md) while directly playing the nuv
> file, it looks better, but otherwise (without deinterlace or with
> reedy highmotion deint), it looks like the vertical resolution was
> cut
> in half) ... maybe this have always been like this, I don't know, I
> didn't used to transcode a lot on 0.24, I used to record to mpeg4
> directly using the USB analog tuner, and quality was good (and the
> video actually looked like interlaced, the transcoded on 0.25 doesn't
> look exactly like interlaced)... now, transcode from high-bitrate
> mpeg2 (6000kbps average) to mpeg4 (same parameters I used to use with
> 950q when recording directly), doesn't look good at all
> (if you need pictures, I guess I could take some samples and send
> them).
> 
> So: yes, 0.25 has fewer issues related to interface (for example, I
> no
> longer have the playback quitting with "Waited 104ms for video
> buffers
> AAAAAAAAAAAAAAAAAUUUUUUUUUUUUuuP" kind of messages I used to
> have)....
> and channel changing is a lot more reliable, also, as long as I
> doesn't transcode, recording quality is great... but not being able
> to
> use my second tuner, and being unable to correctly transcode to mpeg4
> (and save >60% of disk space) is not good for me, so, I'd rather go
> back to 0.24 (with its own UI problems) than losing the ability to
> use
> my USB tuner and the odd transcode issues (at least until I have the
> time to hunt down the issues with 0.25 and the analog usage of 950q).
> 
> So.... what is involved on downgrading from 0.25 to 0.24? (without
> losing recent recordings, of course).  If this is terribly complex, I
> could just stay with 0.25, and forget about my USB tuner for the time
> being (until I get more time to do bug hunting).
> 
> Thanks in advance!
> 
> Ildefonso Camargo
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