Hello all,
I am using ivtv 0.10.1 with Ubuntu Feisty MythTV 0.20.2-fixes. I run a PVR-350 
with s-video IN from a SA3250HD STB using a ir-blaster to change the channels. 
I am getting dropping frames. I have tried all the solutions that I could find 
on the internet but it still hasn't solved the issue.

Hardware:
AsRock 775duel-VSTA
C2D 1.8ghz
2GB DDRII (533mhz, i think)
GeForce 6200 8X AGP 128mg ram
PCI Firewire card (don't even use it)

dmesg shows this error whenever a recording occurs and the only other thing 
that I am doing is running 2 torrents.

[540732.313149] ivtv0: All encoder MPEG stream buffers are full. Dropping data.
[540732.313153] ivtv0: Cause: the application is not reading fast enough.

I have checked all hard drives, according to dmesg, they have DMA set.

ata1.00: configured for UDMA/133
ata2.00: configured for UDMA/133

I have set the PCI latency on the hard drive controllers to 176 per a 
suggestion I found. lspci shows:

00:0f.0 IDE interface: VIA Technologies, Inc. VT8237A SATA 2-Port Controller 
(rev 80) (prog-if 8f [Master SecP SecO PriP PriO])
        Subsystem: ASRock Incorporation Unknown device 0591
        Flags: bus master, medium devsel, latency 176, IRQ 21

I changed the ivtv parameters to increase the buffers. I use this in 
/etc/modprobe.conf:

options ivtv enc_yuv_buffers=32 enc_mpg_buffers=16 enc_vbi_buffers=16 
enc_pcm_buffers=16

it appears that the parameters are being used by looking at dmesg | grep ivtv:

[   19.223220] ivtv0: Registered device video0 for encoder MPEG (16 MB)

The only other thing that sticks out is this message in dmesg:
[   18.779434] ivtv0: Encoder revision: 0x02050032
[   18.779438] ivtv0: Recommended firmware version is 0x02060039.

Could that be the problem? How would I go about changing the firmware for the 
PVR-350? If someone could point me to an exact guide I would appreciate it. 
Also, ivtv was "just installed" automagically in ubuntu so I never had to 
compile it or anything like that. Would something mess up if I only change out 
the firmware? Excuse the questions but I am new to firmware and what not. Is 
firmware just like drivers or modules?

So I can't think of what else to do to solve this. Can anyone suggest 
anything???

Daniel
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