[mythtv-users] Stuttering / tearing video in recordings - PVR-250,
Celeron 500MHz
Craig Partin
cpartin at gmail.com
Thu Jan 13 11:14:26 EST 2005
I had a very similar system that worked "reasonably" well. You
absolutely cannot use the machine for anything else. I killed all
non-essential programs/daemons. Try re-niceing X and the frontend
process to -19. Also, try a lower bitrate. Mine was around 2200 for
the video I think.
On Thu, 13 Jan 2005 10:54:08 -0500, John Johnson <johnatl at mac.com> wrote:
> This is so close to working perfectly that it's already really cool. I
> just have a couple of little things to clear up.
> I am experiencing tearing frames and / or stuttering video in
> recordings from my PVR-250.
> My Default profile is:
> 480x480
> Video:
> Codec: MPEG-2 Hardware Encoder
> Stream Stype: MPEG-2 PS
> Aspect Ratio: 4:3
> Bit Rate: 3000
> Max. Bit Rate: 4500
> Audio:
> Code: MPEG-2 Hardware Encoder
> Sampling Rate: 32000
> Layer II
> Bitrate: 384Kbps
> Volume: 90%
>
> I've grokked the archives, but most of what I've found is "Mine doesn't
> work." and the reply being "Mine works fine."
> Do you think increasing the Bit Rates for the video would help?
> (Something I saw in the archive). Would changing the resolution to
> 720x480 help? (Being closer to "native" resolution)
>
> I've attempted to recompile everything (Qt, LAME, MythTV, etc.) using
> -march=i686 to get a little more
> performance, but haven't been successful, as I get caught up in the
> ELLL (Endless Linux Library Loop).
>
> Any advice is greatly appreciated.
>
> Regards,
> JJ
>
> KnoppMyth R4V5
>
> Hardware:
> PVR-250, with latest remote.
> HP Pavilion 6730
> Celeron (Coppermine) 500MHz
> 256MB RAM
> eVGA.com e-GeFORCE MX 4000
> /dev/hda:
> Maxtor 6Y060L0
> 60GB
> DMA on
> 32bit on
> /dev/hda1 / ext3
> /dev/hda2
> /dev/hda3 /cache ext2
> /dev/hda4 /myth ext3
> (more detail below)
>
> /dev/hdd:
> WDC WD1600JB-00GVA0
> 160GB
> DMA on
> 32bit on
> /dev/hdd1 /myth/tv reiserfs
> /dev/hdd2 /var reiserfs
> /dev/hdd3 /myth/backup reiserfs
> (more detail below)
>
> Maxtor:
> /proc/ide/hda/settings
> name value min max
> mode
> ---- ----- --- ---
> ----
> acoustic 200 0 254
> rw
> address 0 0 2
> rw
> bios_cyl 7476 0 65535
> rw
> bios_head 255 0 255
> rw
> bios_sect 63 0 63
> rw
> breada_readahead 8 0 255
> rw
> bswap 0 0 1
> r
> current_speed 0 0 70
> rw
> failures 0 0 65535
> rw
> file_readahead 124 0 16384
> rw
> init_speed 0 0 70
> rw
> io_32bit 1 0 3
> rw
> keepsettings 0 0 1
> rw
> lun 0 0 7
> rw
> max_failures 1 0 65535
> rw
> max_kb_per_request 128 1 255
> rw
> multcount 16 0 16
> rw
> nice1 1 0 1
> rw
> nowerr 0 0 1
> rw
> number 0 0 3
> rw
> pio_mode write-only 0 255
> w
> slow 0 0 1
> rw
> unmaskirq 0 0 1
> rw
> using_dma 1 0 1
> rw
> wcache 0 0 1
> rw
>
>
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