[mythtv-users] ISO plays OK, DVD hesitates
belcampo
belcampo at zonnet.nl
Tue Jun 10 12:21:30 UTC 2008
Robin Gilks wrote:
> Thought I'd make a change and start by saying I can play an ISO of a DVD
> OK - but the original DVD hesitates, especially in high motion scenes. The
> audio is fine, only the video provides the distraction.
>
> I've checked thats its running in DMA mode as indicated by the '*' in the
> hdparm output below - I'm wondering if the drive itself is on the way out
> (it is a few years old after all).
>
> Be interested in any ideas as although the hesitation is small (can't
> really call it jumpy, jerky or choppy) it is very distracting in a tense
> scene where a camera pan becomes 5-6 separate ones rather than one smooth
> one.
>
> media ~ # hdparm -I /dev/hdc
>
> /dev/hdc:
>
> ATAPI CD-ROM, with removable media
> Model Number: PIONEER DVD-RW DVR-105
> Serial Number: CADL102310WL
> Firmware Revision: 1.33
> Standards:
> Likely used CD-ROM ATAPI-1
> Configuration:
> DRQ response: 50us.
> Packet size: 12 bytes
> Capabilities:
> LBA, IORDY(can be disabled)
> Buffer size: 64.0kB
> DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2
> Cycle time: min=120ns recommended=120ns
> PIO: pio0 pio1 pio2 pio3 pio4
> Cycle time: no flow control=240ns IORDY flow control=120ns
> Commands/features:
> Enabled Supported:
> * Power Management feature set
> * PACKET command feature set
> * DEVICE_RESET command
> HW reset results:
> CBLID- above Vih
> Device num = 0 determined by the jumper
>
> Cheers
>
I've had some DVR-106DB which were veeerrry picky about media, special
rewritables where almost unusable, abandoned them.
Mine does:
ATAPI CD-ROM, with removable media
Model Number: _NEC DVD_RW ND-3550A
Serial Number:
Firmware Revision: 1.05
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 3ms.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(cannot be disabled)
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
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