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Video stutter on high bitrate


cyberd

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Hello all,

 

Sorry if this is in the wrong section there is no 4.5 issue forum.

 

I have been using UNRAID 4.5.3 (upgrading soon) for awhile now and never had a problem with playing video files over the network until I started with large files.

 

The file I am trying to play is

34gb

Video: MPEG4 Video (H264) 1920x1080 23.98fps [Video]

Audio: DTS 48000Hz 6ch [Audio]

Subtitle: UTF-8 [subtitle]

 

When playing the file locally the computer uses <10% CPU usage and plays flawlessly so I know it's not the computer.  It will also play fine when streaming from another computer on the network.

 

The entire network is GB speed and when copying from the UNRAID server I receive  48MB/sec transfer rates and see ~50% network utilization on my PC.  The UNRAID server sits at 4.7%  usr and 22.5% sys CPU utilization.

 

When I attempt to play the file while on the unraid server I only see 2-3% network utilization CPU usage stays the same however the movie is unwatachable.

 

Eth0 settings

Settings for eth0:

        Supported ports: [ TP MII ]

        Supported link modes:  10baseT/Half 10baseT/Full

                                100baseT/Half 100baseT/Full

                                1000baseT/Half 1000baseT/Full

        Supports auto-negotiation: Yes

        Advertised link modes:  10baseT/Half 10baseT/Full

                                100baseT/Half 100baseT/Full

                                1000baseT/Half 1000baseT/Full

        Advertised auto-negotiation: Yes

        Speed: 1000Mb/s

        Duplex: Full

        Port: MII

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: on

        Supports Wake-on: pumbg

        Wake-on: g

        Current message level: 0x00000033 (51)

        Link detected: yes

 

Is there anyway to pinpoint what the issue is? 

 

Any help is greatly appreicated!!!

 

 

syslog.txt

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You have a few instances of this one:

 

May 17 17:41:01 Tower kernel: ata4.00: exception Emask 0x50 SAct 0x1 SErr 0x680900 action 0x6 frozen

May 17 17:41:01 Tower kernel: ata4.00: irq_stat 0x08000000, interface fatal error

May 17 17:41:01 Tower kernel: ata4: SError: { UnrecovData HostInt 10B8B BadCRC Handshk }

May 17 17:41:01 Tower kernel: ata4.00: failed command: READ FPDMA QUEUED

May 17 17:41:01 Tower kernel: ata4.00: cmd 60/08:00:00:00:00/00:00:00:00:00/40 tag 0 ncq 4096 in

May 17 17:41:01 Tower kernel:          res 40/00:04:00:00:00/00:00:00:00:00/40 Emask 0x50 (ATA bus error)

May 17 17:41:01 Tower kernel: ata4.00: status: { DRDY }

May 17 17:41:01 Tower kernel: ata4: hard resetting link

 

it could be a bad cable or something else.

 

 

 

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Hi,

 

Thanks for the suggestion I will look into this one, one would think that it would cause more issues than just with streaming as everything else works fine.

 

You have a few instances of this one:

 

May 17 17:41:01 Tower kernel: ata4.00: exception Emask 0x50 SAct 0x1 SErr 0x680900 action 0x6 frozen

May 17 17:41:01 Tower kernel: ata4.00: irq_stat 0x08000000, interface fatal error

May 17 17:41:01 Tower kernel: ata4: SError: { UnrecovData HostInt 10B8B BadCRC Handshk }

May 17 17:41:01 Tower kernel: ata4.00: failed command: READ FPDMA QUEUED

May 17 17:41:01 Tower kernel: ata4.00: cmd 60/08:00:00:00:00/00:00:00:00:00/40 tag 0 ncq 4096 in

May 17 17:41:01 Tower kernel:          res 40/00:04:00:00:00/00:00:00:00:00/40 Emask 0x50 (ATA bus error)

May 17 17:41:01 Tower kernel: ata4.00: status: { DRDY }

May 17 17:41:01 Tower kernel: ata4: hard resetting link

 

it could be a bad cable or something else.

 

 

 

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The term stutter gets me a little confused.

 

Does it apply to boith audio or video or both?

 

I have seen a situation where the player skips forward a few seconds after logging an error.  I have also seen a situation where the video appears jerky as opposed to smooth and the speech is not smooth but close to what would call a hesitation not a stutter since a stutter normally involves repetition not skipping.

 

I am just trying to understand what people are referring to.

 

By the way the above was with two different players.

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