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FPS and resolution to low with BT878 capture card.
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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 FPS and resolution to low with BT878 capture card. Hello everybody,
I am new in this forum, and it's my first post for asking help , i hope i will
write all the necessary for, you will be able to help me.
My System
OSVER: Ubuntu Server 9.04
Kernel : 2.6.28-18-server
ZMVER: ZoneMinder 1.24.2
RAM: 1GB DDR2
2 DEVICE: : Conexant Ship (4 Channel each and 30fps each ) with 8 analogs cams.
One is attach to the mother board and the other is a PCI card.
My dmesg information :
 | | | | Code: Linux video capture interface: v2.00
[ 7.262857] bttv: driver version 0.9.17 loaded
[ 7.262861] bttv: using 8 buffers with 2080k (520 pages) each for capture
[ 7.262928] bttv: Bt8xx card found (0).
[ 7.262946] bttv 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 7.262960] bttv0: Bt878 (rev 17) at 0000:02:00.0, irq: 16, latency: 16, mmio: 0xfdbff000
[ 7.263759] bttv0: using: *** UNKNOWN/GENERIC *** [card=0,autodetected]
[ 7.263796] bttv0: gpio: en=00000000, out=00000000 in=00ff9fff [init]
[ 7.264587] tveeprom 0-0050: Huh, no eeprom present (err=-6)?
[ 7.264590] bttv0: tuner type unset
[ 7.264593] bttv0: i2c: checking for MSP34xx @ 0x80... not found
[ 7.265261] bttv0: i2c: checking for TDA9875 @ 0xb0... not found
[ 7.265926] bttv0: i2c: checking for TDA7432 @ 0x8a... not found
[ 7.266658] bttv0: registered device video0
[ 7.266687] bttv0: registered device vbi0
[ 7.266735] bttv: Bt8xx card found (1).
[ 7.266749] bttv 0000:02:04.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 7.266761] bttv1: Bt878 (rev 17) at 0000:02:04.0, irq: 16, latency: 16, mmio: 0xfdbfd000
[ 7.266829] bttv1: using: *** UNKNOWN/GENERIC *** [card=0,autodetected]
[ 7.266856] bttv1: gpio: en=00000000, out=00000000 in=00ff95ff [init]
[ 7.267614] tveeprom 1-0050: Huh, no eeprom present (err=-6)?
[ 7.267617] bttv1: tuner type unset
[ 7.267619] bttv1: i2c: checking for MSP34xx @ 0x80... not found
[ 7.268284] bttv1: i2c: checking for TDA9875 @ 0xb0... not found
[ 7.268951] bttv1: i2c: checking for TDA7432 @ 0x8a... not found
[ 7.269668] bttv1: registered device video1
[ 7.269698] bttv1: registered device vbi1
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My lspci -v info : | | | | Code: 02:00.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) Flags: bus master, medium devsel, latency 16, IRQ 16 Memory at fdbff000 (32-bit, prefetchable) [size=4K] Capabilities: <access> Kernel driver in use: bttv Kernel modules: bttv 02:00.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) Flags: bus master, medium devsel, latency 4, IRQ 11 Memory at fdbfe000 (32-bit, prefetchable) [size=4K] Capabilities: <access> 02:04.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) Flags: bus master, medium devsel, latency 16, IRQ 16 Memory at fdbfd000 (32-bit, prefetchable) [size=4K] Capabilities: <access> Kernel driver in use: bttv Kernel modules: bttv 02:04.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) Flags: bus master, medium devsel, latency 4, IRQ 11 Memory at fdbfc000 (32-bit, prefetchable) [size=4K] Capabilities: <access> | | | | |
My Memory : My Interrupts My ipcs -l : My memory settings . my zmu -U xxxxx-Pxxxxx -d video0 -q -v | | | | Code: Video Device: video0
General Capabilities
Driver: bttv
Card: BT878 video ( *** UNKNOWN/GENER
Bus: PCI:0000:02:00.0
Version: 0.9.17
Type: 0x5010015
Supports video capture (X)
Does not support video output
Supports frame buffer overlay
Supports VBI capture
Does not support VBI output
Does not support sliced VBI capture
Does not support sliced VBI output
Does not support video output overlay
Has tuner
Does not have audio in and/or out
Does not have radio
Supports read/write i/o (X)
Does not support async i/o
Supports streaming i/o (X)
Standards:
NTSC
NTSC-M
NTSC-M-JP
NTSC-M-KR
PAL
PAL-BG
PAL-H
PAL-I
PAL-DK
PAL-M
PAL-N
PAL-Nc
PAL-60
SECAM
SECAM-B
SECAM-G
SECAM-H
SECAM-DK
SECAM-L
SECAM-Lc
Formats:
8 bpp, gray (GREY)
8 bpp, dithered color (HI24)
15 bpp RGB, le (RGBO)
15 bpp RGB, be (RGBQ)
16 bpp RGB, le (RGBP)
16 bpp RGB, be (RGBR)
24 bpp RGB, le (BGR3)
32 bpp RGB, le (BGR4)
32 bpp RGB, be (RGB4)
4:2:2, packed, YUYV (YUYV)
4:2:2, packed, YUYV (YUYV)
4:2:2, packed, UYVY (UYVY)
4:2:2, planar, Y-Cb-Cr (422P)
4:2:0, planar, Y-Cb-Cr (YU12)
4:2:0, planar, Y-Cr-Cb (YV12)
4:1:1, planar, Y-Cb-Cr (411P)
4:1:0, planar, Y-Cb-Cr (YUV9)
4:1:0, planar, Y-Cr-Cb (YVU9)
Crop Capabilities
Bounds: 838 x 504
Default: 768 x 480
Current: 768 x 480 | | | | |
my zmu -U xxxxx-Pxxxxx -d video1 -q -v | | | | Code: Video Device: video1
General Capabilities
Driver: bttv
Card: BT878 video ( *** UNKNOWN/GENER
Bus: PCI:0000:02:04.0
Version: 0.9.17
Type: 0x5010015
Supports video capture (X)
Does not support video output
Supports frame buffer overlay
Supports VBI capture
Does not support VBI output
Does not support sliced VBI capture
Does not support sliced VBI output
Does not support video output overlay
Has tuner
Does not have audio in and/or out
Does not have radio
Supports read/write i/o (X)
Does not support async i/o
Supports streaming i/o (X)
Standards:
NTSC
NTSC-M
NTSC-M-JP
NTSC-M-KR
PAL
PAL-BG
PAL-H
PAL-I
PAL-DK
PAL-M
PAL-N
PAL-Nc
PAL-60
SECAM
SECAM-B
SECAM-G
SECAM-H
SECAM-DK
SECAM-L
SECAM-Lc
Formats:
8 bpp, gray (GREY)
8 bpp, dithered color (HI24)
15 bpp RGB, le (RGBO)
15 bpp RGB, be (RGBQ)
16 bpp RGB, le (RGBP)
16 bpp RGB, be (RGBR)
24 bpp RGB, le (BGR3)
32 bpp RGB, le (BGR4)
32 bpp RGB, be (RGB4)
4:2:2, packed, YUYV (YUYV)
4:2:2, packed, YUYV (YUYV)
4:2:2, packed, UYVY (UYVY)
4:2:2, planar, Y-Cb-Cr (422P)
4:2:0, planar, Y-Cb-Cr (YU12)
4:2:0, planar, Y-Cr-Cb (YV12)
4:1:1, planar, Y-Cb-Cr (411P)
4:1:0, planar, Y-Cb-Cr (YUV9)
4:1:0, planar, Y-Cr-Cb (YVU9)
Crop Capabilities
Bounds: 838 x 504
Default: 768 x 480
Current: 768 x 480 | | | | |
It's weird because i can only have a color image, setting the capture palette to BGR24 !!!! I use also NTSC M and Video for Linux version 2, for each of my 8 analog cams MY PROBLEMS 1/ I am only be able to capture at : 320x240 if i increase the size i have black image. 2/I was problems adding monitor because when in configure them the channels where interlaced !! with my 1rst device this problem disapear disabling the V4L_MULTI_BUFFER but with my second device is the same. I don´t know if i need to configure In /etc/modprobe.conf
Because i don´t understant this configuration?
3 /I put maximum FPS to 7fps (30fps / 4 = 7.5fps)
But in monitor mode i can only see 3fps for each camera. Why?
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| Wed Feb 24, 2010 5:53 pm |
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mastertheknife
Joined: Wed Dec 16, 2009 5:32 pm
Posts: 553
Location: Israel
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If you are using PAL cameras, anything above 384x288 will be interlaced, and if you are using NTSC cameras, anything above 320x240 will be interlaced, thats just how PAL and NTSC work. TVs have built in deinterlacing which is why you never see interlacing there.
Your card is probably a pico2000 clone, like here:
http://www.zoneminder.com/wiki/index.php/Pico2000
This card has a single bt878 chip, so it can only capture at 29.97 fps for NTSC and 25 fps for PAL. 2-3 fps with 4 inputs is typical because switching inputs takes some time!
For real time capturing you need to use only 1 input, then you will get the full 25 fps(PAL)/29.97 fps(NTSC)
If you want real time capturing of 8 cameras, you need 8 bt878 chips.
I recommend getting a Kodicom 8800 clone, they are cheap on ebay (around $60 including shipping).
I use this card (with heatsinks installed), and use the Pico2000 as a backup card.
More info:
http://www.zoneminder.com/wiki/index.php/Kodicom_8800
http://www.zoneminder.com/forums/viewtopic.php?t=15269 (scroll down to my post)
mastertheknife.
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| Wed Feb 24, 2010 7:01 pm |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Thanks for your response.
I don´t understand why only 3fps and not 7fps almost 30/4cams = 7.5fps...
You think thaht i Can i increase the Size and have a good image?
And i need to put the lines in the modprobe to have better result?
Thank you very much for your help
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| Wed Feb 24, 2010 7:43 pm |
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mastertheknife
Joined: Wed Dec 16, 2009 5:32 pm
Posts: 553
Location: Israel
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3fps because switching between inputs also takes some time.
If you want real time (25 fps for PAL, 29.97 for NTSC) you need a real time card, such as the Kodicom 8800 i suggested above.
Increase size, I wouldn't because then image will be interlaced and capturing motion wont be good. Stick to 384x288 for PAL and 320x240 for NTSC for best results.
Put lines in modprobe? Technically you should, but if you are having no problems right now i'm not sure its needed.
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| Thu Feb 25, 2010 8:52 pm |
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cordel
Joined: Fri Mar 05, 2004 5:47 pm
Posts: 5218
Location: /USA/Washington/Seattle
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Setting the driver correctly might certainly help. You might have to experiment a bit if you don't know the specific card/model but most single chip devices work with card=77 if it's a bt878 but that is a SWAG value that might not help but can't hurt to try. Since ZM needs to lean on the bttv driver to communicate with, and grab an image from the card, it's a pretty important setting.
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| Thu Feb 25, 2010 10:22 pm |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Thank you very much for the advices.
i will try the modprobe.conf
Could you give me some links to read the theory of the CCTV systems to understand better Zoneminder.
Thanks
Best regards
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| Fri Feb 26, 2010 4:29 am |
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cordel
Joined: Fri Mar 05, 2004 5:47 pm
Posts: 5218
Location: /USA/Washington/Seattle
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I don't have any links per say but cctv (closed circuit television) is standards based typically on NTSC and PAL formats.
http://en.wikipedia.org/wiki/Closed-circuit_television
http://en.wikipedia.org/wiki/NTSC
http://en.wikipedia.org/wiki/PAL
http://en.wikipedia.org/wiki/Interlace
These should get you started and give you enough to google for anything to fill in the gaps.
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| Fri Feb 26, 2010 6:19 am |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Thank you very much , i will read this immediately.
I test this for my 2 cards
The result was very good and the camera that i had an image in black is in color right know , but after 1 day of test i still having one channel blinking and in the botom of the image i see sometimes an other camera. After my reset i see this in the dmesg : | | | | Quote: [ 7.044527] Linux video capture interface: v2.00
[ 7.061481] bttv: driver version 0.9.17 loaded
[ 7.061485] bttv: using 8 buffers with 2080k (520 pages) each for capture
[ 7.061551] bttv: Bt8xx card found (0).
[ 7.061570] bttv 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 7.061583] bttv0: Bt878 (rev 17) at 0000:02:00.0, irq: 16, latency: 16, mmio: 0xfdbff000
[ 7.062372] bttv0: using: GrandTec Multi Capture Card (Bt878) [card=77,insmod option]
[ 7.062410] bttv0: gpio: en=00000000, out=00000000 in=00ff9fff [init]
[ 7.062473] bttv0: tuner absent
[ 7.062537] bttv0: registered device video0
[ 7.062565] bttv0: registered device vbi0
[ 7.062591] bttv0: PLL: 28636363 => 35468950 .. ok
[ 7.102503] bttv: Bt8xx card found (1).
[ 7.102522] bttv 0000:02:04.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 7.102542] bttv1: Bt878 (rev 17) at 0000:02:04.0, irq: 16, latency: 16, mmio: 0xfdbfd000
[ 7.102574] bttv1: using: GrandTec Multi Capture Card (Bt878) [card=77,insmod option]
[ 7.102605] bttv1: gpio: en=00000000, out=00000000 in=00ff91ff [init]
[ 7.102670] bttv1: tuner absent
[ 7.102731] bttv1: registered device video1
[ 7.102758] bttv1: registered device vbi1
[ 7.102787] bttv1: PLL: 28636363 => 35468950 .. ok
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Do you have some ideas of waths going wrong?
BEst regards
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| Fri Feb 26, 2010 7:06 pm |
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bb99
Joined: Wed Apr 02, 2008 1:04 am
Posts: 833
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Can't tell you what's wrong but I can tell you how it started and how to fix it (from my experience). The monitor you are having problems with was inadvertently assigned the same video device path/channel as the one that's showing up as interference. To fix: change the video device path on the source tab to some value that doesn't exist such as video7(0) and save. Now change it back to the values you want to work.
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| Fri Feb 26, 2010 11:44 pm |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Thank you , i will test this tomorrow morning.
Best regards
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| Sat Feb 27, 2010 3:56 am |
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beerygaz
Joined: Wed Jul 08, 2009 10:43 am
Posts: 28
Location: Johannesburg, South Africa
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I've read this and other threads with much interest.
I understand interlacing and that ZM des not have the ability to display display or record interlaced images correctly. Also, I understand that I will get a 'combing' effect on interlaced images with movement in then,
That said, I still don't understand that my cameras (Sony 1/3" CCD cheap units) specs say they support 420 TV lines. If NTSC is only 240 horizontal lines, my faulty logic suggests I'm losing nearly 90% of my potenital resolution. How do I get an image that is better quality and takes advantage of these supposed 420 lines (instead of NTSC's 240)
If this is just impossible and the 420 lines spec is just marketing rubbish, my next questions is: How do I get a better resolution images without making the jump to $500+ megapixel IP camera. Is there something in between?
Am I limited, not so much by the camreea, but by the bt8xx chipset on my Kodicom card?
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| Mon Mar 01, 2010 1:00 pm |
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jameswilson
Joined: Wed Jun 08, 2005 9:07 pm
Posts: 5078
Location: Midlands UK
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yes its teh card.
You can capture at full ntsc ress (640x480 i think) but if you do that you will get the combing effect.
One way around this is to use progressive scan cameras. They do exist but are not cheap.
this is why most people are advising you to limit to 240 vertical resolution.
_________________James Wilson
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
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| Mon Mar 01, 2010 2:24 pm |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Hello, i continue with my problems of instability images and i perform the advice from BB99 and know i have video(0)/3 OK and my video(0)0 with blinking from one camera to another each 2 seconds.... I really don' t understand.
I don't see any error in the logs.... with debug 4.
Wath can i do ?
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| Mon Mar 01, 2010 5:58 pm |
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jameswilson
Joined: Wed Jun 08, 2005 9:07 pm
Posts: 5078
Location: Midlands UK
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have you got both cams set up exactly the same, ie res, pallete etc?
also have you modified any other config settings regarding frame grab ie
CAPTURES_PER_FRAME?
_________________James Wilson
Disclaimer: The above is pure theory and may work on a good day with the wind behind it. etc etc.
http://www.securitywarehouse.co.uk
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| Mon Mar 01, 2010 6:04 pm |
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danisam
Joined: Mon Oct 19, 2009 6:07 pm
Posts: 24
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Ok i found it ...
Firstly it was all my monitors very blinking between them and i uncheck the
V4L_MULTI_BUFFER option , and it' s was better.
And i forgot to test with the option CAPTURES_PER_FRAME i put this option to 2 and all my problems disapear.
thanks you very much for your
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| Tue Mar 02, 2010 12:21 am |
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