LinuxQuestions.org - Video acquisition problem

Hi everyone,

This message because we are trying ton install a telepresence system between Geneva and Montreal for a show called GOD IS A DJ.

As our first experience on a Linux system, we have installed Scenic 0.6.3 on our Ubuntu 11.04 and did all the installation commands in the terminal, as written in the installation guide.

We have bought a video capture card Hauppauge BT878, with 3 composite in and 1 S-video in.
The module to run the card is bttv, we configured it and it seems to work properly.

Our problem is the following:

The capture signal is perfect in acquisition programs like TVTIME or KINO but is horizontally doubled and stretched in streaming programs like SCENIC, MILHOUSE, GST-LAUNCH and CHEESE.
The input we use is a composite PAL, 4:3, native 640x480.

Would you have any idea in which direction we have to search to solve this signal distortion problem?

Here you can fin our lspci report:

00:00.0 Host bridge: Intel Corporation 82X38/X48 Express DRAM Controller (rev 01)

00:01.0 PCI bridge: Intel Corporation 82X38/X48 Express Host-Primary PCI Express Bridge (rev 01)

00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)

00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)

00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)

00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)

00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)

00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02)

00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)

00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)

00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)

00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)

00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02)

00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4 port SATA IDE Controller (rev 02)

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)

00:1f.5 IDE interface: Intel Corporation 82801I (ICH9 Family) 2 port SATA IDE Controller (rev 02)

01:00.0 VGA compatible controller: ATI Technologies Inc RV770 [Radeon HD 4870]

01:00.1 Audio device: ATI Technologies Inc HD48x0 audio

02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12)

03:00.0 SATA controller: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03)

03:00.1 IDE interface: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03)

05:01.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)

05:01.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)

05:03.0 FireWire (IEEE 1394): Agere Systems FW322/323 (rev 70)

05:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC Gigabit Ethernet (rev 10)

Here you can fin our lsmod report:

Module Size Used by

vivi 19224 0

videobuf_vmalloc 13589 1 vivi

binfmt_misc 17565 1

parport_pc 36959 0

ppdev 17113 0

vesafb 13761 1

snd_hda_codec_hdmi 28103 1

snd_hda_codec_analog 98042 1

firewire_ohci 40370 0

firewire_core 62646 1 firewire_ohci

snd_hda_intel 33211 1

snd_hda_codec 103804 3 snd_hda_codec_hdmi,snd_hda_codec_analog,snd_hda_intel

snd_hwdep 13604 1 snd_hda_codec

snd_seq_midi 13324 0

snd_rawmidi 30486 1 snd_seq_midi

snd_seq_midi_event 14899 1 snd_seq_midi

snd_seq 61621 2 snd_seq_midi,snd_seq_midi_event

snd_bt87x 19128 1

snd_pcm 96625 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_bt87x

usbhid 46956 0

snd_seq_device 14462 3 snd_seq_midi,snd_rawmidi,snd_seq

ir_lirc_codec 12898 0

lirc_dev 19232 1 ir_lirc_codec

ir_sony_decoder 12549 0

ir_jvc_decoder 12546 0

ir_rc6_decoder 12546 0

fglrx 2739144 149

snd_timer 29602 2 snd_seq,snd_pcm

asus_atk0110 17976 0

bttv 128715 0

i2c_algo_bit 13400 1 bttv

snd 67382 15 snd_hda_codec_hdmi,snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_rawmidi,snd_bt87x, snd_seq,snd_pcm,snd_seq_device,snd_timer

v4l2_common 17647 2 vivi,bttv

videodev 82052 3 vivi,bttv,v4l2_common

v4l2_compat_ioctl32 17078 1 videodev

videobuf_dma_sg 19307 1 bttv

ir_rc5_decoder 12546 0

x38_edac 13128 0

ir_nec_decoder 12546 0

videobuf_core 26135 4 vivi,videobuf_vmalloc,bttv,videobuf_dma_sg

serio_raw 13166 0

btcx_risc 13640 1 bttv

rc_core 26918 7 ir_lirc_codec,ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,bttv,ir_rc5_decoder,ir_nec_decoder

tveeprom 21249 1 bttv

edac_core 53845 2 x38_edac

soundcore 12680 1 snd

snd_page_alloc 18529 3 snd_hda_intel,snd_bt87x,snd_pcm

lp 17825 0

parport 46458 3 parport_pc,ppdev,lp

hid 91020 1 usbhid

floppy 74120 0

ahci 25951 0

r8169 48022 0

crc_itu_t 12707 1 firewire_core

libahci 26642 1 ahci

pata_jmicron 12747 0

sky2 58509 0