weeding out v4l ver 1 stuff

DISCUSSION Carl Karsten 11 participants 20 messages Nov 6, 2008 – Nov 15, 2008 1 message not in the archive Media (V4L/DVB)

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Carl Karsten

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2008-11-06 19:08 UTC #0 lore raw

Given v4l version 1 is being dropped in December 08, we should remove stuff that targets that api, right?

For instance:

http://linuxtv.org/hg/v4l-dvb/file/b45ffc93fb82/v4l2-apps/test/v4lgrab.c

      94 #ifdef CONFIG_VIDEO_V4L1_COMPAT
      194 #else

      195 	fprintf(stderr, "V4L1 API is not configured!\n");

I'll let someone else figure out if the whole file should be removed, or if it has some value to v2.

And assuming someone agrees we should week out v1 stuff, where is the right place to log this too? http://bugzilla.kernel.org does not seem right.

Carl K

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David Ellingsworth

2008-11-06 23:57 UTC #1 lore raw

Quoted 12 lines · Carl Karsten

Given v4l version 1 is being dropped in December 08, we should remove stuff that targets that api, right?
For instance:
http://linuxtv.org/hg/v4l-dvb/file/b45ffc93fb82/v4l2-apps/test/v4lgrab.c
     94 #ifdef CONFIG_VIDEO_V4L1_COMPAT
     194 #else

     195       fprintf(stderr, "V4L1 API is not configured!\n");

Quoted 8 lines

I'll let someone else figure out if the whole file should be removed, or if it has some value to v2.
And assuming someone agrees we should week out v1 stuff, where is the right place to log this too? http://bugzilla.kernel.org does not seem right.
Carl K

With v4l1 going away, it would be nice to convert any drivers still using the v4l1 interface to v4l2. Drivers using usbvideo spring to mind. I've mentioned in the past, I've started a rewrite of ibmcam over to the v4l2 interface but I currently don't have much time to work on it and could use some assistance from the community. While Mauro suggested it be written against the gspca framework, I hesitate to do so since gspca does it's own memory management and will probably become somewhat obsolete once the new media framework is put together. If anyone is interested in helping, I'll happily set up a public git repository for contributions.

Regards,

David Ellingsworth

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Hans de Goede

2008-11-07 07:06 UTC #2 lore raw

Quoted 22 lines · David Ellingsworth

Quoted 12 lines · Carl Karsten
Given v4l version 1 is being dropped in December 08, we should remove stuff that targets that api, right?
For instance:
http://linuxtv.org/hg/v4l-dvb/file/b45ffc93fb82/v4l2-apps/test/v4lgrab.c
     94 #ifdef CONFIG_VIDEO_V4L1_COMPAT
     194 #else

     195       fprintf(stderr, "V4L1 API is not configured!\n");
Quoted 8 lines
I'll let someone else figure out if the whole file should be removed, or if it has some value to v2.
And assuming someone agrees we should week out v1 stuff, where is the right place to log this too? http://bugzilla.kernel.org does not seem right.
Carl K

Quoted 8 lines

With v4l1 going away, it would be nice to convert any drivers still using the v4l1 interface to v4l2. Drivers using usbvideo spring to mind. I've mentioned in the past, I've started a rewrite of ibmcam over to the v4l2 interface but I currently don't have much time to work on it and could use some assistance from the community. While Mauro suggested it be written against the gspca framework, I hesitate to do so since gspca does it's own memory management and will probably become somewhat obsolete once the new media framework is put together.

? What new media framework ? You mean the planned changes to the v4l2 API for multifunction devices? Anyways this won't make gspca obsolete, gspca is a framework for writing usb webcam drivers, as such it tries to do things common to all usb webcam drivers inside the gspca-core. If the v4l2 core changes the gspca-core will adapt and in most cases of v4l2-core changes, the gspca subdrivers will not need to change at all. So if anything using gspca makes your driver more future proof against v4l2-core changes as in most cases the necessary changes for all gspca drivers only need to be made once in gspca-core

Regards,

Hans

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Hans Verkuil

2008-11-07 09:51 UTC #3 lore raw

Quoted 2 lines · On Friday 07 November 2008 08:10:19 Hans de Goede wrote:

Quoted 1 line · David Ellingsworth
On Thu, Nov 6, 2008 at 1:39 PM, Carl Karsten

Quoted 32 lines · <[email protected]> wrote:

Quoted 22 lines
Quoted 13 lines
Given v4l version 1 is being dropped in December 08, we should remove stuff that targets that api, right?
For instance:
http://linuxtv.org/hg/v4l-dvb/file/b45ffc93fb82/v4l2-apps/test/v4l
grab.c
     94 #ifdef CONFIG_VIDEO_V4L1_COMPAT
     194 #else

     195       fprintf(stderr, "V4L1 API is not configured!\n");
Quoted 8 lines
I'll let someone else figure out if the whole file should be removed, or if it has some value to v2.
And assuming someone agrees we should week out v1 stuff, where is the right place to log this too? http://bugzilla.kernel.org does not seem right.
Carl K
Quoted 9 lines
With v4l1 going away, it would be nice to convert any drivers still using the v4l1 interface to v4l2. Drivers using usbvideo spring to mind. I've mentioned in the past, I've started a rewrite of ibmcam over to the v4l2 interface but I currently don't have much time to work on it and could use some assistance from the community. While Mauro suggested it be written against the gspca framework, I hesitate to do so since gspca does it's own memory management and will probably become somewhat obsolete once the new media framework is put together.

Quoted 10 lines

? What new media framework ? You mean the planned changes to the v4l2 API for multifunction devices? Anyways this won't make gspca obsolete, gspca is a framework for writing usb webcam drivers, as such it tries to do things common to all usb webcam drivers inside the gspca-core. If the v4l2 core changes the gspca-core will adapt and in most cases of v4l2-core changes, the gspca subdrivers will not need to change at all. So if anything using gspca makes your driver more future proof against v4l2-core changes as in most cases the necessary changes for all gspca drivers only need to be made once in gspca-core

That's right. If possible, then I definitely recommend moving away from separate webcam drivers to gspca where possible. The planned new v4l2 core framework enhancements have nothing to do with this.

Regards,

Hans

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Antonio Ospite

2008-11-07 15:20 UTC #4 lore raw

Quoted 13 lines · On Fri, 7 Nov 2008 10:50:25 +0100 Hans Verkuil <[email protected]> wrote:

Quoted 11 lines · On Friday 07 November 2008 08:10:19 Hans de Goede wrote:
? What new media framework ? You mean the planned changes to the v4l2 API for multifunction devices? Anyways this won't make gspca obsolete, gspca is a framework for writing usb webcam drivers, as such it tries to do things common to all usb webcam drivers inside the gspca-core. If the v4l2 core changes the gspca-core will adapt and in most cases of v4l2-core changes, the gspca subdrivers will not need to change at all. So if anything using gspca makes your driver more future proof against v4l2-core changes as in most cases the necessary changes for all gspca drivers only need to be made once in gspca-core

Quoted 4 lines

That's right. If possible, then I definitely recommend moving away from separate webcam drivers to gspca where possible. The planned new v4l2 core framework enhancements have nothing to do with this.

Hi, maybe the gspca framework should be better advertised, the only doc I could find in linux is in Documentation/video4linux/gspca.txt which doesn't clearly present gspca as a _generic_ framework for usb cameras, although one can still infer that information seeing that it supports different bridges and sensors, restating it could only be good.

Regards,
Antonio Ospite

Signature · 7 lines

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Keith Lawson

2008-11-07 19:26 UTC #5 lore raw

USB Capture device

Hello,

Can anyone suggest a good USB catpure device that has S-Video input and a stable kernel driver? I've been playing with this device:

http://www.diamondmm.com/VC500.php

using the development drivers from http://linuxtv.org/hg/~mchehab/tm6010/ but I haven't had any luck with S-Video (only composite).

Can anyone suggest a device with stable drivers in 2.6.27.5?

Thanks, Keith.

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Mauro Carvalho Chehab

2008-11-07 20:44 UTC #19 lore raw

In reply to David Ellingsworth

Hi David,

Quoted 10 lines · On Thu, 6 Nov 2008 18:53:42 -0500 "David Ellingsworth"…

With v4l1 going away, it would be nice to convert any drivers still using the v4l1 interface to v4l2. Drivers using usbvideo spring to mind. I've mentioned in the past, I've started a rewrite of ibmcam over to the v4l2 interface but I currently don't have much time to work on it and could use some assistance from the community. While Mauro suggested it be written against the gspca framework, I hesitate to do so since gspca does it's own memory management and will probably become somewhat obsolete once the new media framework is put together. If anyone is interested in helping, I'll happily set up a public git repository for contributions.

In general, sharing common code is a good idea. That's why I think it would be better if you use gspca as the basis for your driver. That's also why I think it would be better for gspca to use videobuf.

Reusing existing core components generally means less compatibility issues with userspace apps. As you know, most of the webcam troubles we're currently facing are related to some app developed for webcam A (or tv board A), that doesn't work well if you use webcam B.

I think if all drivers would use the same memory management and core stuff, and if we improve the core stuf more, those problems would disappear.

Yet, I prefer to commit a driver that doesn't share the common code, but adds support for newer stuff and are compliant with V4L2 API than not supporting that hardware at all.

Cheers,
Mauro

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Mauro Carvalho Chehab

2008-11-07 20:45 UTC #20 lore raw

In reply to Carl Karsten

Quoted 2 lines · On Thu, 06 Nov 2008 12:39:21 -0600 Carl Karsten <[email protected]> wrote:

Given v4l version 1 is being dropped in December 08, we should remove stuff that targets that api, right?

Yes, but we should first convert the existing V4L1 drivers. We're currently needing volunteers.

Cheers,
Mauro

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Keith Lawson

2008-11-13 11:57 UTC #6 lore raw

Re: USB Capture device

In reply to Keith Lawson

Hello,

I've been on this list for a while now and have noticed that it's pretty well strictly developer related. Most user questions about supported devices seem to go unanswered. Is there a better forum for users to ask questions about Linux support for video devices?

I didn't catch the final descision on splitting the mailing list. Is a video4linux-users list coming?

Thanks,
Keith.

Quoted 8 lines · Keith Lawson

Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from http://linuxtv.org/hg/~mchehab/tm6010/ but I haven't had any luck with S-Video (only composite).

Quoted 9 lines

Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Markus Rechberger

2008-11-13 12:41 UTC #7 lore raw

Re: USB Capture device

Quoted 10 lines · Keith Lawson

Hello,
I've been on this list for a while now and have noticed that it's pretty well strictly developer related. Most user questions about supported devices seem to go unanswered. Is there a better forum for users to ask questions about Linux support for video devices?
I didn't catch the final descision on splitting the mailing list. Is a video4linux-users list coming?

are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.

http://mcentral.de/wiki/index.php5/Em2880#Devices

br,
Markus

Quoted 25 lines

Thanks,
Keith.
Quoted 10 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Quoted 9 lines
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Quoted 5 lines

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Keith Lawson

2008-11-14 15:38 UTC #8 lore raw

Re: USB Capture device

On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>

Quoted 4 lines

are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices

It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.

Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).

Quoted 35 lines

br,
Markus
Quoted 30 lines
Thanks,
Keith.
Quoted 10 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Quoted 9 lines
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Markus Rechberger

2008-11-14 15:51 UTC #9 lore raw

Re: USB Capture device

Quoted 10 lines · Keith Lawson

On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices

Quoted 8 lines

It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).

I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.

br,
Markus

Quoted 40 lines

Quoted 39 lines
br,
Markus
Quoted 34 lines
Thanks,
Keith.
Quoted 14 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Quoted 8 lines
Thanks, Keith.
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Quoted 5 lines

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Jonathan Lafontaine

2008-11-14 15:57 UTC #10 lore raw

RE : USB Capture device

try the kworld usb ( no audio chip inside and using 2860 chipset, I succes use pal/m which is 525 lines like ntsc....)

theres Pinnacle dazzle dvc 100 a lot available on sites. did not succes use pal/m :(

but ac97 sound support. this is a 2820 chip with saa7113h philips v-decoder
________________________________________
De : [email protected] [[email protected]] de la part de Markus Rechberger [[email protected]] Date d'envoi : 14 novembre 2008 10:50
À : Keith Lawson
Cc : [email protected]
Objet : Re: USB Capture device

Quoted 10 lines · Keith Lawson

On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices

Quoted 8 lines

It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).

br,
Markus

Quoted 40 lines

Quoted 39 lines
br,
Markus
Quoted 34 lines
Thanks,
Keith.
Quoted 14 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Quoted 8 lines
Thanks, Keith.
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Jonathan Lafontaine

2008-11-14 16:49 UTC #11 lore raw

RE : USB Capture device

try the kworld usb ( no audio chip inside and using 2860 chipset, I succes use pal/m which is 525 lines like ntsc....)

theres Pinnacle dazzle dvc 100 a lot available on sites. did not succes use pal/m :(

Quoted 10 lines · Keith Lawson

On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices

Quoted 8 lines

It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).

br,
Markus

Quoted 40 lines

Quoted 39 lines
br,
Markus
Quoted 34 lines
Thanks,
Keith.
Quoted 14 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Quoted 8 lines
Thanks, Keith.
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Jonathan Lafontaine

2008-11-14 19:45 UTC #12 lore raw

MODRPOBE RMMOD

In reply to Markus Rechberger

How to disable a module (em28xx) that is in use and if possible without wait params...

Like on the fly, live!! Without reboot...

-command line solution?

-refind file descriptor and close device with v4l2 ???

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Markus Rechberger
Sent: 14 novembre 2008 10:50
To: Keith Lawson
Cc: [email protected]
Subject: Re: USB Capture device

Quoted 10 lines · Keith Lawson

On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices

Quoted 8 lines

It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).

br,
Markus

Quoted 40 lines

Quoted 39 lines
br,
Markus
Quoted 34 lines
Thanks,
Keith.
Quoted 14 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Quoted 8 lines
Thanks, Keith.
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Ben Klein

2008-11-14 23:18 UTC #15 lore raw

Re: USB Capture device

In reply to a message not in the archive

(oops, forgot to send this to the mailing list)

In general, there is no price advantage with getting a capture device without a tuner. There are at least two reasons for this:

1) Less demand for just a capture device. People want to turn their computers into idiot boxes

2) Most capture-only cards are (probably) TV tuners with the tuner disabled. It's cheaper for them to make that way.

I got a cheap-and-nasty USB em28xx that pretty much *just* works, but it's enough for me. It has a usb-audio device in it which seems to not sync up with the video. The only em28xx card= options that work with it are for cards with tuners (though that doesn't necessarily mean that the card has a tuner).

I also have a PCI K-World Vstream Xpert DVB-T (cx88), which I selected due to it having a good price and analogue capture. Turns out I've used the analogue capture more than the digital reception. :) The analogue capture *looks like* a full TV tuner with the tuner disabled, but I could be wrong about this too.

2008/11/15 Markus Rechberger <[email protected]>

On Fri, Nov 14, 2008 at 4:37 PM, Keith Lawson <[email protected]>

Quoted 72 lines

Quoted 10 lines · wrote:
On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices
Quoted 8 lines
It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).
I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.
br,
Markus
Quoted 4 lines
Quoted 4 lines
br,
Markus
Quoted 8 lines
Quoted 8 lines
Quoted 8 lines
Thanks,
Keith.
Quoted 3 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input
and
Quoted 28 lines
Quoted 20 lines
Quoted 20 lines
Quoted 19 lines
a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/<http://linuxtv.org/hg/%7Emchehab/tm6010/>
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Ben Klein

2008-11-14 23:29 UTC #13 lore raw

Re: MODRPOBE RMMOD

In reply to Jonathan Lafontaine

You can't unload a module if it's in use without forcing it (if your kernel supports this, and if the driver doesn't mind, and if the wind's blowing the right way). But forcing module unloads is a *BAD* idea.

The main reason is that most (all?) hardware devices have some state that they would not be able to recover from if the driver suddenly disappeared. The worst case would be harddrives, where a file would suddenly stop being read or written to, stuffing up both the filesystem and the application at the same time.

Another reason is that applications tend to assume that if it works once it will keep on working while it's needed. Take the example of X; can you imagine what would happen if you started up X and then suddenly your video driver dissappeared from memory? (This is particularly pertinent for the nvidia and ati/amd drivers that have kernel modules.) It's not just X that would explode, but all the applications running under X.

2008/11/15 Jonathan Lafontaine <[email protected]>

Quoted 114 lines

How to disable a module (em28xx) that is in use and if possible without wait params...
Like on the fly, live!! Without reboot...
(quoted diff) +0 -3
-command line solution?
 
-refind file descriptor  and close device with v4l2 ???
 
-----Original Message-----
From: [email protected] [mailto:
[email protected]] On Behalf Of Markus Rechberger
Sent: 14 novembre 2008 10:50
To: Keith Lawson
Cc: [email protected]
Subject: Re: USB Capture device
Quoted 10 lines · Keith Lawson
On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices
Quoted 8 lines
It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).
I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.
br,
Markus
Quoted 4 lines
Quoted 4 lines
br,
Markus
Quoted 8 lines
Quoted 8 lines
Quoted 8 lines
Thanks,
Keith.
Quoted 3 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input
and
Quoted 28 lines
Quoted 20 lines
Quoted 20 lines
Quoted 19 lines
a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/<http://linuxtv.org/hg/%7Emchehab/tm6010/>
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Quoted 5 lines

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hermann pitton

2008-11-15 02:14 UTC #16 lore raw

Re: USB Capture device

In reply to Ben Klein

Hi,

some interesting ideas.

Am Samstag, den 15.11.2008, 10:18 +1100 schrieb Ben Klein:

Quoted 4 lines

(oops, forgot to send this to the mailing list)
In general, there is no price advantage with getting a capture device without a tuner. There are at least two reasons for this:

Major hardware providers still have a fine grained offer.
A capture only device without tuner, radio, remote etc. is still cheapest. I agree, that it might come to a point, given that tuners are becoming cheaper these days, it won't make much sense anymore to provide capture only devices.

But you still pay more for each additional tuner/demod on every card. It is not such remarkable anymore like on the PVR500 in the beginning, but still visible for triple capable devices, because current systems are running out of available PCI slots.

The future fights on the markets will happen on multi tuner PCIe and DVB-S2 capable devices as a next step and DVB-T2 will follow.

Quoted 2 lines

1) Less demand for just a capture device. People want to turn their computers into idiot boxes

That does not make any difference. From an external device you can feed any BS coming from external tuners or anything else too ...

Quoted 2 lines

2) Most capture-only cards are (probably) TV tuners with the tuner disabled. It's cheaper for them to make that way.

That I do seriously doubt for now. Give some examples.

Quoted 11 lines

I got a cheap-and-nasty USB em28xx that pretty much *just* works, but it's enough for me. It has a usb-audio device in it which seems to not sync up with the video. The only em28xx card= options that work with it are for cards with tuners (though that doesn't necessarily mean that the card has a tuner).
I also have a PCI K-World Vstream Xpert DVB-T (cx88), which I selected due to it having a good price and analogue capture. Turns out I've used the analogue capture more than the digital reception. :) The analogue capture *looks like* a full TV tuner with the tuner disabled, but I could be wrong about this too.

Maybe, the analog tuner at least is disabled.

cx88-cards.c.

	[CX88_BOARD_KWORLD_DVB_T] = {
		.name           = "KWorld/VStream XPert DVB-T",
		.tuner_type     = TUNER_ABSENT,
		.radio_type     = UNSET,
		.tuner_addr	= ADDR_UNSET,
		.radio_addr	= ADDR_UNSET,
		.input          = {{
			.type   = CX88_VMUX_COMPOSITE1,
			.vmux   = 1,
			.gpio0  = 0x0700,
			.gpio2  = 0x0101,
		},{
			.type   = CX88_VMUX_SVIDEO,
			.vmux   = 2,
			.gpio0  = 0x0700,
			.gpio2  = 0x0101,
		}},
		.mpeg           = CX88_MPEG_DVB,
	},

cx88-dvb.c.

	case CX88_BOARD_KWORLD_DVB_T:
	case CX88_BOARD_DNTV_LIVE_DVB_T:
	case CX88_BOARD_ADSTECH_DVB_T_PCI:
		fe0->dvb.frontend = dvb_attach(mt352_attach,
					       &dntv_live_dvbt_config,
					       &core->i2c_adap);
		if (fe0->dvb.frontend != NULL) {
			if (!dvb_attach(dvb_pll_attach, fe0->dvb.frontend,
					0x61, NULL, DVB_PLL_UNKNOWN_1))
				goto frontend_detach;
		}
		break;

dvb-pll.c.

static struct dvb_pll_desc dvb_pll_unknown_1 = {
	.name  = "unknown 1", /* used by dntv live dvb-t */
	.min   = 174000000,
	.max   = 862000000,
	.iffreq= 36166667,
	.count = 9,
	.entries = {
		{  150000000, 166667, 0xb4, 0x01 },
		{  173000000, 166667, 0xbc, 0x01 },
		{  250000000, 166667, 0xb4, 0x02 },
		{  400000000, 166667, 0xbc, 0x02 },
		{  420000000, 166667, 0xf4, 0x02 },
		{  470000000, 166667, 0xfc, 0x02 },
		{  600000000, 166667, 0xbc, 0x08 },
		{  730000000, 166667, 0xf4, 0x08 },
		{  999999999, 166667, 0xfc, 0x08 },
	},
};

Cheers,
Hermann

Quoted 57 lines

2008/11/15 Markus Rechberger <[email protected]>
On Fri, Nov 14, 2008 at 4:37 PM, Keith Lawson <[email protected]>
Quoted 54 lines
Quoted 10 lines · wrote:
On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices
Quoted 8 lines
It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).
I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.
br,
Markus
Quoted 4 lines
Quoted 4 lines
br,
Markus
Quoted 8 lines
Quoted 8 lines
Quoted 8 lines
Thanks,
Keith.
Quoted 3 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input
and
Quoted 13 lines
Quoted 13 lines
Quoted 13 lines
Quoted 13 lines
a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/<http://linuxtv.org/hg/%7Emchehab/tm6010/>
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.

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Markus Rechberger

2008-11-15 04:56 UTC #18 lore raw

Re: USB Capture device

In reply to a message not in the archive

Quoted 6 lines · Ben Klein

In general, there is no price advantage with getting a capture device without a tuner. There are at least two reasons for this:
1) Less demand for just a capture device. People want to turn their computers into idiot boxes

Quoted 9 lines

2) Most capture-only cards are (probably) TV tuners with the tuner disabled. It's cheaper for them to make that way.
I got a cheap-and-nasty USB em28xx that pretty much *just* works, but it's enough for me. It has a usb-audio device in it which seems to not sync up with the video. The only em28xx card= options that work with it are for cards with tuners (though that doesn't necessarily mean that the card has a tuner).

I'm improving this right now actually. Most applications are just decoupled in that area
processing audio and video separated. I'll see how much can be done. I think it can end up in a quite acceptable result.
I also got around to change the whole audio detection for these devices in userland.
Some interesting things will come up in that area within the next weeks.

br,
Markus

Quoted 9 lines

I also have a PCI K-World Vstream Xpert DVB-T (cx88), which I selected due to it having a good price and analogue capture. Turns out I've used the analogue capture more than the digital reception. :) The analogue capture *looks like* a full TV tuner with the tuner disabled, but I could be wrong about this too.

Quoted 87 lines

2008/11/15 Markus Rechberger <[email protected]>
Quoted 84 lines
Quoted 16 lines · Keith Lawson
On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices
It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm
not sure if that's a driver issue or an mplayer issue.
Quoted 4 lines
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).
I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.
br,
Markus
Quoted 41 lines
Quoted 40 lines
br,
Markus
Quoted 35 lines
Thanks,
Keith.
Quoted 15 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input and
a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Quoted 8 lines
Thanks, Keith.
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Keith Lawson

2008-11-15 15:41 UTC #17 lore raw

Re: USB Capture device

In reply to Ben Klein

Quoted 8 lines · Ben Klein

(oops, forgot to send this to the mailing list)
In general, there is no price advantage with getting a capture device without a tuner. There are at least two reasons for this:
1) Less demand for just a capture device. People want to turn their computers into idiot boxes

Quoted 9 lines

2) Most capture-only cards are (probably) TV tuners with the tuner disabled. It's cheaper for them to make that way.
I got a cheap-and-nasty USB em28xx that pretty much *just* works, but it's enough for me. It has a usb-audio device in it which seems to not sync up with the video. The only em28xx card= options that work with it are for cards with tuners (though that doesn't necessarily mean that the card has a tuner).

Can you send me a link and/or name for that device? Sounds like it's exactly what I am looking for. TIA.

Quoted 90 lines

I also have a PCI K-World Vstream Xpert DVB-T (cx88), which I selected due to it having a good price and analogue capture. Turns out I've used the analogue capture more than the digital reception. :) The analogue capture *looks like* a full TV tuner with the tuner disabled, but I could be wrong about this too.
2008/11/15 Markus Rechberger <[email protected]>
On Fri, Nov 14, 2008 at 4:37 PM, Keith Lawson <[email protected]>
Quoted 72 lines
Quoted 10 lines · wrote:
On Thu, 13 Nov 2008, Markus Rechberger wrote:
<snip>
Quoted 5 lines
are you sure this device is tm6000 based? I just remember the same product package used for em2820 based devices.
http://mcentral.de/wiki/index.php5/Em2880#Devices
Quoted 8 lines
It's a TM5600 device. I've been able to capture video from it using the tm5600/tm6000/tm6010 module from Mauro's mercurial repository but I'm having an issue with green flickering a the top of the video, I'm not sure if that's a driver issue or an mplayer issue.
Are you aware of a em2820 based USB "dongle" device? I don't require a tuner, I'm just trying to capture input from S-video and composite (RCA).
I just had a rough look right now, the prices vary alot between different manufacturers.
I haven't seen a price advantage for devices without tuner actually. You might pick a few devices from that site and compare.
br,
Markus
Quoted 4 lines
Quoted 4 lines
br,
Markus
Quoted 8 lines
Quoted 8 lines
Quoted 8 lines
Thanks,
Keith.
Quoted 3 lines · Keith Lawson
Hello,
Can anyone suggest a good USB catpure device that has S-Video input
and
Quoted 28 lines
Quoted 20 lines
Quoted 20 lines
Quoted 19 lines
a
stable kernel driver? I've been playing with this device:
http://www.diamondmm.com/VC500.php
using the development drivers from
http://linuxtv.org/hg/~mchehab/tm6010/<http://linuxtv.org/hg/%7Emchehab/tm6010/>
but I haven't had any luck with S-Video (only composite).
Can anyone suggest a device with stable drivers in 2.6.27.5?
Thanks, Keith.
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Quoted 7 lines
Quoted 6 lines
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