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Today's Topics:
1. Re: Lines on displayed image (Alessandro Parmiani)
----------------------------------------------------------------------
Message: 1
Date: Wed, 27 Dec 2017 15:45:38 +0100
From: Alessandro Parmiani <ale.parmian...@gmail.com>
To: Motion discussion list <motion-user@lists.sourceforge.net>
Subject: Re: [Motion-user] Lines on displayed image
Message-ID:
<cak2p7ax680d7ysp5603p7wphb+e9v193rdcmwtguonrl1h-...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Ok,
The first command output is:
pi@raspberrypi:/ $ v4l2-ctl -d /dev/video0 --list-formats-ex
Failed to open /dev/video0: No such file or directory
In the log i don't see any URB packet error.
For the small video i use i googledrive link because the are problems of
mail size.
Check if you can download it.
?
13-54-11.mp4
<https://drive.google.com/file/d/1gJLGfMKWOuXlV6lEBRkgNh0tnZEjFhbu/view?usp=drive_web>
?
Thanks
Alessandro
2017-12-27 14:46 GMT+01:00 tosiara <tosi...@gmail.com>:
> Timothy,
>
> can you collect the following info:
>
> output of "v4l2-ctl -d /dev/video0 --list-formats-ex"
> a short sample video 2-3 seconds?
> during motion run do you see any USB related messages in syslog (like URB
> packet error)?
>
> Those lines look like a wrong bytes being written into buffer of there
> could be incomplete or truncated frames coming. If you don't see those
> lines in VLC that could mean you are using different resolution/pixel
> format with the player
>
> On Wed, Dec 27, 2017 at 1:57 AM, MrDave <motionmrd...@gmail.com> wrote:
>
>> I'll add a issue to the project to address the abort. (There is already a
>> bug filed upstream in ffmpeg on it).
>>
>> It is surprising this option does not function. There are only two
>> options that are specified in Motion for this method. The
>> dimensions(height/width) and the framerate. If you try a `ffprobe` of the
>> device, it should report the device defaults on these and you can try those
>> as the configuration options in Motion.
>>
>> MrDave
>>
>> On 12/26/2017 10:14 AM, Timothy Buchanan wrote:
>>
>> I upgraded to 4.1.1. Using netcam_url v4l2:///dev/video1 and each palette
>> 0 through 17 and 21, I get ?unable to open video device,? except with
>> palette 8, which causes a program abort. Running ffplay ?f /dev/video1
>> produces a good image, though I get repeated warnings that the dequeued
>> vl42 buff contains corrupted data (691200 bytes). Suggestions? Thanks.
>>
>>
>>
>> Timothy
>>
>>
>>
>> *From: *MrDave <motionmrd...@gmail.com> <motionmrd...@gmail.com>
>> *Reply-To: *Motion discussion list <motion-user@lists.sourceforge.net>
>> <motion-user@lists.sourceforge.net>
>> *Date: *Sunday, December 24, 2017 at 2:12 PM
>> *To: *<motion-user@lists.sourceforge.net>
>> <motion-user@lists.sourceforge.net>
>> *Subject: *Re: [Motion-user] Lines on displayed image
>>
>>
>>
>> Yes, the v4l2 via the netcam_url option functionality was added starting
>> in version 4.1 so it will not work with 4.0.
>>
>> Regarding the "unhelpful" message on the standard being set. 45056
>> means it set it to V4L2_STD_NTSC. Other video standards Motion may report
>> are 16711680 for V4L2_STD_SECAM and 255 for V4L2_STD_PAL. (This is legacy
>> code to print the number rather than a readable message).
>>
>> This is the first that I've heard of a usb device reporting options to
>> use different video standards so changing that parameter may assist.
>>
>> MrDave
>>
>>
>>
>> On 12/24/2017 11:46 AM, Timothy Buchanan wrote:
>>
>> I decided to start again from scratch by installing stretch (had been
>> using Jessie). The included add/remove GUI installed motion 4.0, not 4.1.
>> That version?s motion.conf offers the netcam option, but using netcam_url
>> v4l2:///dev/video0 returns a gray image with the error ?could not open.? Is
>> it only 4.1 that works with netcam? Curiously, vlc media player will open
>> the camera and display v4l2:///dev/video0 when doing so.
>>
>>
>>
>> As to the usb-to-analog device, it is the UCEC adapter sold on amazon and
>> has the UTV007 chipset. I have not installed any drivers. Where would I
>> find the driver Linux is using?
>>
>>
>>
>> Thanks again for help.
>>
>>
>>
>> Timothy
>>
>>
>>
>> *From: *tosiara <tosi...@gmail.com> <tosi...@gmail.com>
>> *Reply-To: *Motion discussion list <motion-user@lists.sourceforge.net>
>> <motion-user@lists.sourceforge.net>
>> *Date: *Thursday, December 21, 2017 at 9:59 AM
>> *To: *Motion discussion list <motion-user@lists.sourceforge.net>
>> <motion-user@lists.sourceforge.net>
>> *Subject: *Re: [Motion-user] Lines on displayed image
>>
>>
>>
>> I have had some issues with usb-to-analog devices, like Easycap and
>> similar. At that time indeed only motion had those issues, but after some
>> changes in the driver the issues were resolved. So it could be some
>> compatibility with the hardware's driver. Can you provide more details what
>> kind of capture card you are using?
>>
>> As a workaround you can use the way MrDave mentioned - capture through
>> the netcam. Specify this url:
>> netcam_url v4l2:///dev/video0
>>
>> Please report back if you still get corrupted image using netcam
>>
>>
>>
>> On Thu, Dec 21, 2017 at 6:43 PM, Timothy Buchanan <
>> timothyebucha...@gmail.com> wrote:
>>
>> MrDave and tosiara, thanks for help. I?ve attached the motion log and
>> output of one of the cameras (there are three, but all the same) to the
>> command v4l2-ctl -d /dev/video0 ?all.
>>
>> Palette YUYV seems to be the only one supported, and that is chosen. I
>> set the config to use NTSC, but it always chooses ?standard method 45056.?
>> I don?t find any info on that.
>>
>> Do you see problems in the output files I?ve attached? Thanks again.
>>
>> timothy
>>
>>
>>
>>
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>
>
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