I use Toradex Analogue Camera Adapter (ACA) to connect Camera to Ixora V1.1A board and I use a standard PAL analogue video camera as input.
The problem is when I start gstreamer pipline the video started to show from top of screen and continue until stop at the bottom of screen. I see the problem always when I:
start the pipline
disconnect the camera and connected it when the pipline is running.
I use different srcs and sinks but the result not different.
Hi @jaski.tx
This is my pipline and the console messages:
root@apalis-imx6:~# gst-launch-1.0 imxv4l2videosrc device=/dev/video0 ! imxeglvivsink -e
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
[ 939.527237] imx-ipuv3 2400000.ipu: IPU Warning - IPU_INT_STAT_5 = 0x00000001
when I disconnect and reconnect camera do not show any message on console
I download the the latest Toradex demo image (Apalis iMX6 (2.8b5 | 2018-12-28 | 157.64 MB)) and the video result was the same.
Hi All,
I had the same problem and I could not solve it either.
The problem is easily seen if you disconnect and reconnect the camera to Analog Camera Adapter several times while a loopback or record pipeline is running.
Let me explain it more to recreate the problem.
1- Run the following gstreamer pipeline to display a video loopback.
gst-launch-1.0 imxv4l2videosrc ! autovideosink
2- Disconnect the camera from Analog Camera Adapter and reconnect it again several times. Most if the time you see that the image is not synced vertically. It starts scrolling or rolling downwards until it reaches the correct vertical position. Then it stops and it never happens again, until you disconnect/reconnect the input video connection.
Check these images:
Original Frame:
[upload|3IlAEmN/MLazfDkSz6QRAbGXV5Y=]
The problem is when I start gstreamer pipline the video started to show from top of screen and continue until stop at the bottom of screen. I see the problem always when I:
start the pipline
This is normal, the first streams from the analogue are not synchronized. You might change the driver of adv7280 to see an image first, when the Frames are synchronized.
disconnect the camera and connected it when the pipline is running.
If you disconnect and reconnect the camera, the chip of the ACA Converter needs to relock to the camera signal, thus the first frames are not synchronized. Here also you might try to change the driver to achieve what you want.
But I think this is not the problem with ADV7280 driver.
It would be normal if it was just 1 frame. It takes about 7 seconds for the picture to relock to VSync.
Please check [this Youtube video][1] to see what this phenomenon looks like.
t would be normal if it was just 1 frame. It takes about 7 seconds for the picture to relock to VSync. Please check [this Youtube video][1] to see what this phenomenon looks like.
Did you try this on one of our regular Bsp images? Which camera are you using?
Dear Jaski (@jaski.tx ) I use the latest BSP image and I am using a Sony Industrial Camera. (PAL)
I even tried changing the camera (NTSC) and the result was the same.
Hi Prog ( @prog ) are you sure you have this problem when you start the pipeline.
No matter how many times I tested this problem, it never happens when I start the pipeline.
It only happens when Video is switched between two different sources or when it is disconnected and reconnected.
Try switching video with two different analog cameras:
Yes, I tested this but it is not a solution but it show the problem in different way!
When you have two different camera input and switch between them, the relock process takes about 7 second with picture scrolling.
The problem is after input video switch to another input (when pipeline is running) the video do not sync after one frame, it takes about 7*25 frames.
Dear @jaski.tx ,
With all due respect, I think you did not get the problem.
Sync time under 1 second is acceptable. But in this case, sometimes it takes about 7 seconds for the video to stabilize.
In fact it is not a problem with ADVsync in my idea. Because the video frame looks OK. It just scrolls down until the first line of video reaches line 0.
I do not want to decode multiple analog video inputs on a digital bus at a same time, but I want to switch between my video inputs and decode only one of video inputs at any time.
The solution that suggested by @MoZa can be useful if you can help me to implement it.
