# Synchronisation between Video and UI/Image editor

I am a fresh Blender user. I started collecting training videos and some of them are very explanatory indeed. So I guessed, following their instructions I could manage. The problem I describe here is a problem I have with all the videos I shot with my Panasonic Camcorder HC-VX870.

In this video, wanted to blur the ship floating on the river Seine.

System imformation : Computer ASUS Desktop PC P30AD Processor 4 Intel Core i3-4160 CPU @ 3,60 Ghz Memory : 3914 MB OS : Ubuntu 16.04.2 LTS

Specs of the video : Duration : 1 minute 24 seconds Container : Quicktime

Video : Dimensions : 3840 x 2160 Codec : H.264 (High profile) Frame rate : 25 fps Bit rate : 61128 kbps

Audio : Codec : MPEG4-AAC Channels : Stereo Sample rate : 48000 Hz Bit rate : 256 kbps

Media details Demuxer : lavfpref

Let us now take a look at the process itself.

Step 1 : I add the video. It appears in the upper-right side window. Everything works fine.

Step 2 : I open the UV Image Editor in the upper-left side window . OK.

Step 3 : I create my mask (upper-ledt side window). I call it Blur_01. OK.

Step 4 : In the Upper-left side window, I open the video. It appears. No sinc yet, but so far, so good.

Step 5 : In the Upper-left side window, I select View/Properties, in order to sync the left side and right side.

Step 6 : In the Upper-left side window, I now tick the Match movie length and Auto Refresh boxes… and the video disappears.

I have been trying hard over the past week to solve this problem, to little avail, so I am turning to you now.

I also tried on Blender 2,76. I managed to move my mask around in the UV Image Editor, then I ended up with two cases :

• If I start from image 1 (say image 1 to image 50), everything seems t work fine and I manage to get full sync (i.e. the mask moves around nicely in both windows).

• If I start from another image (say image 51 to 100), then I cannot get the sync and, while the mask moves around in the Upper-left side window, it stays stuck at image 51 in the Upper -right side window.

I hope I clearly stated the nature of my problem. Thanking you in advance for your time and efforts.

• It could really help if you try with the last version 2.78c because it could be a bug. – PhoneixS Jun 28 '17 at 7:02
• Hi, thanks for your reply. Actually, the version I am using is already 2.78c. Indeed, I had not noticed the (little) c coming after '2.78' in the opening splash window. – Olivier Massot Jun 29 '17 at 7:53
• I lately tried with version 2.79 and faced the same issue. Too bad, as Blender seems to be the software I need. Thanks for your time and effort anyway. I'll keep trying... – Olivier Massot Jul 13 '17 at 4:36

I recommend you to convert the video to an image secuence, you can do it with Blender if you want, render the video without changes to a series of images. Anyway I prefer using ffmpeg to do this job, is free and you have lots of examples on Internet.