Posts tagged: rendering

Blender video editor

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By , December 21, 2010 02:56

I m producing a video in Blender so thats my live report, this tutorial will be corrected and make it bigger in the future.


To start lets enter in the windows setup for video editing: drop down menu and choose the number 4th : SEQUENCE

Strange that Blender dont use the standard names, like footage or clip, using strip instead.

blender video add fxEFFECTS

Select the strips you want to apply the effect to and press spacebar to see appear the menu, then click on

[ADD] -> effect -> Add

That will create a strip that is your effect, with the length of the strips intersection, right above the selected video strips,

move the mouse around to decide on witch level is positioned.

The effects strip can be resized like any other video strip.

Frequently unfortunally is not possible to add an fx contemporary on 3 strips or more, only 2 strips are aloud.

But there are many effects possibilities and each effect has different setup.


To fade is not so intuitive, but give you the possibility to fade not only to black or white as normal video editor, you choose the background color, so at first
You can use it for fade in and fade out between to clips, ehm Strips in Blender terms, Fade from a strip the first selected to the other, the last selected

Gamma Cross

Add Sequence Strip

select the clips and press (spacebar) -> Gamma Cross

Now you ll need to add a efx strip called
[ Color Generator ]
and then Setup the sequence strip

Color Generator fills the frame with whatever color you select (via a color picker in the buttons window). You can make it black, put it in a channel over your video strip, then select both strips and add a Cross on top of them to dissolve between your strip and the Color Generator. (

Remember that the standards shortcut are the first Letter of the action you need.
Frequently in Blender the commands are compressed into 1 shortcut, and not into two different actions.

a -.-.-. it means ALL
select / deselect all clips
In this case what happen clicking A it depends if the strip is already selected or not.

G .-.-..- grab move
move the selected files
for example to move all the strips together: (a) then (g)

C.-.-.-. copy
copy that automatically paste

pratically KUT! coming back on the idea that normally the first letter of a command is a shortcut, is not always like that, but in this case nothing is better then K shortcut, when C is copy combined with CTRL,

mouse usage:
the mouse is sensible to dynamic that means that you click and move the mouse to activate some actions
right click hold press + mouse move it means G (grab / move)

TEXT editing
Drop down menu to enter in model windows setup

ADD (Spacebar) -> text
and then edit Mode to change the text


Rendering FRAMES
press [Render] then press F3 save jpg as



In order to render the videos, you have to select the [Do sequence] option right below the [ANIM] in the Scene (F10) menu. The output file(s)

will create in the directory set in the first box of the output group.

By default, blender will render each frame into a separate jpg file, but the output could also be an avi file. To do this, you chose AVI codec in the drop-down list of the format group. In this case, the name of the output avi file will be taken from the text entered in the output box.

For instance, if it says C:\Users\Render\test the output file will be named test0001-0250.avi and created in C:\Users\Render. 0001-0250 reflects the frame range, which of course can be also modified by just entering the desired values for the start and end frames of the animation.

…” ( )

Video Editing with Open Source

By , August 14, 2010 11:35

After 4 years in the Open Source scene I m finally able to generate a complete video with Open Source Software.
Was an hard work, many video editors are started but none is complete.
Guys cooperation! please!
Do not try to do only your own stuff, if there are some developer reeding this post, please start to develop Blender features.
YES after my testing, Blender is the best Video Sequence Editor the open market propose:
– stable, Blender dont crash [ if you dont change the CPU usage settings and at the same time rendering (:P) ]
– has many functionality and easy to add FX when you know the technical words that the software use
– Is planned to render, so the dimension of the output has completly individual setup. You can choose between standard formats, but also choose the dimensions of the video in pixels AND the dimensions of the pixel individually, mix up the settings, things that in Kdenlive & co I did not found, there are in Kdenlive many choises between different format and pixel dimensions, no more paranoia about strange web video format, you can make your video with your own custom format
– with particles engine and video texture can be used for post production and compositing like After Effects
– Titles and credits, the text is already editable in EDIT MODE
– Good windows Customization, you can combine the editing windows, but you can choose between 5 view mode in a quick drop down menu, again also the drop down menu has ADD NEW to personalize.

I tought was banal speak abuot Blender video editor but then I have recognize that not all the nerds are informed about, then soon I will post more info about video editing on Blender.

All the other free software I tried have some gap to fill.
There is no chance, I can proudly say
I m a Blender!

Italian article that thinks the same as me:

Small Render Farm or at least a Render Flat

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By , July 31, 2010 13:39

Producing small videos, animations and vjset live as a Freelancer, is easy questioning yourself about building a Render Farm machine to allow to work on huge amount of video data. In my case it will be maximum a Render Flat.

I m Not interested in producing cinema movies, but compositing for shorter projects. I use Blender, but I also use Resolume for vjing, I know how many frames go lost trying to record generated images, or live sets in digital format.

The machine must be cheap for the materials and eco-compatible with low energy consume. What is normally suggested to Do is : Do not spend more then 30% of what you will spend on a true one. A true one will cost a lot – around 30.000€ (Render Stream blog entry) minimum 15.000€, the 30% is between 4500€ and 9.000€

I cannot spend more then 3000€

For Networking TK is using old PIII mother board, but for video… I m afraid with low quality material you realize a machine with the same price of a powerful single computer that can maybe do the same work alone. Lets say I ll start with 8 cpu that will cost around 170€ each one for a total of 1200€ . There is still to calculate the hours of work of the technicians. After you got the case and cables we pass on the softwares, to connect the CPU with a workload management system Condor High Throughput Computing that will optimize the CPU usage, at least for performances, if not for eco-sustainability (but this sofware solution is even too big for my needs) .

The Big Buck Bunny used Sun’s Grid to coordinate average of 150 CPU’s at a time! producing around 4h per frame.

The best links to projects about DIY Render Farm found today: Helmer history (self built machine) this lovely monster is my target a cheap homemade in a great Iron case! he promise “…this machine just costs as much as a better standard PC, but has 24 cores that run each at 2.4 Ghz, a total of 48GB ram, and just needs 400W of power!!” cool explication DIY

MY ABSURDS Idea Considering I m Berlin based will be great to build the machine in horizontal and place it like a pavement on the floor, with a pipeline for ventilation with 2 exits, 1 outside the room and 1 inside the room. That can be a good winter solution to substitute coal heating for cheap rents and let in summer the hot air out

Niklas and Tk suggest both to use a Blender script and Tk seems to be convinced to can use one of our Networks computer, with 2 or 2×2 GHz, but I m speaking about a video-brain, usable for producing different kinds of videos, not an unique Blender output, for example a compositing of stop motion in HD with digital animation. A machine that allows you to promise good quality fast rendering, remember that is a job standalone to render, can even bring specific clients. I believe our 2×2 ghz network machine is enough to start, but in the while you render you will have no much possibility to use the computer otherwise. and you cannot risk to loose some frames for overloading and restart rendering the scene. Anyway is a long time project that can be realized before 2012, nothing now and nothing fast. Is only that I have 1000 projects and Im always in doubt how to invest the money, professional video camera or professional computer? both are around 3000€ Analyzing the market and my clients I ll say our computers are always running and the camera you can rent it for short period.

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