Velvet Revolver has now support for h264 conversion


As requested long ago by Nathan, Velvet Revolver has now support for h264 encoding. This is still experimental, but should work both for proxy generation and full-res copy creation. Reasons for such change are actually simple.

Technically, the suitable formats for editing are ProRes and MJPEG. This is especially true when you want to change the speed of those videos by using the “Speed control” effect in Blender’s Video Sequence Editor.

Second, my old recycled laptop computer, a Pentium M from 2005 (!), finally died. I was never able to edit videos on it, for obvious reasons. Last month, I bought myself a newer machine, an i5 ThinkPad from 2010. Video editing there seems promising with SSD, but asking for ProRes or MJPEG is simply too much because disk space there is an issue – the files are simply too big.

Used and older computers are great because you save some electronic waste and prove, at the same time, that 2D video can be achieved at lower cost machines, which can be crucial for activist groups. If you’re in the field, you need something fast, light and at hand, so h264 makes a hell lot of sense in this scenario.

Thanks Nathan for pointing that out in the first place and encouraging it, even though time has been short here and it took way longer than expected to have the peace of mind of implementing those changes.

Beware, though! Changes with the “Speed Control” effect may not render or work as expected since h264 is not an intra-frame codec. Test whatever you want to do before assuming things will go smooth with the 30′ documentary you have to deliver in the next 2 days.


Also: as computaholic pointed out at GitHub, Velvet Revolver was having issues when converting files down from 59.94fps to 29.97fps. When Blender 2.77 was released, direct access to the project’s FPS* seemed not to be working, so I changed the code to mimic the way Blender was supposedly calculating it. It turns out the old code is actually working now, so I raised the previous version from the dead and any problems should be fixed now.





  1. Loraine says:

    I was just looking at your Velvet Revolver has now support for h264 conversion | the Blender Velvets website and see that your website has the potential to become very popular. I just want to tell you, In case you didn’t already know… There is a website service which already has more than 16 million users, and the majority of the users are interested in websites like yours. By getting your site on this service you have a chance to get your site more visitors than you can imagine. It is free to sign up and you can read more about it here: – Now, let me ask you… Do you need your website to be successful to maintain your business? Do you need targeted visitors who are interested in the services and products you offer? Are looking for exposure, to increase sales, and to quickly develop awareness for your website? If your answer is YES, you can achieve these things only if you get your website on the service I am describing. This traffic network advertises you to thousands, while also giving you a chance to test the service before paying anything at all. All the popular websites are using this network to boost their readership and ad revenue! Why aren’t you? And what is better than traffic? It’s recurring traffic! That’s how running a successful website works… Here’s to your success! Read more here: – Unsubscribe here:

    • szaszak says:

      Hi Loraine. Thanks for the tips. The idea is to have something that is low maintenance but at the same time useful for the community so that we can keep a balance in which everyone is well at the same time. This way the Velvets will always be free in all senses, piece of mind included. =) Of course, it’s lovely to know there’s more people using them, but if it became like super popular, I probably would have to consider separating more time for improvements or bug fixing than I currently have, being an activist myself. =) But, of course, if you can do anything to spread the word about the Velvets, it’s always great! =)

Leave a Reply

Your email address will not be published.