Tag Archives: video

Features5 PDF for Cinelerra-GG

Since I can’t find it anywhere online currently here’s the Features5.pdf file from Cinelerra-GG 09/30/2018 release. It documents the Cinelerra-CV and Cinelerra-GG feature set.

Also, it coincidentally has the VP9 settings for Cinelerra that I couldn’t find listed anywhere else under chapter 3.4. Hopefully this helps anyone else whom can’t find it on the Internet while searching.

And since you might be looking for the Cinelerra video editor you can find the -GG version at the project’s website.

Prusa i3 Mk3 MMU 2.0 Banging on Start

If you haven’t seen it yet Prusa’s i3 Mk3 MMU 2.0 printer module offers up multi-material printing using five pre-loaded filaments with a single extruder. The magic happens with a fairly ingenious filament selector module hanging out above the printer proper.

And it works. The selector is adequate at selecting filaments and I’m not seeing much of an issue with it’s functionality. That’s barring wildly out-of-diameter filament widths (1.9mm+ instead of the spec 1.75mm).

However, there seem to be some teething problems with the software design. One of the issues I’ve come up with on that end is the auto detection and alignment of the MMU 2.0 carriage.

On start the MMU 2.0 seems to be detecting the right end of the carriage too soon. Then it hammers against the left side of the carriage when the MMU 2.0 moves back. It’s using resistance on the stepper motor driver and appears to be very sensitive. 

I’ve posted two videos, the first of it working properly and the second of the failing carriage detection. If you’re curious about the MMU 2.0 or are trying to check if what you’re own printer is doing is normal here you go.

Eken H9/H9R/H9S Action Camera WiFi Connection

You may own an Eken H9 series action camera. You may, like myself, have gotten a few different lenses for it to modify it for your own, non-fisheye, use.

But how will you connect to it either through a wire or wireless?

All you need is an application (VLC will do) that can read in an RTSP stream (read more on those over at Wikipedia) and punt it to wherever you’d like.

Be aware that you won’t be streaming out at full resolution (yet? maybe impossible?). While it does work the Eken can only output “standard def” 480p with the following network connection address.

I’m still looking into changing the URL around for different streams. Unfortunately the Eken flat out crashes if you connect to an invalid URL. That’s not exactly the best handling on error conditions there folks!

NMAP reports the following on ports 1 through 1000 (TCP) when it’s not active:
Nmap scan report for
Host is up (0.0084s latency).
Not shown: 998 closed ports
21/tcp open ftp
554/tcp open rtsp
And for UDP:
Nmap scan report for
Host is up (0.0086s latency).
Not shown: 999 closed ports
67/udp open|filtered dhcps
MAC Address: xx:xx:xx:xx:xx:xx (Unknown)
And the connection address is:


  • Q – might be a quality setting? While I didn’t notice a difference this would probably require objective testing
  • W – is width (this doesn’t appear to change the cameras output; just the size displayed rendering it extremely dithered)
  • H – is height (this doesn’t appear to change the cameras output; just the size displayed rendering it extremely dithered)
  • BR – No idea as of yet

It also runs an FTP server on the address sharing out all the contents of your Eken to anything that connects up to it. Poor error handling and poor security come prepackaged on this unit.

But the Eken is at the lowest price point you’re likely to find. And the quality is in the cheap and cheerful camp rather than total crap. At the 40~50 USD price point I like it!

Other notes on the Eken H9 series:
  • With the exception of the Plus they’re all interpolating up to 4K; the native hardware only handles up to 1080P 60fps well in my experience
  • Eken’s H9 is running a wifi network at 54mbps (20mhz, no HT). That’d suggest 802.11g standards.
  • The camera has a built in DHCP service in addition to RTSP and FTP servers
  • Plug it in via USB without a memory card and it will act as a low-def video streaming device
  • Plugging in the Eken’s USB cable seems to power it while streaming
  • I found that my Eken seemed to have a heating issue; It may get a modification to dissipate the heat more effectively
  • The WiFi RTSP with the above connection URL exports Motion JPEG (MJPG)
  • The user is “331” and the password is “wificam” for the ftp service
A note on VLC:
  • Tune down the network caching option under the network connection to reduce latency
Sources not listed above:

http://hackeken.blogspot.com/2017/01/reverse-engineering-eken-android-app.html#more: Listed the URL for connection as sniffed from WireShark. Hackeken also lists the username and password which are passed in clear-text.