Monday, 20 June 2016

Bad Taxi III


Taxi double parked at a busy junction. But it's fine because ... hazard lights.



This is also the first video I've edited with Blender. I normally use Kdenlive. But it went wonky for no reason at all. If you'd like to know how to use Blender for video editing. Check out these tutorials. https://youtu.be/UEIkIrYQYYY?list=PLjyuVPBuorqIhlqZtoIvnAVQ3x18sNev4



I also used The Gimp for the title text. The results were just better than Blender alone. And then I used Handbrake to transcode the video into a more compressed format. I wasn't happy with the quality Blender was producing for lossy formats. So I used the lossless options and then Handbrake.

Sunday, 29 May 2016

Ubuntu Tip: GoPro Hero 4, gphoto2, USB

There are a couple of methods in Ubuntu to get your content off of a GoPro. We can connect to the GoPro over WiFi. We can download content directly from the SD cards and we can download content from the camera via USB. Just drag and drop.

Each method has is pros and cons. WiFi can drop out and it's painfully slow for 4GB HD video files. Constantly removing and inserting SD cards does them no favours. And dragging and dropping is hard to automate with a script.

Finding the GoPro on the command line takes effort. I personally couldn't do it. Yet Nautilus finds the camera without any problem. And if you look at the actual address of the camera in Nautilus (ctrl+l). Things get a bit stranger still. It's not a normal directory listing. Instead we get something weird , "gphoto2://[usb:003,003]/". Which the usual command line tools won't touch.

There are a number of ways we can get around this problem. We can opt for WiFi and wget. Except WiFi is slow. Fortunately the clue we need is in the camera address. In particular the "gphoto2" part. This seems to be part of a suit of tools for nix OS's. It allows them to talk to digital cameras. And Ubuntu doesn't have the command line tools installed by default.

We can however fix this. Open a terminal and run the following command.

sudo apt-get install -y gphoto2

Before attempting to use the gphoto2 command line tool. Unmount the GoPro in Nautilus. Otherwise the gphoto2 command line tool won't be able to talk to the GoPro.

I haven't actually downloaded any files with this tool yet. But I can confirm that it will talk to a GoPro Hero 4 Silver edition camera. There are a lot of switches listed in the man page I'd like to read over and understand before diving in. But if you want to download files from your GoPro via the command line over USB. This seems to be the way to go.

To be continued ...