kevin

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Posts by kevin

Canon Vixia HV40 HDV Format Notes

September 3, 2010 - 8:29 pm

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So far I have always converted my HDV footage to NTSC before editing. For a small project I’m working on now, I’ve decided to try working directly with the raw HDV footage. This thread explains why my m2t files show up as 1440×1080 even though they can be edited as 1920×1080 (aka 1080i). It has [...]

Using Smugmug as a Photo Backup Location

April 3, 2010 - 12:11 pm

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Posted in command line, photography, sysadmin | No comments

I’ve finally gotten around to uploading my photo collection. I’ve decided to pay for a subscription to Smugmug.com and so far I’m happy with it. I chose not to use Flickr or other options because I wanted a site which I could use as a private one-to-one backup of my personal store of photos. I [...]

Web Video

April 1, 2010 - 10:13 pm

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I’ve been experimenting with video codecs and formats for uploading video to the web (Facebook, Youtube, etc.). Encoding for the Web To make a tiny file, you can encode files this way: ffmpeg -i foo.dv foo.mp4 For better quality output, there are a number of variables you can control. I’m starting with two assumptions for [...]

Extract Audio Track from a Video File

February 23, 2010 - 10:36 pm

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I needed to isolate the audio track from an HDV video I captured from my camera. This command worked great: mplayer -dumpaudio video.m2t -dumpfile audio.mp3 as discussed here: http://linux.byexamples.com/archives/229/extract-audio-from-video-or-online-stream/

Video Production on Linux Workshop

December 16, 2009 - 6:07 pm

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Posted in video | No comments

I’m putting on a workshop/demo this evening to introduce some people to open source software and Linux for video editing. Here are the handouts: linux_video. Thanks to Western Arctic Moving Pictures for hosting the workshop!

Scripts for Monkeying with Cinelerra XML

November 30, 2009 - 2:53 pm

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Posted in sysadmin, video | No comments

I’ve moved my Cinelerra projects from one directory path to another and scrambled a few things in the process. I’ve written a few bash scripts which helped me sort things out. In the process, I’ve learned a bit about the xml format which Cinelerra uses to store references to files and edits. When you add [...]

Remove Unused Assets from a Cinelerra XML Project File

November 30, 2009 - 2:44 pm

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Posted in sysadmin, video | 1 comment

This is a bash script to remove all the unwanted assets from a Cinelerra project XML file. I needed it to cut out bloat from a project I was working on which had hundreds of unused resources after I split the project up into ten minute chunks. Doing so stopped Cinelerra from crashing when I [...]

List Unused Assets in a Cinelerra XML Project File

November 30, 2009 - 2:39 pm

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Posted in sysadmin, video | 2 comments

This is a bash script which contains a function used to figure out which assets in a Cinelerra project are not required for the edit list. I created it because I had pulled in a couple of thousand media resources for a project and wanted to eliminate bloat. I moved the project and found it [...]

Test File Paths in a Cinelerra XML File

November 30, 2009 - 2:33 pm

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Posted in sysadmin, video | 1 comment

This is a bash script to test all the filenames and paths in a Cinelerra project to make sure they are still valid. #!/bin/bash #kk test_xml_paths.sh #kk #kk check a cinelerra xml file to make sure the file references are all valid #kk provide filename to check as parameter if [ -z "$1" -o "$1" [...]

Creating Subtitles/Captions for a Video Project

November 25, 2009 - 5:56 pm

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Posted in video | 2 comments

I’m working on a quick 20 minute video for a non-profit group (and I do mean quick — less than two weeks from initial contact to the premiere). Everything has come together pretty nicely and I’ve finished the editing to my satisfaction in Cinelerra. Because some of the interviewees in the video have impaired speech, [...]