A new version of the func users & groups management module has been released for public user and/or review. The updated module can be found here: Func Users Module v0.3.
This release includes some coding style alterations to the already extant informational methods, as well as a boatload of new methods that will allow you to:
- Create, delete, and modify groups.
- Create, delete, and modify users.
- Manage the memberships of users within groups
To do:
The current implementation of user_add has very few options, and incorporating these options is most of what's on the feature list for v0.4. In the mean time, most sorts of users you would like to create can be created by first creating a user with relatively default settings using user_add, and subsequently modifying any properties you'd like changed. It would be nice if these additional steps could be cut out and the user be instantiated with the desired options with one method call.
Enjoy!
Friday, December 5, 2008
Tuesday, December 2, 2008
LPT730 Assignment #2
LPT Assignment 2: Converting a DV video to distribution formats using open source tools on Linux
Step 1: Exporting the video from Quicktime to DVD:
First, I took the provided file and converted it to DV. This was accomplished by loading the file in Kino and selecting 'export' on the vertical tab bar, followed by 'DV file' on the horizontal tab bar, and then proceeding to hit the 'export' button and select the desired output filename.
Step 2: Improving the audio quality:
The provided audio file had several problems - it was recorded in stereo, but it appears to actually be two mics, one worn by the speaker, and one worn by an announcer who speaks only briefly at the beginning. To correct this, I used Kino to export the audio track from the DV file and loaded it up in Audacity. In eh editor, I amplified the brief period of conversation from the announcer, mixed it over the speaker's track in the other channel, and then copied that channel over both, creating a mono mix where both speakers are clearly visible. Noise reduction was then applied to reduce some of the ambient noise, after which the file was normalized to 0 db.
Step 3: Replacing the audio in the original DV file with the corrected audio
To replace the audio with our new, cleaned up version of the track, I launched Cinelerra, imported both the video from the DV file and the audio file produced by audacity and selected the 'render' option from the file menu to produce a new DV file with the new audio.
Step 4: Transcoding to Theora
To transcode the DV file to theora, I install the ffmpeg2theora package and it's dependencies and, after reading the man page to determine the syntax, ran the script shown above. This actually produces many more files than we need at a variety of quality settings. To select the final files, each produced file was checked with the 'ogginfo' command and those with bitrates closest to the desired bitrates were selected.
Step 5: Transcoding to MPEG2
To transcode the video to MPEG2, the following commands are saved to a file, 'trans', and then executed:
transcode -i Out.dv -o out.avi -V -J smartyuv,hqdn3d,msharpen -Z 640x480 -y null -w 1800 -b 256 -R 1;
transcode -i Out.dv -o out.avi -V -J smartyuv,hqdn3d,msharpen -Z 640x480 -y -w 1800 -b 256 -R 2
Step 6: Transcoding to H264
To transcode the video to H264, I installed Mark Pilgrim's podencode python script and ran it on the AVI file (unfortunately, I could find no working tool to convert this directly from the DV file).
Step 1: Exporting the video from Quicktime to DVD:
First, I took the provided file and converted it to DV. This was accomplished by loading the file in Kino and selecting 'export' on the vertical tab bar, followed by 'DV file' on the horizontal tab bar, and then proceeding to hit the 'export' button and select the desired output filename.
Step 2: Improving the audio quality:
The provided audio file had several problems - it was recorded in stereo, but it appears to actually be two mics, one worn by the speaker, and one worn by an announcer who speaks only briefly at the beginning. To correct this, I used Kino to export the audio track from the DV file and loaded it up in Audacity. In eh editor, I amplified the brief period of conversation from the announcer, mixed it over the speaker's track in the other channel, and then copied that channel over both, creating a mono mix where both speakers are clearly visible. Noise reduction was then applied to reduce some of the ambient noise, after which the file was normalized to 0 db.
Step 3: Replacing the audio in the original DV file with the corrected audio
To replace the audio with our new, cleaned up version of the track, I launched Cinelerra, imported both the video from the DV file and the audio file produced by audacity and selected the 'render' option from the file menu to produce a new DV file with the new audio.
Step 4: Transcoding to Theora
To transcode the DV file to theora, I install the ffmpeg2theora package and it's dependencies and, after reading the man page to determine the syntax, ran the script shown above. This actually produces many more files than we need at a variety of quality settings. To select the final files, each produced file was checked with the 'ogginfo' command and those with bitrates closest to the desired bitrates were selected.
Step 5: Transcoding to MPEG2
To transcode the video to MPEG2, the following commands are saved to a file, 'trans', and then executed:
transcode -i Out.dv -o out.avi -V -J smartyuv,hqdn3d,msharpen -Z 640x480 -y null -w 1800 -b 256 -R 1;
transcode -i Out.dv -o out.avi -V -J smartyuv,hqdn3d,msharpen -Z 640x480 -y -w 1800 -b 256 -R 2
Step 6: Transcoding to H264
To transcode the video to H264, I installed Mark Pilgrim's podencode python script and ran it on the AVI file (unfortunately, I could find no working tool to convert this directly from the DV file).
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