This is an extract from a CBC Radio podcast called Comedy Factory, a short weekly compilation of funny skits etc from CBC Radio. It just made me laugh so I thought I’d share it. Anyone who follows both politics and hockey will enjoy it.
Hillary wins the Stanley Cup
The original podcast was about 11 minutes, I used some free* software called Audion to extract just the 1.5 minute portion that I wanted. I didn’t do this just for the fun of sharing this link, but also because I was testing the software for its usefulness in preparing listenings for ESL classes. Often there is an interesting portion of a podcast that would be much more manageable as a smaller extract. The benefits are that you don’t have to save the entire podcast, but just the extract (disk space consideration), you can use tags or genres to pull the extracts together into teaching resource playlists, and of course, you don’t have to spend class time fiddling around finding the portion of the listening you want.
In addition to doing this for audio files, I’ve happily also been successful doing this for video clips as well. Because often we only want to show a short pre-prepared portion of a video to a class, it could be useful to have just that portion available on a laptop rather than carry around the entire DVD. Another bonus is that lesson plans can be created for small pieces and then the pieces can easily shared among teachers. The good news is that it was remarkably easy to do what I wanted, using only free software.
For teachers who want to extract a short clip from a DVD, here’s the steps I used.
1. Find a DVD that you want a portion of. In the DVD player, take note of what chapter(s) you want, and what format of subtitle and audio track you want.
2. Use a free* program called HandBrake (mac and win) to convert the DVD to another format. I used AVI format but there are also some others available (MPEG4 most notably) that I haven’t yet experimented with. In HandBrake, select your source material (the DVD) and choose the chapter(s) that you want to convert. You can do them all but you will have a big file. I tried chapters from two DVDs, one 7 minutes long and one 3 minutes long. The 7 minute clip ended up being 90MB but it didn’t include any subtitles or extra audio tracks. The 3 minute clip was just 39MB but it did include subtitles and two audio tracks (English and Turkish).
3. Choose your preference for audio and subtitle tracks. two audio tracks are allowed, from whatever is available on the DVD. Just as usual, when viewing the final clip the audio tracks can be turned off and on as desired. Unfortunately, subtitles are actually burned directly onto the video so there is no way to toggle them on/off while viewing. If you wanted both you would have to create two separate files, one with and one without. Of course if you have them on, you can choose whatever language subtitle you want, as available on the DVD.
4. Click to start and it takes just a minute or two depending on the size of your selection. I couldn’t detect any difference in quality between the clip and the original.
There is another free* program for the Mac called Explicit which can take an AVI file and split it into smaller pieces. So if the final AVI you get from HandBrake still isn’t small enough, you can use Explicit to get exactly the part you want, going by the time markers. If you take a 2 minute segment out of a 7 minute chapter, you have to run split twice, first at the time marker for your beginning (you will end up with a part 1 and part 2) and then again on part 2 splitting at the end time marker. Your final selection will be part 1 of the first part 2, if that makes sense. I tried this and a 3.5 minute extract was just 25MB. But if you don’t have a Mac you can at least get it down to just a chapter with HandBrake.
I haven’t yet tried clipping VCDs because I don’t have any samples here at the moment to try but I will try soon as I know we also have lots of things in that format. Also there must be other software out there that can do a better job with the subtitles, but probably not free software.
Finally, I watched the completed AVI files with VLC, a free* video viewing program for Mac and Windows. Other players like Quicktime and Windows Media Player would probably play them as well.
I hope this is helpful for you! Also, don’t forget about existing short videos like video podcasts or youtube videos that can be used for ESL lessons. These days it is possible to download videos from YouTube and keep them on your laptop in case you are teaching in an internet-free-zone. I do this with a mac widget called MyTube (free!*) but I’m sure there are other applications for windows that do this too.
*I’m sure all the people that provide this terrific free software would love a donation if you feel so inclined.