Showing posts with label audio editing. Show all posts
Showing posts with label audio editing. Show all posts

Jun 24, 2008

Tips : Editing Your Podcast

After you've transferred your video to your computer, you need to tidy up the rough edges of your video production and turn your podcast into a masterpiece. Well, we can hope, can't we? You should edit with an eye on three things: content, quality, and convenience.

First and foremost, you want your podcast to have good content from start to finish. If you are interviewing a guest for your podcast, you probably had a long list of questions to ask. When you're reviewing your footage, try to keep your distance from the material, and only keep what works best. Of course, some guests may be fantastic, and you'll want to keep every syllable they utter. Often, however, you'll find that a few questions just didn't go anywhere or didn't reveal anything new (see the "Ask the Right Questions" side bar). If so, edit it out. With a few nimble edits, the pacing of a show can change dramatically, turning a mediocre show into a great show.

Keep edits short and sharp
When you're editing, most edit platforms offer a number of transition options for you to choose from. In general, anything other than a quick cross fade (also known as a dissolve) should be avoided, for a couple of key reasons. First, if you watch closely, crazy transitions are almost never used on television or in film. Over-the-top transitions detract from the story line and call way too much attention to themselves. For this reason, they're a dead giveaway that an amateur is at the controls. Second, there's a technological reason why you shouldn't use complicated transitions. They are incredibly difficult to encode. If you're encoding for a broadband audience, the bit rates you use simply aren't capable of encoding that much motion efficiently. You'll either end up with a transition that looks like mud, or you'll be forced to encode your podcast at a higher bit rate, which means a larger file, a longer download for your audience, and a bigger bandwidth bill at the end of the month.

Cutaways
Cutaways are small pieces of film that you can use when editing video, often used to cover up an edit. Editing video can be tricky because people can see when and where you edit your video. You can't just cut out the middle of an interview without some clever editing, or people will notice that there's something missing. This is where cutaways can really help.

Imagine an interview on a conference floor, where someone rudely interrupts your guest while she's answering a question. Unless the interruption was by someone important (or it was really funny), you probably want to edit it out of the podcast. If you just cut it out, there will be a sudden jump in the video (known as a "jump cut" in the industry). You have to disguise your cut using a cutaway.

Here's how it works: When the interruption occurs, cut to some b-roll, like a shot of you nodding in agreement or a shot of the conference room floor. Let the audio of your guest's response continue to play underneath the b-roll. Then, you can cut from the b-roll with the guest audio underneath it to an appropriate location after the interruption occurred. The jump cut will be hidden by the b-roll, and your secret will be safe. This editing approach is illustrated in Figure 1.


Figure 1: Use cutaways to disguise your edits.


Tip Provided you have plenty of cutaway material, it's often easiest to edit your story together by editing to your audio and then covering any awkward transitions with cutaway or B-roll material.

Mar 4, 2008

Audio editing software (Podcast)

Audio-editing software

To get the most out of your podcast, you're going to need audio-editing software. Audio-editing software gives you the power to turn your raw podcast shows into things of beauty. Plenty of audio editors exist, from freeware all the way to specialized recording platforms for recording music. All are capable of basic editing operations such as cut and paste, as well as more advanced forms of signal optimization.

This list of some of the most common full-featured stereo audio-editing programs is by no means meant to be a definitive list:

- Audacity (Windows, Mac, Linux): Audacity is a free, open-source audio editor that runs on just about every platform. What's not to love?

- Peak (Mac): Berkeley Integrated Audio Software's flagship stereo audio editor comes in a number of versions at different price points.

- Sound Forge (Windows): Now a part of the Sony family, Sound Forge comes in a number of different versions at different price points.

- Audition (Windows): Formerly CoolEdit, Audition is now Adobe's flagship audio editor, offering all the quality you'd expect from an Adobe product.

Creating a podcast involves more than just audio editing. Some audio-editing programs include additional podcast production tools, such as built-in file transfer (FTP) and Real Simple Syndication (RSS) support. Not all of the programs listed here include sophisticated audio processing. They're meant to be simple, easy-to-use tools that get the job done as quickly as possible.

- GarageBand (Mac): Originally intended as a very simple multi-track audio-editing program, GarageBand now includes just about everything you need to make a podcast. One problem, though, is that it does not export MP3 files; it only exports AAC encoded files, which is fine for podcasts targeted at iPods, but not for other portable music players.

- ePodcast Producer (Windows): This editor includes many handy podcast production features, including a teleprompter, sound effects management, and a built-in facility for recording Voice-over IP (VoIP) phone conversations such as Skype.

- Propaganda (Windows): This editor uses an interesting model where multiple clips are cued up to produce your podcast, much like a digital cartridge system used at radio stations.

- Podcast Station (Windows): This editor is similar to Propaganda in that you assemble your podcasts from lists of clips. Simple insert editing and unlimited undo make this a great platform for the podcaster who enjoys winging it. The Web site includes lots of tutorial videos to get you up and running quickly.

If you're planning on creating video podcasts, you should be aware that many video-editing software platforms also include audio editing and processing. Your decision on which audio-editing platform to buy will be based on the operating system you're working on, your familiarity with audio-editing software, and how much functionality you want in a single tool. You may want to create a few podcasts on a shoestring budget using open-source tools and see what works best for you before investing your hard-earned cash.