You’ve got an H.264-based MOV file that you want to use for Flash production, but it won’t load into Flash or Flash Catalyst. Can you simply change the extension from MOV to F4V? If you’re encoding the file, should you choose None, Fast Start or Fast Start – Compressed Header when producing for progressive download. Read on for the answers …

This article compares H.264 to WebM, Google’s implementation of the VP8 codec, using three variables (encoding time, compressed quality, and CPU requirements) for playback on three personal computers. Here’s the CliffsNotes version of the results: Using Sorenson Squeeze to produce both H.264 and WebM, the latter definitely took longer, but there are techniques that you can use to reduce the …

H.264 is the most widely used codec today, whether for streaming via Flash or Silverlight or for the Apple iPod, iPhone, and iPad product lines. If you’ve worked with H.264 before, the format is old hat for you. But if you’re cutting over from VP6 or Windows Media or expanding distribution to H.264-compatible devices, you’re faced with a learning curve. …