3683 Views 4 Replies Latest reply: Dec 29, 2007 4:26 AM by HunkyPunky
I realize that I probably need more processor speed, but I still do not understand something. How does streaming video play so beautifully on QuickTime. When I open up QuickTime and play one of the movie trailers that is advertised, (for example, National Treasure), it plays beautifully on the largest screen size they offer. What is the difference between the 2 videos? Is there anyway to convert my videos to the format of the streaming videos?
The video Codec while playing my digital videos from my digital camera says MPEG-4, Apple MPEG4 Decompressor, 640 x 480, Millions
μ-Law 2:1, Mono, 16.000 kHz.
I know this may sound extremely ignorant, but I have asked a lot of people locally that should be in the know and they had no definitive answer to this.
Thanks for any response.
MPEG-4 format should be easier to play on older machines than H.264 video codec.
Since you can view the Apple trailers (nearly all are H.264) your issues are related to the data rate used by your camera.
H.264 throws more emphasis on CPU speed where MPEG-4 throws it at the graphics card. A G4 should have lots of trouble playing HD content above 720 but no trouble with MPEG-4. What is your CPU speed? What kind of graphics card?
Use the Apple System Profiler (under the Apple menu) to learn more "About This Mac".
The CPU speed on the computer in question is a Macintosh Power Mac G4 with a 450 MHZ processor. The graphics card is an ATI Radeon 9200 - 128 MB. The Bus Speed is 100 MHZ and the L2 Cache is 1 MB. I don't think that it is processor speed because I have 3 more Macs at work. One is a Power Mac G4 with a 1 GHZ processor and a 64 MG graphics card and it plays these videos just like my slower G4, (herky-jerky). I also have an eMac with a 1 GHZ processor and a 34 MG graphics card and it plays the videos in question perfectly. Go figure!
As I stated before, the computer in question plays streaming video perfectly, but the video from my new digital camera plays in a herky-jerky fashion. The video is recorded at 30 frames per second, but my computer will not play them any faster than about 25 and it varies. The video is MPEG4 and is 640 x 480.
Any advice is appreciated.