by Steven Hacker
600 divided by the number of minutes.
Then subtract 1.6 if you are using PCM audio or .2 if you are using AC3 audio.
For example- if your video is 75 minutes:
600/75-1.6= 6.4 or 6400 kbits/sec (PCM audio)
600/75-.2= 7.8 or 7800 kbits/sec (AC3 audio)
These equations work fine for me and leave enough room for menus.
The airlines naturally worry about battery leakage, fire or explosion. Bad enough on land, but potentially disastrous on an airplane. Last year, the FAA said that lithium-ion batteries were sparking airplane fires once every 10 days on average. The International Air Transport Association is now instructing its 300 airline members to restrict lithium-powered smart bags. […]Read More