Mobile and PC Multimedia Applications

Frequently Asked Questions

Check here first to find answers to your questions. Usually, the question you want to ask has already been answered. If you don't find it here, send me an email at jaime@valenzj.com

Q: Where do I get the VidCalc iPhone* App?
A: Using your iPhone*, press the App Store* icon. Search for VidCalc. Or look for it under the Utilities category.

Q: What does the Video Calculator do?
A: It lets you easily find video file sizes given bitrates and duration. It also lets you figure out what video and audio encoding parameters to use for a given output file size. And you can find aspect ratios and dimensions of videos.

Q: How can I find out how big my video file will be?
A: Select the BitrateCalc Tab Button at the bottom of the screen. Enter the video duration, the video bitr ate and the audio bit rate you are planning to use. Leave the File Size field empty and touch the Calculate button.

Q: How do I make the output video file size no bigger than 100 MB ?
A: Select the BitrateCalc Tab Button at the bottom of the screen. enter the 100 (or any desired file size) in the File Size field. Enter the video duration and a recommended 96 in the audio bit rate field. Touch the Calculate button. The desired video bit rate appears in the Video Bitrate field. Enter both audio and video bit rates in your video encoding software.

Q: How can I tell what aspect ratio my video is?
A: Select the AspectCalc Tab Button at the bottom of the screen. Enter the Width and the Height of the video. Touch the Calculate button and the aspect ratio will be displayed in the Aspect Ratio field.

Q: How do I keep the aspect ratio constant as I resize my video?
A: Select the AspectCalc Tab Button at the bottom of the screen. Enter the original video's width and height and touch Calculate. Read the aspect ratio field. If you know the desired width, enter it. Touch and clear the Height field and touch Calculate to get the desired height. If you know the desired height, enter it and clear the Width field. Touch the Calculate button to get the desired width.