This tutorial requires QuickTime Pro.
Certain codecs and settings can be used to achieve high quality to perceptually lossless compression at relatively low bit rates. This tutorial is intended to demystify the process.
Prerequisites
- Source:
- Clean source Encode from an uncompressed AVI if possible. This will speed up the process and prevent unnecessary loss in quality because the video does not need to be transcoded.
- High contrast Increasing the source video's contrast can help to keep the bit rate needed to sustain glance losslessness low while being less noticable.
- Avoid grain Decreasing the amount of grain in a video will allow for more efficient compression.
Tutorial
Open the source file in QuickTime Pro and verify that the video is complete and ready to be encoded. From the File menu, select Export.
- Shortcut: Control-E
In the Save exported file as: dialog, make sure Movie to QuickTime Movie is selected in the Export: field. Click Options.
Make sure that both Video and Sound are checked. You may also want to check Prepare for Internet Streaming. Now, choose Settings... in the Video section.
In the Standard Video Compression Settings dialog, select Sorenson Video 3 or H.264 as the Compression Type. Set the Motion section of this dialog to the following settings:
Frame Rate: Current Key Frames: Every X frames Frame Reordering: Checked
- Tip If possible, export to a different hard disk. This will bring increase encoding speed
