Test an unsupported setup
Aim
To test the quality of MediaRecorder videos with an unsupported camera or computer.
Background
In an unsupported setup the following problems may occur:
- Video frames are dropped, which gives an incorrect video length.
- The audio and video are not synchronous.
- Two or more video streams are not synchronous.
Procedure
- Set a timer display running on a computer monitor (preferably with both digital and analog display) and play music (not on the same computer as MediaRecorder). Make sure no background programs are running on the computer.
- Make a recording in the normal way. Remember to plug in your microphone if you will be using audio.
- After the normal maximum recording time, give an audio and visual cue (e.g. click your fingers) and stop the recording
- Check the recording length in MediaInfo and number of frames in GSpot. Use the frame rate to determine if any frames are dropped.
See Tools for troubleshooting - Go to the moment where you gave the cue and check if the audio and video are in sync, and if multiple videos are in sync.
Note that a small error is not necessarily a problem (and is normal); it depends entirely on the accuracy with which the audio and video need to be scored.