Test an unsupported setup

Aim

To test the quality of MediaRecorder videos with an unsupported camera or computer.

Background

InWhen using an unsupported setupsetup, the following problems may occur:

• Video frames are dropped, whichresulting gives anin incorrect video length.lengths.
• The audio and video are not synchronous.
• Two or more video streams are not synchronous.

Procedure

1. 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.
2. Make a recording in the normal way. Remember to plug in your microphone if you willplan beto usinguse audio.
3. After the normal maximum recording time, give an audio and visual cue (e.g. click your fingers) and stop the recording
4. 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
5. 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 thatWhether a small error (one that normally tends to occur) is notto necessarilybe considered a problem (andor is normal); itnot depends entirely on the required level of accuracy with whichof the audio and video need to be scored.recording.