I'm working on an interface for uploading videos to a website and currently we display the average speed for the upload to the user, as well an ETA derived from this average rate.
I was wondering if it is perhaps more useful to display the current speed of the upload instead of the average speed.
1) I think given we already display the ETA to the user, the average speed is redundant information. Same information, just a different metric.
2) One specific instance where I believe this would be more useful information is in the case that the user has a high initial upload speed, say 4mbps, for several minutes that then drops down to dialup speeds, 56kbps. The average speed displayed would slowly start to go down (given the weight of 4 minutes at a higher speed), giving no indication that the user's upload rate had dropped greatly.
Worth mentioning, the original argument for using the average speed over the current speed is that the current speed can be too "jumpy". I see this as both a blessing, in the case of the 4mbps drops to 56kbps and the user being aware of the change, as well as a curse, the "jumpiness" of a normal connection.
I'm interested to hear others thoughts on this. Thanks!