The same video may also be edited, encoded at different frame rate (e.g., 3-2 pull down), or subjected to frame dropping during the video compression process.
The frame drop is realized by a factor of 2 in the encoder side which encodes all the macroblocks as the SKIP mode in the dropped frame.
As shown in Table 3, we found that the PSNRs for interpolated frame drop as the input rate decreases.
It can also be seen to apply to close but semi-isolated covers or panels surrounding diesel engine frames, drop hammer tups and the like.
Our proposed method overcomes frame drop by setting a delay threshold as a buffer during DVFS operation to overcome the estimation error.
Empirically, a subjective quality degradation caused by a frame drop is more serious than that caused by spatial down-sampling at low bitrate.
The second simulation compares energy consumption while a method of frame drop prevention, which is generated by the estimation error of DVFS to support QoE, is used.
On the other hand, since the conventional methods such as those of [2, 3] do not consider delay, they can cause frame drop as a result of estimation errors.
In this paper, we propose an estimation method that requires simple profilers or calculations for complexity estimation as well as a DVFS method that prevents frame drop and buffering, which is in contrast with the methods proposed in [2, 3].
This model increases complexity due to the added extra profiler and does not consider the frame drop or buffering phenomenon, which is generated due to an estimation error that may occur because of the jittering.
The video player application is based on the Gstreamer framework and has a socket interface, which allows the handover manager to query its current buffer level and QoS statistics such as frame drop rate.
