combines the strengths of Convolutional Neural
Networks (CNNs) and Recurrent Neural Networks
(RNNs), specifically Long Short-Term Memory
(LSTM) networks, to effectively analyze both spatial
and temporal features inherent in video data.
MobileNet, a compact and effective CNN
architecture, is skilled at extracting spatial features
from individual video frames. It does this by
capturing intricate details like facial textures, lighting
conditions, and subtle inconsistencies that could
indicate manipulation. Its design ensures rapid
processing, making it particularly suitable for
realtime applications where computational resources
and latency are critical considerations.
MobileNet’s ability to adapt to the particular
nuances of deepfake detection by making use of
pretrained weights obtained through transfer learning
improves both its accuracy and its generalizability to
a variety of datasets. Complementing this, LSTM
networks are designed to capture temporal
dependencies by analyzing sequences of data over
time. LSTMs process the sequential MobileNet
frames in the context of video analysis, allowing for
the detection of temporal inconsistencies and
unnatural transitions that are frequently found in
deepfake videos. The hybrid model is able to
thoroughly evaluate the authenticity of video content
thanks to this dualstage processing, which begins
with the extraction of spatial features and continues
with the analysis of temporal patterns.
The efficacy of this hybrid strategy has been
demonstrated by empirical research. For instance,
research integrating CNN and LSTM architectures
achieved a precision of 98.21 percentage on
opensource datasets such as the DeepFake Detection
Challenge (DFDC) and Ciplab datasets, indicating a
limited false-positive rate and robust detection
capabilities. Another study leveraging optical flow
features within a hybrid CNNLSTM framework
reported an accuracy of 66.26 percentage on the
DFDC dataset, further validating the model’s
effectiveness in discerning deepfake content. The
adaptability of the hybrid MobileNet-LSTM model to
diverse datasets underscores its robustness and
potential for widespread application. By training on a
variety of authentic and manipulated media, the
model learns to generalize across different scenarios,
enhancing its resilience against various deepfake
generation techniques. In an environment where
deepfake techniques are constantly evolving, posing
new challenges to detection systems, this adaptability
is essential. The model’s lightweight architecture
makes it easier to use in practice to perform realtime
inference, which is a crucial requirement for
applications like live video streaming, social media
monitoring, and digital forensics.
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