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To extract the position offset of each frame in an MP4 file using Python, you can use the OpenCV library, which provides a convenient way to handle video files. Below is a Python program that uses OpenCV to read an MP4 file and print the position offset of each frame:
importcv2# Function to capture framesdefframe_capture(video_path):
# Create a VideoCapture objectcap=cv2.VideoCapture(video_path)
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For FLOPs calculations, we follow the derivation from Narayanan, et.al.[13] and only consider the
matrix multiplications (GEMMs) which are the main contributors to the number of floating-point operations. For the attention block, the main contributors to floating-point operations are: key, query,
and value transformation ($6Bs2h^2$ operations), attention matrix computation ($2Bs^2h$ operations), attention over values ($2Bs^2h$ operations), and post-attention linear projection ($2Bsh^2$ operations) where
$B$ is the microbatch size.
For the feed-forward network that increases the hidden size to $4h$ and then reduces it back to $h$, we have $16Bsh^2$ floating-point operations. Summing these together, each transformer layer results in $24Bsh^2 + 4Bs^2h$ FLOPs for the forward pass. The other main contributor to the number of floatingpoint operations is the logits layer in the language model head, which transforms features of dimension $h$ to the vocabulary dimension $v$. The req
Adjusting Jupyter Notebook/IPython's System Shell with %env Magic Command
IPython's system shell has a unique subshell mechanism that sometimes behaves differently from what we expect. However, we can use the %env magic built-in command to change the subshell configuration and adjust the execution environment to meet our needs.
For example, if we're working in an unfamiliar environment where the default terminal is zcsh, but we want to work under our favorite bash, we can type %env SHELL bash at the begining of Jupyter Notebook/IPython script to modify the execution system shell. This execution is valid globally.
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