dataset_code/test.sh

#!/bin/bash
input_file="/mnt/bn/yufan-dev-my/ysh/Ckpts/SpatialVID/e6d91e1b-e366-5fa9-aef4-9769eb0bf631.mp4"
output_file="output_trimmed.mp4"

# 获取总帧数
total_frames=$(ffprobe -v quiet -select_streams v:0 -count_frames -show_entries stream=nb_frames -of csv=p=0 "$input_file")

# 计算要保留的帧数
keep_frames=$((total_frames - 19))

# 执行裁剪
ffmpeg -i "$input_file" -vf "select='lt(n,$keep_frames)'" -vsync 0 -c:a copy "$output_file"

echo "处理完成: $output_file"
echo "原始帧数: $total_frames"
echo "保留帧数: $keep_frames"