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The authors propose BLFS (Block Link File System) supporting fast editing/writing for large-sized multimedia files. In the BLFS, when large-scale multimedia files are stored and edited, there is no data I/O but only modification of the metadata. Additionally, by sharing data blocks between multimedia files, they can save disk space. The BLFS was implemented in a Linux environment by modifying Ext3, and validated by applying the Linux multimedia file-editing tool 'Avidemux'. Multimedia devices, such as smart TV, and digital camera record, store, and play multimedia files using a PVR (Personal Video Recorder) function.
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