.dvpl is a new file format that is first seen used in the World of Tanks Blitz Client for Chinese Server, and now it's used on all known clients, except files that are contained within Android apks.
DVPL Specification:
Starts with stream of Byte data, can be compressed or uncompressed.
The last 20 bytes in DVPL files are in the following format:
UINT32LE input size in Byte
UINT32LE compressed block size in Byte
UINT32LE compressed block crc32
UINT32LE compression Type
0: no compression (format used in all uncompressed .dvpl files from SmartDLC)
1: LZ4 (not observed but handled by this decompressor)
2: LZ4_HC (format used in all compressed .dvpl files from SmartDLC)
3: RFC1951 (not implemented in this decompressor since it's not observed)
32-bit Magic Number represents "DVPL" literals in utf8 encoding, encoded in big-Endian.