Parse flv file error

[beyondzzk]

Get an error during parse flv file, but this file can be parse by other tools, error info as below:
E:\video\project\trunk\tool\flvtools>flvtool2.exe -P C:\Users\beyond\Desktop\tmp\mony.flv
ERROR: EOFError
ERROR: flv/amf_string_buffer.rb:37:in read' ERROR: flv/video_tag.rb:80:inread_header'
ERROR: flv/video_tag.rb:47:in after_initialize' ERROR: flv/tag.rb:56:ininitialize'
ERROR: flv/stream.rb:449:in new' ERROR: flv/stream.rb:449:inread_tags'
ERROR: flv/stream.rb:58:in initialize' ERROR: flvtool2/base.rb:272:innew'
ERROR: flvtool2/base.rb:272:in open_stream' ERROR: flvtool2/base.rb:238:inprocess_files'
ERROR: flvtool2/base.rb:225:in each' ERROR: flvtool2/base.rb:225:inprocess_files'
ERROR: flvtool2/base.rb:44:in execute!' ERROR: flvtool2.rb:168:inexecute!'
ERROR: flvtool2.rb:228