这个选项被去掉了
2010-05-28 Moritz Bunkus
* mkvextract: feature removal: Removed support for extracting FLAC tracks into Ogg FLAC files. Instead they're always written into raw FLAC files. The option "--no-ogg" has been removed as well.
* mkvmerge: feature removal: Removed support for the FLAC library older than v1.1.1.
* mkvmerge: bug fix: Fixed support for reading FLAC tracks from Ogg files following the FLAC-in-Ogg-mapping established with FLAC v1.1.1. Fix for bug 488.