High quality freeware DirectShow audio decoder and processor filter used to decode audio tracks in movies.

AC3 Filter can decode following audio formats: AC3 / DTS / MPEG Audio. It also supports multi*channel and digital (SPDIF) outputs.

Features:

• Decode AC3/DTS/MPEG Audio Layer I/II formats
• MPEG1/2 PES demultiplex (for DVD support)
• PES/LPCM format support
• AVI/AC3, AVI/DTS, WAV/AC3 and WAV/DTS support
• AC3/DTS/MPEG Audio SPDIF passthrough support
• AC3 encode to output any multichannel source to SPDIF
• Detailed input bitstream format information
• Automatic Gain Control
• Dynamic Range Compression
• Online output configuraion change
• Upmix from any stereo source to 3*6 channels
• Downmix to DolbySurround/ProLogic/ProLogic2
• Input/output levels indication
• Per*channel gain for all input/output channels
• Per*channel delays
• Direct access to mixing matrix

Tags:

• Audio Codec Tag 2000 may be requested when AC3 Filter is missing.
• Audio Codec Tag 8192 may be requested when AC3 Filter is missing.
• It also solves AC3 DVM codec missing, reported by AVIcodec utility.

What's New:

• 8 channels support
• PCM Double output support
• DTS-MA (core only), AAC, EAC3, FLAC, MP3 decoding support
• Completely new bass redirection:
• better filtering (4th order Linkwitz-Riley)
• option to redirect bass to front speakers
• Single icon per application
• Online help
• Crash report
• Set filter language from the installer
• Translations: Portuguese, Turkish, Dutch, Bulgarian, Ukrainian