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AC3 Filter 2.6b

AC3Filter is high quality freeware DirectShow audio decoder and processor filter used to decode audio tracks in movies (DVD, MPEG4 and others). It has a priority on wide functionality and convenient settings.

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

Features of AC3 Filter 2.6:

• Playback:
- Watch movies with AC3 and DTS audio tracks
- Listen multi-channel (AC3/DTS) AudioCD
- Playback WAV files with AC3/DTS content, ripped from multi-channel AudioCD without any conversion of these files.
- Playback raw .AC3 and DTS files (with help of AC3File filter)
• Process:
- Up-mix any audio track (even plain stereo) up to 6 channels
- Down-mix any audio track to any number of channels (to match your speaker configuration)
- If you have an external Dolby ProLogic decoder, you may use ProLogic down-mix to help DPL decoder to extract surround information
- Watch movies under poor hearing conditions (noisy environment, weak speakers, ...)
- Decrease dynamic range to watch movies at night
- Apply time shift to the audio track to synchronize audio with video.
- Adjust gain of every input/output channel independently to compensate loudness differences
- Adjust time delays for every channel to compensate different distances to loudspeakers.
• SPDIF:
- Passthrough AC3 and DTS over SPDIF without any change to external decoder
- Encode any audio to AC3 and transmit it over SPDIF
- USB sound cards supported

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.

Changes in AC3 Filter 2.6b:

- FFMPEG updated to v1.1.4
- Use FFMPEG for AAC decoding (should be less crashes because faad bugs).
- SPDIF/AC3 encoder: encode 5.1 with back channels (used by flac for instance) like 5.1 with side channels (standard for ac3).
- Serbian language added (thanks to Rancher).
- Languages updated: Basque (thanks to Xabier Aramendi), Chineese (thanks to PoYang).
- Bug fixed: some languages was reset to english after restart.
- Installer: /noicons option works now

Changes in AC3 Filter 1.46:

- AC3 encoder bitrate is now adjustable
- Korean translation added (thanks to starcodec)
- Upmixing of Dolby Surround files works now (thanks to Stefan Schott)
- MPEG Audio Joint stereo playback fixed (thanks to Daniel Bechter)
- Problem with decimal point in mixing matrix on some non-english Windows (thanks to Marcin Hencz)

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