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AC3 decoding support (Nero's decoder without DRC/dialnorm).This was a total re-write of eac3to with many enhancements and bug fixes as follows: As well, it was determined that eac3to doesn't work with Nero 8 requiring Nero 7 if you want to do TrueHD and E-AC3 decoding with eac3to. In addition to improvements to Os speaker settings and detection of 5.1 channel output when 6.1 expected, eac3to now always uses the Sonic Audio Decoder by default for DTS decoding. On October 3, 2007, eac3to v1.22 was released. However, I just found it cleaner to have 16bit TrueHD tracks encoded in 16bit FLAC instead of 24bit FLAC. This was not really necessary, as it was determined that the space saving when encoding in FLAC was only about 0.1 percent. If there was only 16 bits of information in the raw 24 bit file, then eac3to strips the zero bytes and reduces the raw file to 16 bit. As most DTS-HD from HD DVD and all DTS-HD from BluRay are lossless it made sense to convert them to FLAC as well.įor TrueHD decoding eac3to was programmed to check, after decoding, whether the decoded data contained only 16 bits of information or more than that.

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“The TrueHD decoding is now perfect for all HD DVD and Blu-Ray 5.1 TrueHD tracks when using the latest eac3to version and Nero 7 !!”Īs well, full DTS-HD decoding support was now available for users of eac3to by using the Sonic Audio Decoder.”Īt this point in time it was also determined that 'DTS-HD Master Audio' decoding should work bit perfectly so re-encoding to FLAC was determined to make a lot of sense and 'DTS-HD High Resolution' decoding worked mostly fine so re-encoding to FLAC also made sense even if it would greatly increase file size. Vi)Attempting to deal with audio sync and delay issuesīy September 29, 2007, the 18th version of eac3to v1.18 was made available and I was pleased to announce as “Big News” that: V) Determination of problems with Surcode for DTS decoding which would work for some people and not for others and failed to work automatically in eac3to

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Dynamic Range Control which according to Nero is required to fulfil the license with Dolby Digital, Dialog Normalization issues etc. Iv)Identifying common problems with respect to each decoder i.e. 4.3, testing with Audacity indicates the application of DRC by Sonic decoders on EAC audio files leading to conclusion that only the Nero decoder should be used to decode EAC3 Iii)Testing Sonic Versions 4.2 and 4.3 as to “discontinuities” errors in Sonic v. Ii)Determining best decoder to use for MLP, AC3 BluRay audio

I)TrueHD decoding issues: Problems with Sonic’s audio decoder crashing necessitating a switch to Nero, as well as determining that we could only use Nero 7 as the DirectShow filters in Nero 8 would not work with eac3to as well as the need to purchase the HD-DVD/Blu-Ray plugin for TrueHD decoding with Nero The contribution of their time, advice and knowledge in performing testing was invaluable to the development of eac3to. In this development and testing period, I was very thankful to have the assistance of xkodi and A.Crowley for their technical knowledge and assistance with the testing required to determine the best decoders/encoders to use with eac3to and the limitations with respect to each. The first 5 months of development of eac3to were spent testing filters, available programs (both freeware and commercial), with the ultimate goal being the determination of the tools and development of methods of decoding and encoding to obtain the best “quality” audio extracted from HD DVD and BluRay audio sources. There is no doubt that eac3to has developed substantially since its introduction in May 2007.