Nero7 uses Dolby's reference code and therefore should offer better sound quality over Libav / ffmpeg. As a result Nero7 is the default decoder for AC3 format.
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Nero7 uses Dolby's reference code and therefore should offer better sound quality over Libav / ffmpeg. Libav / ffmpeg would be the only one that can decode 7.1 channel audio tracks (this feature is not yet implemented though, as the decoder is still under development).Nero7 is the default decoder for E-AC3 format. |
Both decode bit perfect. Nero7 is limited to 5.1 while Libav / ffmpeg can output up to 7.1 channels. However Libav is unable to decode files with mixed sampling rates (i.e. 96 kHz for Lf-Rf-C and 48 kHz for LFE-Ls-Rs). Libav / ffmpeg is chosen as the default decoder for TrueHD. |
Nero7 and Libav / ffmpeg are limited to 5.1 channel decoding. Sonic may or may not output 6.1 channels depending on the source track.ArcSoft doesn't have any limitation, therefore it is the default decoder used. |
Both decode bit-perfect. Sonic is limited to 5.1 or 6.1 channels depending on the source track, while ArcSoft can output up to 7.1 channels. As a result ArcSoft is the default decoder for DTS-HD. |
eac3to input.file+input.file.2output.file-options
input.file
~ It's the file to be processed. eac3to can accept various audio formats like RAW, (L)PCM, WAV (PCM only), W64 (like WAV without the 4 GB limit), RF64 (like W64), AC3, E-AC3, DTS, DTS-ES, DTS-96/24, DTS-HD Hi-Res, DTS-HD Master Audio, MLP, TrueHD, TrueHD/AC3, FLAC, video formats like VC-1, H.264, MPEG-2.+input.file.2
~ Multiple input files (of the same format) are accepted. This is useful when the input file is split among several parts. Use the + symbol to add more.output.file
~ This is the output file that eac3to will create. It could be an audio format like RAW, (L)PCM, WAV (PCM only), WAVs (multiple mono WAV files, PCM only), W64, RF64, AC3, DTS, FLAC, video format like VC-1, H.264, MPEG-2 or Matroska (MKV) container. eac3to can also output audio (only) data to stdout for further processing by other applications.-options
~ Here you can set the options that tell eac3to how to operate. Not all of them are applicable to all input / output formats. If none set, the default is used when necessary. When using an audio or video file as input, the following options are available:Switch | Input file must be | Output file must be | Use to... |
---|---|---|---|
-192, -224, -384, -448, -640 | any audio format | AC3 | set a bitrate of 192..448 (default for stereo)..640 (default for 5.1) kb/s for AC3 encoding |
-768, -1536 | any audio format | DTS | set a bitrate of '768' or '1536' (default value) kbps for DTS encoding |
-core | DTS-HD or TrueHD | DTS or AC3 | extract the DTS core of a DTS-HD track or the AC3 core of a TrueHD track |
±100ms | any audio format | any audio format | apply a positive or negative delay |
-edit=0:00:00.000,0ms | any audio format | any audio format | loops or removes audio data at the specified runtime |
-silence/-loop | any audio format | any audio format | forces usage of silence (or looping) for audio edits |
+3dB, -3dB | any audio format | any audio format | apply an arbitrary positive or negative audio gain (volume change) |
-normalize | any audio format | any audio format | gain output to 0 dB (2 pass) |
-0,1,2,3,4,5 | any audio format | any audio format | remap channels to the specified order |
-mono | any audio format | any audio format | decode only Center channel (Left if stereo) |
-double7 | any 6.1 audio track | any audio format | upmix 6.1 to 7.1 (duplicate Back Center) |
-down6 | any 6.1 or 7.1 audio track | any audio format | downmix 7 or 8 channels to 6 channels |
-downDpl | any audio format | any audio format | downmix multichannel audio to stereo (Dolby Pro Logic II) |
-downStereo | any audio format | any audio format | downmix multichannel audio to stereo (Simple) |
-phaseShift | any multichannel audio format | any audio format | shift phase of surround channels(when doing stereo downmix) |
-mixlfe | any .1 audio format | any audio format | mix LFE in (when doing stereo downmixing, see here) |
-down16 | any audio format | any audio format | downconvert decoded audio data to 14..23 bit |
-full | any audio format | any audio format | outputs audio as 64-bit floating point PCM |
-simple | any audio format | WAV | use simple header instead WAVE_FORMAT_EXTENSIBLE |
-99mb | any format | any format | stop conversion after reach x MB of input file |
-changeTo24.000 | any format | any format | change source fps to '23.976', '24.000', '25.000', ... |
-23.976/... | any format | any format | define source fps to be '23.976', '24.000', '25.000', ... |
-slowdown | any format | any format | reverse PAL speedup (25.000 -> 24.000/1.001 fps) |
-speedup | any format | any format | apply PAL speedup (24.000/1.001 -> 25.000 fps) |
-resampleTo48000 | any audio format | any audio format | resample audio to '44100' Hz, '48000' Hz, '88200' Hz or '96000' Hz |
-r8brain | any audio format | any audio format | Use r8brain to resample instead default SSRC |
-quality=0.35 | any audio format | M4A / MP4 | Nero AAC encoding quality (0.00=lowest; 1.00=highest) (default: 0.5) |
-decodeHdcd | HDCD source | any audio format | decodes HDCD source track (usually 16 -> 20 bit) |
-8 | LPCM / RAW | any audio format | PCM / RAW file has 1..8 channels |
-8 | DTS / DTS-HD | any audio format | requests that the ArcSoft decoders output 2, 6, 7, or 8 channels of audio, using the decoder's internal mixing |
-16 / -24 | LPCM / RAW | any audio format | PCM / RAW file is '16' or '24' bit |
-little / -big | LPCM / RAW | any audio format | PCM / RAW file is 'little' or 'big' endian |
-48000 | LPCM / RAW | any audio format | PCM / RAW file is '44100' Hz, '48000' Hz, '88200' Hz, '96000' Hz or '192000' Hz |
-override | LPCM / RAW | any audio format | forcefully override LPCM / RAW auto detection with manual values |
-sonic / -nero / -libav / -arcsoft | any compressed audio format | any audio format | force the use of a specific decoder (not recommended) |
-keepDialnorm | AC3, E-AC3, TrueHD, MLP ??? | any audio format | disable dialog normalization removal (not recommended) |
-no2ndpass | turns off 2nd pass processing | ||
-logdts | DTS | display detailed info about DTS track | |
-dontPatchDts | disable 16bit->24bit patching. 16-bit DTS-HD tracks will be dithered from 24 bit to 16 bit by decoder | ||
-keepPulldown | VC-1, H.264, MPEG-2 | same as input or MKV | disable removal of pulldown for MPEG2, h264 and VC-1 tracks (not recommended) |
-skip2 | VC-1, H.264 ??? | same as input ??? or MKV | skips the first 1..99 VC-1 sequence headers |
-seekToIFrames | H.264 | MKV | make all H.264 / AVC 'I' frames seekable |
-check | EVO, M2TS, TS | none | checks if the source EVO, M2TS, TS file is clean |
-test | checks if the external filters are installed & working properly | ||
-progressnumbers | outputs one new line to the command window for every progress (for GUIs). | ||
-lowPriority | moves processing to background/idle priority | ||
-shutdown | automatically shutdown the PC after processing is done | ||
-log='filename.txt' | Writes output log to specified filename |
eac3to input.ac3 output.ac3 -384
eac3to input.eac3 output.dts
eac3to input.dtshd output.flac
eac3to input.dts output.ac3 -libav
eac3to input.thd output.ac3 -nero
eac3to input.mlp output.stdout -down16 -resampleTo44100
eac3to input.dtshd output.dts -core
eac3to input.thd output.ac3 -core
eac3to input.eac3 output.eac3 +178ms
eac3to input.eac3 output.ac3 -slowdown -192
eac3to input.pcm output.wavs
eac3to input.pcm output.wavs -override -16 -48000 -6 -little
eac3to input.pcm output.ac3 -down6
eac3to input.vc1 output.mkv
eac3to input.h264 output.mkv -keeppulldown
eac3to input.file+input.file.2trackno: output.file-optionstrackno: output.file-options
input.file
~ Container inputs can only be in EVO, M2TS, TS and VOB format.+input.file.2
~ Multiple input files (of the same format) are accepted. This is useful when the input file is split among several parts (e.g. a set of 2 main movie EVO files in a HD DVD or 2 or more M2TS parts of a seamless branching Blu-ray Disc). Use the + symbol to add more. With Blu-ray Disc we can use also like input the .mpls files in PLAYLIST folder.output.file
~ This is the output file that eac3to will create. It could be an audio format like RAW, (L)PCM, WAV (PCM only), WAVs (multiple mono WAV files, PCM only), W64, RF64, AC3, DTS, FLAC, video format like VC-1, H.264, MPEG-2 or Matroska (MKV) container. eac3to can also output audio (only) data to stdout for further processing by other applications.trackno:
~ It applies only to container source files and refers to the tracks/streams inside them.-options
~ Here you can set the options that tell eac3to how to operate. Not all of them are applicable to all input / output formats. If none set, the default is used when necessary.Switch | Input file must be | Output file must be | Use to... |
---|---|---|---|
-demux | EVO, VOB, M2TS, TS (any container) | not applicable | demux main (1st) video track and all audio tracks |
eac3to FEATURE_1.EVO+FEATURE_2.EVO
we get:eac3to eac3to FEATURE_1.EVO+FEATURE_2.EVO 3: audio.dts
eac3to feature1.evo+feature2.evo -demux
eac3to 00001.m2ts 2: video.h264
eac3to 00001.m2ts+00002.m2ts+00003.m2ts 2: c:foldervideo.vc1 3: c:folderaudio1.thd 5: d:folder1folder2audio2.eac3
eac3to input.evo output.mkv
eac3to feature1.evo+feature2.evo 2: video.mkv 4: audio.flac
eac3to feature1.evo+feature2.evo 3: video.mkv -skip3 4: audio1.flac -down16 5: audio2.dts -768 -libav
eac3to 'G:Galapagos HD DVD 1080p VC-1 DD 2.0'
the title playlist of the disc is generated.eac3to 'G:Galapagos HD DVD 1080p VC-1 DD 2.0' 3)
and the stream/track list of the specific title is generated.eac3to 'G:Galapagos HD DVD 1080p VC-1 DD 2.0' 3) 2: galapagos.ep2.chapters.txt 3: galapagos.ep2.mkv 4: galapagos.ep2.ac3 5: galapagos.ep2.sup
eac3to 'F:Rambo IV 2008 Blu-ray 1080p H.264 DTS-HD MA 7.1'
the title playlist of the disc is generated.eac3to 'F:Rambo IV 2008 Blu-ray 1080p H.264 DTS-HD MA 7.1' 1)
and the stream/track list of the specific title is generated (note: not always the title with the longer runtime is the main movie).eac3to 'F:Rambo IV 2008 Blu-ray 1080p H.264 DTS-HD MA 7.1' 1) 1: c:ramborambo.chapters.txt 2: c:ramborambo.mkv 4: c:ramborambo.flac 4: c:ramborambo.dts -core 5: c:ramborambo.comm.ac3