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18th December 2012, 22:08 | #11961 | Link | |
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Quote:
Code:
eac3to v3.24 command line: "C:\Program Files (x86)\AVTools\eac3to\eac3to.exe" "I:\TLOTR\FOTR Part 1\BDMV\" 1) 3: D:\Source\TLOTR_EE\fotr1_eng.w64 -down16 -down6 -progressnumbers -log="fotr1_eng.log" ------------------------------------------------------------------------------ M2TS, 1 video track, 7 audio tracks, 24 subtitle tracks, 1:45:43, 24p /1.001 1: Chapters, 27 chapters 2: h264/AVC, 1080p24 /1.001 (16:9) 3: DTS Master Audio, English, 6.1 channels, 24 bits, 48kHz (core: DTS-ES, 6.1 channels, 24 bits, 1509kbps, 48kHz) 4: AC3 EX, Polish, 5.1 channels, 640kbps, 48kHz, dialnorm: -27dB 5: AC3 EX, Thai, 5.1 channels, 640kbps, 48kHz, dialnorm: -27dB 6: AC3 Surround, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB 7: AC3 Surround, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB 8: AC3 Surround, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB 9: AC3 Surround, English, 2.0 channels, 192kbps, 48kHz, dialnorm: -27dB 10: Subtitle (PGS), English 11: Subtitle (PGS), Chinese 12: Subtitle (PGS), Korean 13: Subtitle (PGS), Chinese 14: Subtitle (PGS), Czech 15: Subtitle (PGS), Hebrew 16: Subtitle (PGS), Polish 17: Subtitle (PGS), Romanian 18: Subtitle (PGS), Thai 19: Subtitle (PGS), English 20: Subtitle (PGS), Chinese 21: Subtitle (PGS), Korean 22: Subtitle (PGS), English 23: Subtitle (PGS), Chinese 24: Subtitle (PGS), Korean 25: Subtitle (PGS), English 26: Subtitle (PGS), Chinese 27: Subtitle (PGS), Korean 28: Subtitle (PGS), English 29: Subtitle (PGS), Chinese 30: Subtitle (PGS), Korean 31: Subtitle (PGS), English 32: Subtitle (PGS), Polish 33: Subtitle (PGS), Thai [a03] Extracting audio track number 3... [a03] Remapping channels... [a03] Decoding with ArcSoft DTS Decoder... [a03] Mixing surround channels... [a03] Reducing depth from 24 to 16 bits... [a03] Writing W64... [a03] Creating file "D:\Source\TLOTR_EE\fotr1_eng.w64"... [a03] The original audio track has a constant bit depth of 24 bits. [a03] The processed audio track has a constant bit depth of 16 bits. Video track 2 contains 152090 frames. eac3to processing took 8 minutes, 17 seconds. Done. |
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19th December 2012, 01:33 | #11963 | Link |
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6.1 channel order is not defined in FLAC, so there is no "proper way" to do it.
http://flac.sourceforge.net/format.html#frame_header |
19th December 2012, 02:16 | #11964 | Link | |
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More interested in getting the correct 7 channel wavs from a DTS-ES 5.1 Matrix.
But the reference FLAC library does the following since FLAC 1.1.3 (27-Nov-2006): Quote:
Last edited by Brom; 19th December 2012 at 02:19. |
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21st December 2012, 16:11 | #11965 | Link | ||
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Quote:
EDIT Quote:
Code:
eac3to "input" 1:"output.wavs" -7 Last edited by DarkSpace; 26th December 2012 at 02:39. |
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26th December 2012, 12:53 | #11967 | Link |
German doom9/Gleitz SuMo
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Of course not. Dolby Digital (AC3) is a lossy format which stores frequencies of the audible spectrum with a limited precision and suppresses frequencies it calculates as subjectively inaudible. The source (with 448 kbps) already lost some frequency parts of the original sound which was recorded on the movie set. Raising the bitrate afterwards doesn't bring these lost frequencies back, they will still be lost. You cannot "invent" more quality than the source contained. And each conversion to a lossy format — even with a higher bitrate than the source — reduces the quality even more.
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29th December 2012, 04:18 | #11969 | Link |
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Hmm...so I have a DTS track with 5 channels. It isn't a theater DTS track...just DTS from a commercial Blu-Ray that has no LFE (Adventures of Tintin series from the early 90s). I want to encode this to AAC with a fake LFE so that the usual suspects won't choke on it (iOS hardware decoding). Using the -6 option with eac3to yields a '6-channel' track consisting of the right and left channels and 4 channels of silence, so that's not it. Is there some easy switch that'll enable me to do this with eac3to, or is a more manual approach required?
ED: Looking into it more, seems to be that the commercial DVD itself only had LPCM at 2.0, and the release group botched the audio encode somehow. Last edited by bilditup1; 29th December 2012 at 04:52. |
29th December 2012, 11:58 | #11970 | Link | |
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Quote:
BTW, seems your DTS 5.0 have 3 channels of silence. Maybe you can try something like: eac3to input.dts stdout.wav | sox -t wav - -t wav - remix -m 1 2 | NeroAacEnc -q 0.5 -ignorelength -if - -of output.m4a
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30th December 2012, 21:07 | #11972 | Link |
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Right, I figured out that it was a bad encode. I don't think the resulting 2ch files (which register as 6ch, with 4ch of silence) are any bigger than normal 2ch files. They're just recognized as 6ch files (as they should be) Will the above code take only the front two channels? Will using -down2 instead of that in this case muck up the audio or something?
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31st December 2012, 03:40 | #11973 | Link | |
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Yes.
Quote:
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2nd January 2013, 21:24 | #11975 | Link |
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eac3to v3.25 released
http://madshi.net/eac3to.zip Code:
* fixed: option "-down6" didn't handle 6.1 tracks properly * fixed: option "-down6" for 7.1 content lowered side channels in volume * fixed: 6.1 DTS/E-AC3 libav decoding resulted in incorrect 70f channel mask * fixed: a couple of funny AC3 channel configs resulted in swapped channels * fixed: option "-check" failed for SRT subtitles * fixed: MKV tracks without language information didn't default to "English" * fixed: 16bit MLP decoding didn't work at all * fixed: DTS 2.1 decoding had empty sub channel when using ArcSoft decoder * fixed: muxing h264 video streams without VUI eventually crashed * fixed: SMPTE 302M 20bit PCM tracks didn't extract properly * improved AC3 seamless branching handling by detection of identical frames * improved DTS seamless branching handling by detection of identical frames * updated to latest ffmpeg/libav revision * added support for libav DTS 6.1 and 7.1 decoding (only in core, no DTS-HD) * added support for encoding all AC3 channel configurations * added support for demuxing Blu-Ray primary E-AC3 tracks (AC3 core) * libav is now the default decoder for AC3 and E-AC3 * option "-down2" is now deprecated, but still supported * option "-downDpl" mixes down to Dolby Pro Logic II * option "-downStereo" mixes down to standard stereo * added support for mixing any channel configuration to stereo/DPL * DPL downmixing doesn't lower volume, anymore (except when clipping occurs) * editing audio tracks by adding silence is now less restrictive * trying to mux right eye stream to MKV errors out now, instead of crashing * doing "eac3to 1) movie.mkv" for 3D BDs now properly skips right eye stream * FLAC encoding is now done with optimized block sizes for "LossyWAV" files * encoder bitdepth for lossy DTS tracks is no longer displayed * option "-test" no longer checks mkvtoolnix It seems that mono TrueHD decoding is currently broken when using libav/ffmpeg decoding, but I'm not 100% sure because I only have one such sample and it's pretty short. Maybe you guys can double check (and provide me with a longer sample)? This looks like a libav/ffmpeg bug to me, though, if it's really a bug at all. At least Brave TrueHD decoding seems to be working fine now. Please note that although eac3to now supports parsing, demuxing and core-extraction for Blu-Ray primary E-AC3 tracks, currently no decoder is available which can decode the full audio information with all 6.1/7.1 channels. Currently only the AC3 core can be decoded which results in 5.1 output only. |
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