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30th May 2022, 17:43 | #121 | Link | |
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30th May 2022, 17:56 | #122 | Link | |
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I think eac3to went nuts. I forgot to say: I need the wave remapping (if any) to have the correct 6.1 (or whatever) DD+ TotalCode Studio (or Audition) encoding. ffprobe gives me: Code:
Stream #0:0: Audio: dts (DTS-HD MA), 48000 Hz, 5.1(side), s32p (24 bit) Stream #0:0: Audio: dts (DTS-HD MA), 48000 Hz, 6.1, s16p
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@turment on Telegram Last edited by tormento; 30th May 2022 at 18:07. |
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31st May 2022, 19:48 | #123 | Link |
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You don't need nothing to remap for the first one 5.1
The second one (16 bits) is decoded to 6.1 (FL FR FC LFE BC SL SR) and if you want to encode to EAC3 6.1 (L,R,C,LFE,Ls,Rs,Cs) you must remap the BC in wav to the last position: ffmpeg -i "[jpn]6116.dts" -filter_complex "pan=6.1|c0=c0|c1=c1|c2=c2|c3=c3|c4=c5|c5=c6|c6=c4" -acodec pcm_s16le "6.1_Channels_R.w64" for Audition or, for TotalCode Studio with -rf64 auto -acodec pcm_s16le "6.1_Channels_R.wav"
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1st June 2022, 12:56 | #125 | Link | |
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In Audition: BitStream Information -> Dolby Digital Surround EX mode -> Enabled Maybe TotalCode Studio can set that flag also, I don't remember.
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11th June 2022, 09:13 | #128 | Link |
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@tebasuna51
I was thinking about using Dolby Reference Player to properly decode audio. Did you ever used it? I think it should be launched from CLI for the decoding part.
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3rd August 2022, 14:11 | #130 | Link |
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My god, I can finally post.
Anyway, I got the Plex DDP encoder working standalone and creating 7.1 content. Everything works great and correct, except for ONE issue. It appears to be adding forced processing to the audio in some way - it sounds like dialogue enhancement or something. Every time there's audio in the center channel (typically dialogue) it abruptly ducks the volume of the surround speakers and unducks it the moment the center channel goes quiet again. No dynamic compression, enhancement, etc is enabled on the listening end, so this effect seems like it's getting hard baked into the audio and is ruining what would otherwise be perfect 7.1 encodes. Anyone know why this may be happening and how to stop EAE from doing it? |
4th August 2022, 09:10 | #131 | Link | ||
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What is the player used?
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4th August 2022, 12:32 | #132 | Link | |
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Ffmpeg's encoder has never supported generating it. |
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4th August 2022, 19:03 | #133 | Link | |
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['film_light', 'film_standard', 'music_light', 'music_standard', 'speech'] You can't disable it in any way. When it comes to dialnorm, you can set it between -31 and -1dB, and 0 will automatically calculate it (and you can't skip measrement even if you set it manually). You can also set a metering_mode and a speech_threshold for it, but they produce bit identical files no matter what you set these. |
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5th August 2022, 00:01 | #134 | Link | |
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The whole point of DRC (not really dialnorm, that is separate) is that you can remove the compression if you do not care about your neighbours. |
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5th August 2022, 10:52 | #136 | Link | |
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Code:
DRC six presets available to choose from, including None. Music Light Music Standard Film Light Film Standard Speech dB range (ratio) dB range (ratio) dB range (ratio) dB range (ratio) dB range (ratio) ---------- ------- ---------- ------- ---------- ------- ---------- ------- ---------- ------- Max Boost (fix): < -65 (12 dB) < -55 (12 dB) < -53 ( 6 dB) < -43 ( 6 dB) < -50 (15 dB) Boost Range: -65 to -41 (2:1) -55 to -31 (2:1) -53 to -41 (2:1) -43 to -31 (2:1) -50 to -31 (2:1) Null Band Width: -41 to -21 (1:1) -31 to -26 (1:1) -41 to -21 (1:1) -31 to -26 (1:1) -31 to -26 (1:1) Early Cut Range: nothing -26 to -16 (2:1) -21 to -11 (2:1) -26 to -16 (2:1) -26 to -16 (2:1) Cut Range: -21 to +9 (2:1) -16 to +4 (20:1) -11 to +4 (20:1) -16 to +4 (20:1) -16 to +4 (20:1) And without the ratio 20:1, the culprit of abrupt volume changes.
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BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 5th August 2022 at 11:00. |
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5th August 2022, 17:14 | #138 | Link |
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If you encode flac to eac3 to get decoder close to flac you need to turn off DRC in the decoder. See this audacity patch, that uses ffmpeg and requires drc_scale 0. Last comment is mine: https://github.com/audacity/audacity/issues/631
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5th August 2022, 20:20 | #140 | Link | |
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Maybe, but only if the source was 8-bit.... But who would do that? Certainly no commercial provider!
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