UsEac3to v1.3.4: a different GUI for eac3to

[hypnotize666]

I found it a bit fishy but I still tried with this command: stdout.wav -normalize | qaac -v 192 --he --ignorelength -o %_.m4a - but the strange thing is that by clicking on the menu at the end it does not mark a .m4a type file but rather an .aac type file as I wasn't sure I tried 2 ways but without success 2: stdout.wav -normalize | qaac -v 192 --ignorelength -o %_2fre.aac -

[tebasuna51]

Originally Posted by hypnotize666

... but why in the log does it indicate a nero direct show codec error?

Because eac3to need Nero 7 installed to decode AAC, NeroAacDec is not enough. Decode it before to wav with ffmpeg (A/V Recode) and after normalize and recode to AAC.

[tebasuna51]

Originally Posted by hypnotize666

I found it a bit fishy but I still tried with this command: stdout.wav -normalize | qaac -v 192 --he --ignorelength -o %_.m4a - but the strange thing is that by clicking on the menu at the end it does not mark a .m4a type file but rather an .aac type file as I wasn't sure I tried 2 ways but without success 2: stdout.wav -normalize | qaac -v 192 --ignorelength -o %_2fre.aac -

What menu?
Without success?

Both commands works fine for me (of course over a source than can be decoded by eac3to), the first create a file_.m4a (aac HE in mp4 container) and the second a file_2fre.aac LC

[mannequin80]

Originally Posted by tebasuna51

Well, I prefer some clip than don't listen the dialogs, with the 0.707 coeficient the volume of center channel is preserved, with low coeficients means attenuate the dialogs.

is there a universal way to enhance the dialogue (center channel) without applying additional filters (like dynaudnorm)?

[tebasuna51]

@mannequin80
Read the thread convert 5.1 to stereo

Players can be instructed to enhance the FC in the downmix, for instance with mpc-hc:

[mannequin80]

Originally Posted by tebasuna51

@mannequin80
Read the thread convert 5.1 to stereo

i'd love to keep it at 5.1 and make it playable across various devices with good sounding dialogue while maintaining the dynamic range as much possible and not using any hardware methods like DRC or Night Mode. after looking at multiple methods, i can't find a better solution than "volume=x.xdB (if needed), dynaudnorm=p=0.9:m=2:g=31:f=300". there's no easily detectable volume pumping even in complicated scenes BUT the drawback of this method is the loud parts (like music, etc) become even louder so it's difficult to preserve the balance. wondering about any additional tweaks to try.

[DanDare1983]

Do you have to -keepdialnorm when extracting atmos? I remember using the old eac3to and it would automatically remove dialnorm as it was supposed to help in some way. I'm using -keepdialnorm from now on as I think it's the best thing to do especially as dgdemux and makemkv keeps dialnorm too.

[tebasuna51]

Originally Posted by DanDare1983

Do you have to -keepdialnorm when extracting atmos? I remember using the old eac3to and it would automatically remove dialnorm as it was supposed to help in some way. I'm using -keepdialnorm from now on as I think it's the best thing to do especially as dgdemux and makemkv keeps dialnorm too.

Just a few days before:

Originally Posted by tebasuna51

The data are preserved (same size and MediaInfo show both like JOC) but with Dialnorm changed (if show -31 dB maybe it is changed) seems not compliant.

Extracted with -keepDialnorm my Denon player show DD Atmos and decoded with Dolby Reference Player seems fine.

Without -keepDialnorm (or converted to mkv from m2ts with MkvToolnix) my Denon player show DD+ and decoded with Dolby Reference Player we obtain only silence.

Like I say MediaInfo show JOC for both and Cavernize decode both with the same output (seems more permissive).

[spinkeln]

Deleted

[MrVideo]

Originally Posted by DanDare1983

Do you have to -keepdialnorm when extracting atmos?

Using eac3to v3.52, I've discovered that using -keepdialnorm wasn't necessary as eac3to indicates, when it starts to operate on the source, that it is "Keeping dialnorm."

The job that was doing was extracting the thd and ac3 streams from a mkv file so that I can THD merge the two.

[MrVideo]

Is it possible with (Us)Eac3to to create an eac3 file with an empty core, like what can be done with a THD stream within a MKV file?

[tebasuna51]

Originally Posted by MrVideo

Using eac3to v3.52, I've discovered that using -keepdialnorm wasn't necessary as eac3to indicates, when it starts to operate on the source, that it is "Keeping dialnorm."

It is not necesary if you have the -keepdialnorm in the eac3to.ini file.

Originally Posted by MrVideo

Is it possible with (Us)Eac3to to create an eac3 file with an empty core, like what can be done with a THD stream within a MKV file?

UsEac3to can create eac3 files using ffmpeg (only to 5.1 and without ac3 core, only eac3 frames) but I can't understand the relation with THD.

To create a THD track BD compliant need a ac3 file, not eac3.
To create a eac3 track BD compliant you can't use ffmpeg (maybe Dolby Encoder Engine).

[MrVideo]

Originally Posted by tebasuna51

It is not necesary if you have the -keepdialnorm in the eac3to.ini file.

It is there, but I never put it there. Must be part if the distro.

UsEac3to can create eac3 files using ffmpeg (only to 5.1 and without ac3 core, only eac3 frames) but I can't understand the relation with THD.

THD was only mentioned as an example.

[tebasuna51]

Originally Posted by MrVideo

Must be part if the distro.

Yes, it is. I don't like that option and I delete that option from the .ini file.

[MrVideo]

Originally Posted by tebasuna51

Yes, it is. I don't like that option and I delete that option from the .ini file.

Why don't you like the option?

[tebasuna51]

The Dialog Normalization different than -31 dB force to compliant decoders to attenuate the E-AC3 tracks all the sound.
Thats is a problem to recode, or listen, compared with others codecs.

For instance, with old DVD's with AC3 and DTS tracks all the people prefer the DTS track because sound high, normally 4 dB high with standard DN at -27 dB, than the same AC3 track.
The DTS encoder is not better, at same bitrate, than the AC3 only it is decoded without attenuation.
The same source encoded with GUIDE: How To Properly Encode Dolby Digital Audio (AC3) recomendations sound with less volume than encoded with AAC, DTS,...

The same for the Dolby recomendation about Dynamic Range Compression, when we need recode a E-AC3 track we need force decoders (ffmpeg, avs decoders) to use drc=0.
When ffmpeg encode AC3 or EAC3 by default always use DN -31 dB and DRC=none to offer the same behaviour than others codecs.

If all the audio was encoded with Dolby defaults DN/DRC all can be ok, but if you listen Dolby compliants tracks and TV comercials or CD audio (Loudness war) or the same track encoded with other codec, you need modify the volume button every time.

[MrVideo]

Thanks for the info. I certainly do not want DRC. I'll remove the keepdialnorm option from the ini.

[SeeMoreDigital]

With regard to Dolby audio streams, is Dialnorm applied to all the available channels or just the centre channel?

[tebasuna51]

Originally Posted by SeeMoreDigital

With regard to Dolby audio streams, is Dialnorm applied to all the available channels or just the centre channel?

To all. Just a part of GUIDE: How To Properly Encode Dolby Digital Audio (AC3):

The decoder will perform an attenuation of (31 + dialnorm) dB to the program material when played back. So, in this case, the decoder will attenuate by (31 + -18) = 13 dB. This will bring the average sound level of the material to (-17.6 - 13) = -30.6 dBFS. The program is now played back at approximately -31 dBFS, the reference level.

-31 dBFS is a lower average volume level than what is typical from other sources. It will be noticeable that you will have to turn the volume up on your system when playing a DVD versus playing broadcast, tape, or other non-Dolby Digital program material.

[SeeMoreDigital]

Originally Posted by tebasuna51

To all. Just a part of GUIDE: How To Properly Encode Dolby Digital Audio (AC3):

Thanks