eac3to - audio conversion tool

tebasuna51 · 2nd October 2020, 11:57

To view AC3 metadata you can use MediaInfo or my LeeAudBi tool.

I don't know other tool to edit AC3 metadata, only eac3to for set DN to -31dB or specific tools for instance the attached ones:

- DN27_Ac3 restore the Dolby DN default value to -27 dB (a decoder Dolby compliant must attenuate in 4dB the full stream by default)

- DN31_Ac3 remove the DN, setting the value to -31 dB (a decoder must decode without attenuate nothing, recommended for recode in ac3to by default)

- DplAc3 set the Dolby Pro Logic flag in stereo AC3's

I don't know other metadata than can be safely changed without recode.
BTW there are here (now DN work also with EAC3)the sources to do other changes.

2nd October 2020, 11:57	#11 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	To view AC3 metadata you can use MediaInfo or my LeeAudBi tool. I don't know other tool to edit AC3 metadata, only eac3to for set DN to -31dB or specific tools for instance the attached ones: - DN27_Ac3 restore the Dolby DN default value to -27 dB (a decoder Dolby compliant must attenuate in 4dB the full stream by default) - DN31_Ac3 remove the DN, setting the value to -31 dB (a decoder must decode without attenuate nothing, recommended for recode in ac3to by default) - DplAc3 set the Dolby Pro Logic flag in stereo AC3's I don't know other metadata than can be safely changed without recode. BTW there are here (now DN work also with EAC3)the sources to do other changes. __________________ BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 29th September 2021 at 16:48.