Opening AAC from MP4 file - what else besides LWLibas/LSMASH/ffms2?

[rgr]

Originally Posted by tebasuna51

Fill gaps with what?
If you fill with decoded silence at the midle of a strong sound, when you recode that you can obtain a click, because encoders must be initialized with the last value of previous frame.
Support some clicks is ok but many...

Silence shouldn't generate clicks. So how does eac3to do it?

eac3to show 53 but only with 5 ms or more, sure there are much more short than 5 ms.

Possible, but after 4 hours of recording the video perfectly matches the audio.

If you want recode that file the unique solution is preserve the timestamps and aply them the the new audio (of course to video also).

ffmpeg works fine, but I have to use Avisynth

Check if your standalone recorder have other options to store your video/audio

Unfortunately not.

[tebasuna51]

Originally Posted by rgr

Silence shouldn't generate clicks. So how does eac3to do it?

eac3to only can insert or delete complete audio frames.
With some codecs can insert a silence frame or repeat the last frames (the parameter -edit=H:MM:SS.MMM,Xms with -silence or -loop)

I doubt it can create AAC silence frames then only the -loop can be used.
When the gaps are big than 21.333 it can repeat 1 frame, like I say that can produce, or not, a audible click.

ffmpeg works fine, but I have to use Avisynth

For what?

[rgr]

Originally Posted by tebasuna51

eac3to only can insert or delete complete audio frames.
With some codecs can insert a silence frame or repeat the last frames (the parameter -edit=H:MM:SS.MMM,Xms with -silence or -loop)

I doubt it can create AAC silence frames then only the -loop can be used.
When the gaps are big than 21.333 it can repeat 1 frame, like I say that can produce, or not, a audible click.

I checked the audio produced by eac3to -- in places where there were gaps, the sound is OK.

For what?

Postprocessing.

[tebasuna51]

You must process video and audio in a separate way, inside AviSynth you can lose the sync.

[rgr]

Yes, that's how it is at the moment.
Of course I can also load an audio file from eac3to into the Avisynth script and it works.