[FFmpeg-soc] AAC LTP and SSR

Andreas Öman andreas at olebyn.nu
Mon Jan 28 19:28:49 CET 2008


Mike Melanson wrote:
> 
> I like #2. Do you know of any AAC samples that use the LTP and SSR
> modes? I have been looking at the nearly 600 samples in the AAC
> conformance suite but I don't know how to feed them into FFmpeg yet.

Hmm? Those are .mp4-files so it should be playable right away (it is
for me at least)

If you are referring to the samples @

http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_IEC_14496-4_2004_Conformance_Testing/audio_conformance/mpeg4audio-conformance/compressedMp4/

There are some doc-files nearby, in particular

http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_IEC_14496-4_2004_Conformance_Testing/audio_conformance/mpeg4audio-conformance/doc/fileNameConventions.html

mentions which files have what type of extensions.

I've only been testing with the AAC LC samples at 48kHz (al??_48.mp4)
That was enough initially :-)



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