20% of m4a files fail as "unsupported"

[ghost]

The title says it all. I want to convert many m4a files to ogg but I'm getting a high failure rate. All my m4a's were created by nero with the same settings (afaik)!
Unfortunately I cannot attach examples of audio here.

[lordmulder]

Hello,

which version of LameXP are you using? Can you provide MediaInfo report of the affected files?

In the latest LameXP release, i.e. v4.16 (Build #2134), there are two known problems:

• LameXP v4.16 does not detect "raw" AAC files (plain ADTS stream, not MP4 container) correctly
• Latest version of FAAD, as used by LameXP v4.16, fails to decode MP4 files containing video stream

Problem #1 is already fixed for the upcoming LameXP release. Problem #2 is not really a problem in LameXP itself, but in FAAD tool. However, if problem #2 will not be fixed in FAAD anytime soon, I will have to revert LameXP to an older version of FAAD. You can try the latest Alpha release of LameXP for now:

LameXP-ALPHA.2018-07-06.Release-Static.Build-2144.exe

Regards
MuldeR

[lordmulder]

Should be fixed in LameXP v4.17 RC-4.