[FFmpeg-user] 2 pass seg faults if audio codec not specified in pass 1

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Jun 15 15:53:59 CEST 2014

Sean Darcy <seandarcy2 <at> gmail.com> writes:

> If I try to transcode mts in 2 passes using "-an" I 
> get a seg fault:

You are lucky.

If the segfault gets fixed, you get an output file but 
no indication that it is broken in the sense that two 
pass encoding did not make the encoding better (quality 
wise) but worse.

Do not use -an (and use the same container as for 
pass 2) for the first pass.

Carl Eugen

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