[FFmpeg-devel] [PATCH]lavf/mov: Support alac extradata in wave atom v2

[Carl Eugen Hoyos]

Michael Niedermayer <michael <at> niedermayer.cc> writes:

> +            ffio_ensure_seekback(pb, 8);
> +            buffer = avio_rb64(pb);
> +            atom.size -= 8;
> +            if (  (buffer & 0xFFFFFFFF) == MKBETAG('f','r','m','a')
> +                && buffer >> 32 <= atom.size
> +                && buffer >> 32 >= 8) {
> +                avio_skip(pb,  - 8);
> +                atom.size += 8;

I tested that QT expects the frma atom first 
in the wave atom, so this variant is ok as 
far as I can tell.

Thank you, Carl Eugen