On Thu, May 04, 2017 at 10:58:47 +1000, [email protected] wrote:
>   [wmav2 @ 0x7fdbeb01cc00] block_align is not set
>   [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fdbeb001200] Failed to open codec in 
> av_find_stream_info
>   [wmav2 @ 0x7fdbeb01cc00] block_align is not set

Either the codec is misidentified (or mistagged in the MOV file), or
ffmpeg doesn't like the combination wma+mov.

>   [abuffer @ 0x7fdbea5006c0] Unable to parse option value "(null)" as sample 
> format

Perhaps it would help to indicate to ffmpeg the input sample format
(but I'm only guessing).

Do you have a file sample you can share?

> Any idea what this is trying to tell me?
> Is there something wrong with the file?

Perhaps.

> Or with the ffmpeg installation?

Unlikely.

> Or the command? Or something else?

No, under normal circumstances, your command is fine.

Have you tried:
$ ffmpeg -i in.mov -c copy out.wmv
?

Moritz.
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