[FFmpeg-user] ffmpeg and webm format and mkv format

[jd1008]

On 09/16/2016 01:43 PM, jd1008 wrote:
>
>
> On 09/16/2016 12:09 PM, Moritz Barsnick wrote:
>> On Fri, Sep 16, 2016 at 19:56:26 +0200, Carl Eugen Hoyos wrote:
>>> The following lines are shown if you press "h" while encoding.
>> Interesting. This line from the originally posted output also hints at
>> keyboard interaction, in this case 'c':
>>
>>> Parse error, at least 3 arguments were expected, only 1 given in
>>> string 'h-s66yCNu-sbk.webm'
>>> Do you have a cat?
>> LOL! That comment took a while to sink in with me. (Even though I have
>> a cat on my lap.)
>>
>> Moritz
>> _________
> I had absolutely zero KB intgeraction as I started the transcode
> and went out for a coffee break.
> P.S: I have no pets and no one else shares the apt. :) :)
>
So, which "release" or "private build" should I use in order to properly
transcode WEBM to MP4 ?
Is WEBM a container arrangement? If so, why should it be a problem
for ffmpeg to just extract the content?