[FFmpeg-user] No duration with pipe:1 as output

[Paul B Mahol]

On 2/8/16, Robert Nagy <ronag89 at gmail.com> wrote:
> When I set "pipe:1" as the output the resulting file always ends up without
> a duration in it's metadata/header (ffprobe doesn't find it).
>
> I'm primarily interested in outputting webm, but I have the same issues
> with nut and mkv.
>
> Is there a way around this?


Nope, because AFAIK they store duration at start of file.

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