[FFmpeg-user] RTMP output - "Past duration too large"

Matt Conway conwayxd at gmail.com
Mon Feb 23 17:04:26 CET 2015

On Mon, Feb 23, 2015 at 3:57 PM, Moritz Barsnick <barsnick at gmx.net> wrote:

> FLV is a format, H.264 is a codec. The FLV container can hold H.264
> video, and ffmpeg's multiplexer does support that.
> And I'm sure ustream's FAQs recommend H.264 as a codec.
> So if it must be FLV _format_:
>   -c:v libx264 -f flv
> or in your case:
>   -c:v copy -f flv
> That _should_ work, at least from ffmpeg's perspective, and probably
> from ustream's as well.
Ok I must have been using an older version when I tried before.
I recompiled and it appears to be working when specifying to copy the codec
now. (I was using -vcodec copy, not -c:v copy. Could this have been an

Thanks again Moritz. Always coming to my rescue!

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