[FFmpeg-user] Right way to extract and recombine audio/video streams?

[Gilles]

On Thu, 2 May 2013 11:07:22 +0000 (UTC), Carl Eugen Hoyos
<cehoyos at ag.or.at> wrote:
>> [C:\]ffmpeg.exe -i input.flv -c:v copy -an output.m4v
>
>You cannot mux Sorenson Flash ("flv1") into a iDevice 
>file ("m4v"), your iPhone / iPad would not play the 
>resulting file.
>You should also not mux Sorenson Flash into mov, it 
>is not defined afaik.

Which container should I use to demux a H264 video stream from an FLV
file before editing it with eg. AviDemux or Sony Vegas?