[Libav-user] i-Frame only without encoding

[Patrick Fischer]

Hello

I'm trying to create an I-Frame only video from an existing video.
This works fine:
 ffmpeg -i  input.ts -vf select='eq(pict_type\,PICT_TYPE_I)' output.ts

Is there an way without re-encoding the video?

Something like:
 ffmpeg -i  input.ts -vf select='eq(pict_type\,PICT_TYPE_I)' -vcodec
copy output.ts

I know that VF and copy will not work together.

I also know that there are some problems and the B/P Frames must be created.

IPPPPPPPPP IPPPPPPPPP IPPPPPPPPP

First I think it would be nice to create a video with
III
So the video will just contain the I-Frames. Drop all P-Frames.
This will chance the timing, destroy GOP structure, ...

A more complex way is to insert dummy p Frames.

Did ffmpeg support any kind of i-Frame only without encoding?

Regards
Patrick