[FFmpeg-user] How to deinterlace a 25fps (50i tff content) video with FFplay and output it as 50p?

James Darnley james.darnley at gmail.com
Fri Oct 23 15:21:58 CEST 2015

On 2015-10-23 15:14, Phil Rhodes wrote:
>>> $ ffplay -i test.avi -vf "yadif=0:0,fps=50"
>>> should do the trick.
>> No!
> Why not? What will?

The man looks on with incredulity for is he sure that the manner in
which this is done has just been indicated.  He turns to the trusty
manual, source of all knowledge.  He begins to read...

> mode
>     The interlacing mode to adopt. It accepts one of the following values:
>     0, send_frame
>         Output one frame for each frame. 
>     1, send_field
>         Output one frame for each field. 
>     2, send_frame_nospatial
>         Like send_frame, but it skips the spatial interlacing check. 
>     3, send_field_nospatial
>         Like send_field, but it skips the spatial interlacing check. 

And thus did the man quote the manner in which one instructs the tool to
give the results desired.

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