[FFmpeg-user] image Overlay

[Alexandre FERRIEUX - RD/SIRP/LAN]

On 04/01/2012 13:03, Lorenz Martens wrote:
> Thanks for the quick resopnse guys,
>
> @Alex: Could you please give a -vf syntax I'm not sure how to convert your liberal syntax to get it to work.

Nope, it is not implemented, it is an idea for future directions, sorry :}

-Alex

> thanks
> Lorenz
>
>> A possible alternative to these extensions:
>>
>>    - allow frames to have a transparent color, or a mask bitmap, usable for padding.
>>
>>    - create a "sequence" video source that would internally concatenate the decoded sources
>>
>> Then, the example becomes:
>>
>>    - Assume S is the original source, OV1 and OV2 the two short sequences
>>
>>    - let t1, t2, t3 be the durations of the holes outside OV1+OV2
>>
>> Result is then (liberal syntax, not that of vf, for readability)
>>
>>   Overlay(
>>     S,
>>     Seq(
>>       Color(transp,t1),
>>       OffPad(OV1,..,transp),
>>       Color(transp,t2),
>>       OffPad(OV2,..,transp),
>>       Color(transp,t3)
>>     )
>>   )
>>
>> Of course that's not the way current vfs are designed, but it is more modular. Please comment/destroy.
>>
>> -Alex
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>
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