[FFmpeg-user] ~50% performance difference overlaying static image with png series using -vf/-filter_complex

[Paul B Mahol]

On 8/23/13, d-fens <d-fens at 00010111.de> wrote:
> Zitat von Paul B Mahol <onemda at gmail.com>:
>
>> On 8/22/13, d-fens <d-fens at 00010111.de> wrote:
>>> hi,
>>>
>>> i have a background png and a sequence of pngs with transparency which
>>> should overlay the background.
>>>
>>> when i use
>>>
>>> ./ffmpeg -i %04d.png -vf "movie=bg.png [bg]; [in] format=rgb32, split
>>> [T1], fifo, [bg] overlay=0:0, [T2] overlay=0:0 [out]; [T1] fifo [T2]"
>>> out.mp4
>>>
>>> (taken from
>>> http://stackoverflow.com/questions/10438713/overlay-animated-images-with-transparency-over-a-static-background-image-using-f)
>>> i get arround 13fps for fullHD images, but using
>>>
>>> ./ffmpeg -loop 1 -i bg.png -i %04d.png -filter_complex
>>> overlay=shortest=1 out.mp4
>>
>> Try removing loop and shortest.
>
>
> this just outputs one frame, so no success :(

Than change order of streams - make bg.png 2nd.
>
>
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