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ali-alidoust / gta5-extended-video-export

GTA V Video Export Enhancement
Apache License 2.0
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ffmpeg filter support #8

Open mcmtroffaes opened 7 years ago

mcmtroffaes commented 7 years ago

It would be pretty neat if ffmpeg's filters would be available to be used during export process, say through a new option in our ini file.

Whilst at it, note I've updated the framestep filter in ffmpeg to support motion blur: https://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209795.html - if this gets merged, then this should open up some interesting possibilities, for example when you want to apply some filters for special effects before and/or after motion blur is applied. Also we could drop the motion blur code entirely and leave it just to ffmpeg; in that scenario, we'd for instance have that:

fps = 600 videofilter = framestep=step=10:blend=5

would be the same as

fps = 60 motion_blur_samples = 9 motion_blur_strength = 0.5

The framestep filter could also be combined with tblend to produce "rolling over" motion blur, e.g.

fps = 600 videofilter = framestep=step=10:blend=10,tblend=average

Anyway, supporting filters would give the user a bit more control over the sort of motion blur they want to achieve, and enable a whole host of other effects as well.

ali-alidoust commented 7 years ago

This would really make a good addition. Aside from new possibilities it might speed up the export time as well.

mcmtroffaes commented 7 years ago

Nice to hear you're positive about the idea :) thanks! Turns out that my patch is failing on MIPS but hopefully once that's fixed we'll be able to take advantage of it from upstream ffmpeg.

mcmtroffaes commented 7 years ago

Just a quick note here that I'm still trying to get the motion blur filter into ffmpeg: https://ffmpeg.org/pipermail/ffmpeg-devel/2017-June/211866.html