![]() ![]() I'm not sure how to draw the box and scale it separately from the source video. Doing this ensures that the memory transfers (system memory to video memory and vice versa) are eliminated, and that transcoding is performed with the highest possible performance on the GPU hardware. It takes each component (demux, decode, filter, encode, muxer, and cutomized component) as a building. decoder, this command also uses the scaling filter (scalenpp) in FFmpeg for scaling the decoded video output into multiple desired resolutions. compositional FFdynamic is structured in a modular way. Now, if I set the width to a fixed value, it runs, but then there's the problem that the overlay contains the whole video itself as it is the input of the drawbox filter. Extending: FFdynamic extends FFmpeg in the manner of doing video/audio process compositionally and each component's state can be dynamically changed on the fly. With this I get an error of: Error when evaluating the expression 'if(gte(t*20,600),600,t*20)'. I've seen some solutions using overlay, but they are fixed width and are rather used to move the box around. For example, I use zscale to convert to linear light before downscaling using scale and then I use zscale to convert back to BT.1886 gamma. Cloudinary Cloudinary is a cloud-based service that streamlines websites and mobile applications. Top Alternatives to FFMPEG GStreamer It is a library for constructing graphs of media-handling components. Dynamic Adaptive Streaming over HTTP demuxer. FFMPEG is a tool in the Image Processing and Management category of a tech stack. I find myself using scale for actual image scaling but I do use zscale quite often for colorspace conversions. As an output option, this inserts the scale video filter to the end of the. ![]() Since drawbox does not support the 't' (as in time) variable, I'm at a loss here. There are multiple ways to talk to FFmpeg's libswscale library, you're mixing two of them here. ![]() I need to draw a box that grows in size horizontally over a video (scaling its width as time goes by) Now, ffmpeg is running on a CPU-constrained platform, and it may be that, in order for the transcoding to ‘keep up’ with the input, the output framerate needs to be less than the input framerate, which is totally fine. ![]()
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