There is more to know about filename patterns which will explained in a later section. The " %03d" represents a sequence of three, zero-padded, decimal digits. This particular pattern corresponds to image-000.png, image-001.png, image-002.png up to image-999.png. The image-%03d.png part is a filename pattern. For example the framerate will be 25 and the encoding will be inferred from the filenames. When no further arguments are given a set of defaults will be used. 3 Making an Image Sequence from a video.2.4 Slideshow with crossfading between the pictures.2 Making a video from an Image Sequence.But it doesn't seem that important as far as I can tell. Impossible to convert between the formats supported by the filter 'Parsed_scale_npp_0' and the filter 'auto_scaler_0' Error reinitializing filters! Failed to inject frame into filter network: Function not implemented Error while processing the decoded data for stream #0:0 Conversion failed!Īlso there's things like hardware upload and download which I can't figure out. This code ffmpeg -y -hwaccel cuvid -i INPUT c:a copy -c:v hevc_nvenc -vf "scale_npp=w=1920:h:-1:format=yuv420p:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2" OUTPUT This code can't leave the video as it is if it's smaller than FHD. I'm not sure if I'm going to have problems using -hwaccel cuvid and nvenc but it seems to work fine. ffmpeg -y -hwaccel cuvid -i INPUT -c:a copy -c:v hevc_nvenc -vf "scale_npp=1920:1080" OUTPUT I want to use something like this -filter:v "scale='min(1920,iw)':min'(1080,ih)':force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2"īut I've only gotten a very limited version of it to work. I have a 1070 with a recently compiled version of ffmpeg with just about everything enabled.
(Not sure about OpenCL but it probably can) I'm aware that Scale_Cuda, Scale_NPP and Vulkan that can do this. Software filters take forever, and since my encodes use nvenc anyway I thought I might as well give gpu resizing a shot.
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