VideoHelp Forum

+ Reply to Thread
Results 1 to 3 of 3
  1. I am using AviUtl. I have one video with a logo that is 1920x1080 and flv format. I have another without the logo in 640x480 DX50 format. After I make my edits, I am planning on outputting the project as H.264. I will make a mask to display the lower resolution video through where the logo is.

    What is the best way to resize the 640 video to 1080? I know it will not matter much. But I like to over-think quality. I could use the AviUtl resize and do it on the fly while re-coding. Or I could use some other program to re-code the 640 video to 1080. What will do the best quality resize?

    Crud. Looks there is no way to edit the misspelling in my title
    Last edited by ChasVideo; 5th Nov 2021 at 04:14.
    Quote Quote  
  2. I mentioned Avisynth in this related thread, in case you were puzzled by the laconic reply above, it also refers to Avisynth. From what I could read, it is the best available filter for upscaling, which is what you need here. Others may be more suited for downscaling, although I don't remember the specifics.
    In fact you could probably do the whole matching / resizing / overlaying with Avisynth, then use ffmpeg to encode the result directly from the AVS script. (The alternatives would be actually more complicated : either encoding each framerate converted and/or resized video with a lossless codec if you care about quality — which means huge intermediate files — then loading those files into AviUtl ; or creating “virtual” uncompressed files from the Avisynth script using AVFS, then loading those “virtual” files into AviUtl — this solution doesn't require extra storage space but is quite complicated to set up the first time, and can present reliability issues when the script becomes complex.)
    Quote Quote  

Similar Threads