Re-exporting a edited youtube video

[ejmillan]

Something to do with visual quality.

Why is my export different (lagging video) from what I see in preview?

100% means lossless. There is no compression and quite a few video players will probably have difficulties playing the resulting file properly. If you want “Visually Lossless” (i.e. the human eye can’t see the difference) don’t go above 67%. From the ffmpeg website: Lossless H.264 You can use -crf 0 to create a lossless video. Two useful presets for this are ultrafast or veryslow since either a fast encoding speed or best compression are usually the most important factors. Fast encoding exampl…