YaMoonSun: you're missing a value for the -c:a:1 parameter Keeps telling me there's no output file specified ffmpeg -i input.whatever -c:v libx264 -acodec copy output.mkv Why would you copy a library into a video file? O.o sheldor: i see this is just h264 with another fourcc=rv64 could you open bug report here ? Is there a reason I can't copy libx264 into a. sheldor: could you upload recording.mov somewhere?

sheldor: 2 tracks have unsupported codec Try putting quotes around the input filename Hi I'm trying ffmpeg -i in.mov out.webm but I get ' No decoder for stream #0:1, filtering impossible' Just downloaded the newest one, going to configure it really fast. I feel kind of like a nub atm, one moment run htop to see if it's using multiple threads i find it uses all cores without doing -threads Just type -thread 4 to use whole quad-core? Is it possible for me to encode to libvpx with more than one core? It's so slow. accually i should first rotate, than scale it 1/2 and then pad back to landscape? transpose,pad,scale or transpose,scale,pad or scale,transpose,pad though pad,transpose,scale and pad,scale,transpose are also valid Let's say you have a 9:16 picture of a tree, the tree is growing up. Didn't you want the picture to be portrait? look i have a landscape image in 16:9, but i accually just want to rotate it and resize it so that it fit in the center you will have to crop most of the image and it will look terrible though even if i say -s 640x360 (which is landscape)

if i use rotate i get a portrait output.

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Ffmpeg crop and rotate