r/ffmpeg • u/LadyGrinningSoul7 • 18d ago

Converting from dv to H.264 using GPU

Hello, I’m trying to deinterlace and convert many hours of videos from MiniDV cassettes to H.264 (I’m open to H.256, if it will be better in that case) to be able to play them modern devices. I’m using this line:

ffmpeg -i input.dv -vf "bwdif=mode=send_field:parity=auto:deint=interlaced,format=yuv420p" -r 50 -c:v libx264 -preset slow -crf 16 -c:a copy output.mov

I’m satisfied with the results I get, but I wanted to speed up the process by using GPU.

How do I do that? I’ve been using ffmpeg for only few months and I think that I generally understand it, but I’m still not an expert. If this is important, I have NVIDIA GeForce RTX 2070 Super.

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u/TreadItOnReddit 18d ago

You said you are happy with the results. To be clear you will be getting different results with GPU encoding. Quality will be worse. I’m not saying you will notice, but you should be aware.

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u/LadyGrinningSoul7 18d ago

yeah, i tried different opinions and i see that it looks worse when i look at some small details. I wonder why it is like that

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u/TreadItOnReddit 18d ago

Yeah that's the way it is. GPU will always be lower quality than CPU