Batch encode GoPRO 4K H265 to H265 with ffmpeg

batch-encode.md

Use case

Filming with GoPro with H.265, but editing with software which does not support H.265 (like Magix FastCut). Let's convert all those files to H.264, leveraging GPU (like NVidia RTX 3070 -> ~2x speed at 4K->4K)

One liner

for f in *.MP4; do ffmpeg -hwaccel cuvid -i "$f" -map 0 -c copy -c:v h264_nvenc -qp 20 -tune hq -crf 25 -preset slow h264vids/"${f%.*}.mp4"; done