On Thu, Dec 14, 2023 at 7:07 AM Dave F via ffmpeg-user <ffmpeg-user@ffmpeg.org> wrote:
> I wish to use ffmpeg. > > I've tried ImageMagick with various command combinations. None come > anywhere as near as that ffmpeg command in terms of clarity & file > size reduction. The file size reduction is based on the JPEG encoding options you choose: the compression quality (more compression = smaller file but worse quality), whether the Huffman tables are optimized, whether a progressive or non-progressive JPEG is written, et. al. So just because the ffmpeg defaults align with your preferences doesn’t mean that you can’t achieve the same size/quality with a different tool. > Unless someone can categorically say 'ffmpeg can't do that' I'd like > to search for an answer in thif ffmpeg forum. If you want to use ffmpeg, another option would be to use ffmpeg to perform the resize, but then use a different tool to copy the EXIF metadata. E.g.: $ ffmpeg -i Input.JPG -vf scale="iw*.5:-1" -update true Output.jpg $ touch -r Input.JPG Output.jpg $ exiftool -args -G1 --filename --directory Input.JPG | exiftool -P -@ - -sep ', ' Output.jpg In English, the exiftool command pipe dumps the metadata from Input.JPG and then writes the resulting metadata to Output.jpg. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
