[FFmpeg-user] Image Conversion TIFF > JPEG with yuv422 chroma subsampling

Andrea Rastelli a.rastelli at rbw-cgi.it
Tue Jan 20 17:16:47 CET 2015

On 19/01/2015 22:10, Moritz Barsnick wrote:
> To add to Werner's comments:
> On Mon, Jan 19, 2015 at 18:05:34 +0100, Andrea Rastelli wrote:
>>>> Also, the only codec that works is the MJPEG, any other codec produces
>>>> unreadable images or extremely slow-to-process images (libopenjpeg)..
> I can't comment on slow-to-process images, but there's a section on the
> readability. It's not obvious, so thanks for asking. ;-)
> https://www.ffmpeg.org/ffmpeg-bitstream-filters.html#mjpeg2jpeg
> So please check whether adding "-bsf:v mjpeg2jpeg" (after the input
> file, before the output file - just saying this to be sure) solves that
> issue.
> Moritz
I'm sorry but even with your help seems impossible to properly convert 
my images.
Actually I'm using ImageMagick with success for both quality 
(non-blocky) and chroma-subsampling 4:4:4 (or 4:2:2).

Thanks a lot for your help to better understand ffmpeg :-)

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