[FFmpeg-user] Problem with -vf fillborders on 16 bit image

[Ulf Zibis]

Am 11.03.19 um 20:14 schrieb Carl Eugen Hoyos:
> 2019-03-11 20:05 GMT+01:00, Ulf Zibis <Ulf.Zibis at gmx.de>:
>> Am 09.03.19 um 10:58 schrieb Carl Eugen Hoyos:
>>> 2019-03-09 10:44 GMT+01:00, Ulf Zibis <Ulf.Zibis at gmx.de>:
>>>> Which format should I use with option -f ?
>>> You should never need the option -f (except when reading
>>> raw g.729 and similar rare raw formats), what did you try?
>> When I use
>> $ ffmpeg -i 16.jpg -vf fillborders=25:25:25:25:mirror 16_mirror-25.jpg
>> then the output is 8-bit rgb.
> This seems unlikely as our "jpg" encoder does not support
> encoding rgb.
Oops, I partly was in error. But the output is 8-bit instead 16-bit and
yuv instead y.

What I have to do, if I want the same format for the output, as it is
for the input?

$ ./ffmpeg -i debug/16.jpg -vf fillborders=25:25:25:25:mirror
debug/16_mirror-25.jpg
ffmpeg version N-93301-gf95aee2b72 Copyright (c) 2000-2019 the FFmpeg
developers
  built with gcc 7 (Ubuntu 7.3.0-27ubuntu1~18.04)
  configuration:
  libavutil      56. 26.100 / 56. 26.100
  libavcodec     58. 47.103 / 58. 47.103
  libavformat    58. 26.101 / 58. 26.101
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 48.100 /  7. 48.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
Input #0, image2, from 'debug/16.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 103852 kb/s
    Stream #0:0: Video: mjpeg (Lossless),
gray16le(bt470bg/unknown/unknown), 640x480 [SAR 96:96 DAR 4:3],
lossless, 25 tbr, 25 tbn, 25 tbc
File 'debug/16_mirror-25.jpg' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0x555de22ba600] deprecated pixel format used, make sure you
did set range correctly
Output #0, image2, to 'debug/16_mirror-25.jpg':
  Metadata:
    encoder         : Lavf58.26.101
    Stream #0:0: Video: mjpeg, yuvj444p(pc), 640x480 [SAR 1:1 DAR 4:3],
q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.47.103 mjpeg
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame=    1 fps=0.0 q=6.0 Lsize=N/A time=00:00:00.04 bitrate=N/A
speed=0.448x   
video:33kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown

$ mediainfo debug/16.jpg
General
Complete name                            : debug/16.jpg
Format                                   : JPEG
File size                                : 507 KiB

Image
Format                                   : JPEG
Width                                    : 640 pixels
Height                                   : 480 pixels
Color space                              : Y
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 507 KiB (100%)

$ mediainfo debug/16_mirror-25.jpg
General
Complete name                            : debug/16_mirror-25.jpg
Format                                   : JPEG
File size                                : 33.5 KiB

Image
Format                                   : JPEG
Width                                    : 640 pixels
Height                                   : 480 pixels
Color space                              : YUV
Bit depth                                : 8 bits
Compression mode                         : Lossy
Stream size                              : 33.5 KiB (100%)

-Ulf