[FFmpeg-user] 6720x1200 proRes to wmv

[Jim Shupert]

An intresting matter - just thought I would share.

Goal a 6720x1200 proRes into a wmv

once upon a time i *thought I had seen where the minimum size supported 
was 80x80 & the max was 4096x4096 ... but I cannot find anything 
(google) now.

I Can make 3360 x 600 1680 x 300.

I have tried declaring the frm size and pix_fmt ... but anytime I try to 
make the size of 6720x1200 i see difficulties.


I find it interesting that the mov reports to be :

SAR 6720:6720

ffmpeg -i
/media/data/p/Barrier_4_Rough_5.mov  -b:v 20000k -vcodec wmv2  -s 3360x600
-ar 48000 -b:a 224k -ac 2 -y /media/data/p/Barrier_4_Rough_5-21j.wmv
ffmpeg version git-2013-06-03-b4d4ef5 Copyright (c) 2000-2013 the FFmpeg
developers
   built on Jun  3 2013 16:50:07 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
   configuration: --extra-libs=-ldl --enable-gpl --enable-libass
--enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libspeex --enable-libtheora
--enable-libvorbis --enable-libopus --enable-libvpx --enable-x11grab
--enable-libx264 --enable-nonfree --enable-version3
   libavutil      52. 34.100 / 52. 34.100
   libavcodec     55. 15.100 / 55. 15.100
   libavformat    55.  8.102 / 55.  8.102
   libavdevice    55.  2.100 / 55.  2.100
   libavfilter     3. 74.101 /  3. 74.101
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/media/data/p/Barrier_4_Rough_5.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2014-04-11 19:17:15
   Duration: 00:01:56.45, start: 0.000000, bitrate: 670036 kb/s
     Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le,
6720x1200, 668428 kb/s, SAR 6720:6720 DAR 28:5, 23.98 fps, 23.98 tbr,
24k tbn, 24k tbc
     Metadata:
       creation_time   : 2014-04-11 19:17:15
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:07:12
     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz,
stereo, s16, 1536 kb/s
     Metadata:
       creation_time   : 2014-04-11 19:17:15
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:07:12
     Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
     Metadata:
       creation_time   : 2014-04-11 19:17:15
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:07:12
Output #0, asf, to '/media/data/p/Barrier_4_Rough_5-21j.wmv':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     WM/EncodingSettings: Lavf55.8.102
     Stream #0:0(eng): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 3360x600
[SAR 1:1 DAR 28:5], q=2-31, 20000 kb/s, 1k tbn, 23.98 tbc
     Metadata:
       creation_time   : 2014-04-11 19:17:15
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:07:12
     Stream #0:1(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz,
stereo, fltp, 224 kb/s
     Metadata:
       creation_time   : 2014-04-11 19:17:15
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:07:12
Stream mapping:
   Stream #0:0 -> #0:0 (prores -> wmv2)
   Stream #0:1 -> #0:1 (pcm_s16le -> wmav2)
Press [q] to stop, [?] for help
warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=15899.2kbits/s
warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=16016.5kbits/s
frame=  491 fps=9.3 q=2.0 Lsize=   41048kB time=00:00:20.95
bitrate=16050.8kbits/s
video:40016kB audio:574kB subtitle:0 global headers:0kB muxing overhead
1.129518%


one gets some of this

warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=29186.8kbits/s
warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=29412.8kbits/s
[wmv2 @ 0x38ad720] warning, clipping 1 dct coefficients to -255..255
     Last message repeated 5 times
warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=29566.8kbits/s
warning, clipping 1 dct coefficients to -255..255:00:20.95
bitrate=29802.6kbits/s
warning, clipping 1 dct coefficients to -255..255:00:21.97
bitrate=28917.1kbits/s
warning, clipping 1 dct coefficients to -255..255:00:23.97
bitrate=28238.4kbits/s
warning, clipping 1 dct coefficients to -255..255:00:24.96
bitrate=27660.8kbits/s
[wmv2 @ 0x38ad720] warning, clipping 1 dct coefficients to -255..255

which I would be interested in knowing more about that
In VLC the color is all shited , like the colorspace is wrong.

I can play in ffplay if I
ffplay -vf "scale=1680:300" -i /media/data/p/Barrier_4_Rough_5-30_j.wmv
and the color is normal

Mostly this is just bit of fun I thought I would share ... see what 
others might say.

and If you are wondering WHY someone wishes for a wmv that is 
6720x1200.....???
I am told they wish to play it in a power point.   wow ---- really
so winders all the way.
I was not successful in finding win info on max supported frm size for wmp.

cheers.

jS
It is the kinda thing ....that makes one smile