[FFmpeg-user] Fwd: Re: 6720x1200 proRes to wmv

[Jim Shupert]

-------- Original Message --------
Subject: 	Re: [FFmpeg-user] 6720x1200 proRes to wmv
Date: 	Wed, 16 Apr 2014 12:45:11 -0400
From: 	Jim Shupert <jshupert at pps-inc.com>
To: 	FFmpeg user questions <ffmpeg-user at ffmpeg.org>



On 4/16/2014 10:39 AM, Carl Eugen Hoyos wrote:
> Jim Shupert <jshupert <at> pps-inc.com> writes:
>
>> It is an interesting matter -- total supported frame
>> size in different players.
>> QT (win&mac) seems very forgiving - a high cieling
>> VLC , mplayer , win media player all tend to hollar
>> " 6720 x 1200 is to big " & fail .
> I tested the following:
> $ ffmpeg -f lavfi -i testsrc=6720x1200 -qscale 2 out.avi
>
> MPlayer (and vlc) has no problems with the output file.
>
>
Thanks Carl,

I tried that here

ffmpeg -f lavfi -i testsrc=6720x1200 -qscale 2 /media/data/p/jimiTst1.avi
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, lavfi, from 'testsrc=6720x1200':
    Duration: N/A, start: 0.000000, bitrate: N/A
      Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 6720x1200
[SAR 1:1 DAR 28:5], 25 tbr, 25 tbn, 25 tbc
Please use -q:a or -q:v, -qscale is ambiguous
Output #0, avi, to '/media/data/p/jimiTst1.avi':
    Metadata:
      ISFT            : Lavf55.8.102
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 6720x1200 [SAR
1:1 DAR 28:5], q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
    Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
Press [q] to stop, [?] for help
frame=  158 fps=7.0 q=2.0 Lsize=    3739kB time=00:00:06.32
bitrate=4846.8kbits/s
video:3730kB audio:0kB subtitle:0 global headers:0kB muxing overhead
0.252163%
Received signal 2: terminating.

---
but for me that yield a file that plays badly in VLC [ 2.0.8 Twoflower ]
a diag pops up of
Your video output acceleration driver does not support the required
resolution: 6720x1200 pixels. The maximum supported resolution is
2046x1200.
Video output acceleration will be disabled. However, rendering videos with
overly large resolution may cause severe performance degration.

and my mplayer -- just failes to show anything

MPlayer svn r34540 (Ubuntu), built with gcc-4.6 (C) 2000-2012 MPlayer Team


i do a 'simpler' test

   ffmpeg -f lavfi -i testsrc  -qscale 2 /media/data/p/jimiTst2.avi

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, lavfi, from 'testsrc':
    Duration: N/A, start: 0.000000, bitrate: N/A
      Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240
[SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc

there is a warning
Please use -q:a or -q:v, -qscale is ambiguous

Output #0, avi, to '/media/data/p/jimiTst2.avi':
    Metadata:
      ISFT            : Lavf55.8.102
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240 [SAR
1:1 DAR 4:3], q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
    Stream #0:0 -> #0:0 (rawvideo -> mpeg4)
Press [q] to stop, [?] for help
frame= 3856 fps=586 q=2.0 Lsize=    6578kB time=00:02:34.24 bitrate=
349.3kbits/s
video:6480kB audio:0kB subtitle:0 global headers:0kB muxing overhead
1.509310%
Received signal 2: terminating.

------

and that  , of course is just fine

so why do you- have no problems?