[FFmpeg-user] Error in scaling expression

[me at renecalles.de]

Thanks a lot,

i just found out it works on my Debian system with fresh compiled 
sources.

Sorry for bothering.


On Mon, 24 Oct 2011 16:22:19 +0200, Stefano Sabatini wrote:
> On date Monday 2011-10-24 14:58:12 +0200, me at renecalles.de encoded:
>> Hi all,
>>
>> as i'm trying to create a filter-chain for resizing using ffmpeg i
>> ran into the following issue:
>>
>> ffmpeg -i aspect_test.e25.ts -vf
>> "scale='320:(ih*ow)/(iw*sar)',pad='320:240:0:30',setdar=4:3" -y -f
>> ipod trial.m4v
>>
>> ffmpeg version 0.7.6, Copyright (c) 2000-2011 the FFmpeg developers
>> built on Oct  4 2011 15:25:01 with gcc 4.2.1 (Apple Inc. build 5666)
>> (dot 3)
>> configuration: --prefix=/opt/local --enable-gpl --enable-postproc
>> --enable-swscale --enable-avfilter --enable-libmp3lame
>> --enable-libvorbis --enable-libtheora --enable-libdirac
>> --enable-libschroedinger --enable-libopenjpeg --enable-libxvid
>> --enable-libx264 --enable-libvpx --enable-libspeex
>> --mandir=/opt/local/share/man --enable-shared --enable-pthreads
>> --cc=/usr/bin/gcc-4.2 --arch=x86_64 --enable-yasm
>> libavutil    50. 43. 0 / 50. 43. 0
>> libavcodec   52.122. 0 / 52.122. 0
>> libavformat  52.110. 0 / 52.110. 0
>> libavdevice  52.  5. 0 / 52.  5. 0
>> libavfilter   1. 80. 0 /  1. 80. 0
>> libswscale    0. 14. 1 /  0. 14. 1
>> libpostproc  51.  2. 0 / 51.  2. 0
>> [mpegts @ 0x102051000] max_analyze_duration 5000000 reached at 
>> 5000000
>> Input #0, mpegts, from 'aspect_test.e25.ts':
>> Duration: 00:02:46.96, start: 0.595556, bitrate: 2815 kb/s
>> Program 2
>> Stream #0.0[0x21]: Video: h264 (Main), yuv420p, 720x576 [PAR 64:45
>> DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
>> Stream #0.1[0x24](ger): Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
>> [buffer @ 0x10192e9c0] w:720 h:576 pixfmt:yuv420p tb:1/1000000
>> sar:64/45 sws_param:
>> [setdar @ 0x10192f560] a:4/3
>> [scale @ 0x10192eee0] [Eval @ 0x7fff5fbfe4a0] Undefined constant or
>> missing '(' in 'sar)'
>> Error when evaluating the expression '(ih*ow)/(iw*sar)'
>>
>>
>> Is the sar variable missing or deprecated or something? Or am i'm
>> doing something completely wrong?
>
> You need libavfilter >= 2.24.2, check commit
> 01151a26c03c5df85509150d393e039f574d005f.
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