[FFmpeg-user] Building for ARM

[JITENDRA SINGH]

Just to update, this problem was solved.
error: symbol not found "ff_find_pix_fmt", its a function defined in
rawdec.c in libavcodec, but this file not compiled as rawvideo decoder is
not enabled in ./configure, so enabled it using --enable-decoder=rawvideo.

Thanks,
Naruka

On Fri, Jun 10, 2011 at 12:14 PM, JITENDRA SINGH <narukajsingh at gmail.com>wrote:

> Hi,
>
> Were you able to solve this problem:
> undefined reference to `ff_find_pix_fmt'
>
> I am facing the same while trying to build for arm9..
>
> PS: I face this warning "pkg-config not found, library detection may fail" during ./configure.
>
> Thank you,
> Naruka
>
> ================================
> Hi all,
>
> I'm building ffmpeg for an ARM with Linux headers 2.6 to send video frames over RTP, ffmpeg only have to packet these frames and send it. I need to optimize the space so I use the minimal configuration.
>
> I have compile the revision 26400 with this configuration and works fine:
>
> ./configure --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static --disable-ffprobe
>
> I use with this command (with this output):
>
> # ffmpeg -vcodec copy -i pipe -an -f rtp rtp://224.52.52.22:7004 -sameq -v 0 < /dev/null &
> [3] 178
> # FFmpeg version SVN-r26400, Copyright (c) 2000-2011 the FFmpeg developers
>   built on Jan 18 2011 09:48:17 with gcc 4.1.2
>   configuration: --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static
>   libavutil     50.36. 0 / 50.36. 0
>   libavcore      0.16. 1 /  0.16. 1
>   libavcodec    52.108. 0 / 52.108. 0
>   libavformat   52.93. 0 / 52.93. 0
>   libavdevice   52. 2. 3 / 52. 2. 3
>   libavfilter    1.74. 0 /  1.74. 0
>   libswscale     0.12. 0 /  0.12. 0
> puntero a frame (fis): 0xc2780004
> [m4v @ 0x3538a0] max_analyze_duration reached
> [m4v @ 0x3538a0] Estimating duration from bitrate, this may be inaccurate
> Input #0, m4v, from 'pipe':
>   Duration: N/A, bitrate: N/A
>     Stream #0.0: Video: [0][0][0][0] / 0x0000, 352x288 [PAR 1:1 DAR 11:9], 25 fps, 25 tbr, 1200k tbn, 25 tbc
> Output #0, rtp, to 'rtp://224.52.52.22:7004':
>   Metadata:
>     encoder         : Lavf52.93.0
>     Stream #0.0: Video: [0][0][0][0] / 0x0000, 352x288 [PAR 1:1 DAR 11:9], q=2-31, 90k tbn, 25 tbc
> Stream mapping:
>   Stream #0.0 -> #0.0
> SDP:
> v=0
> o=- 0 0 IN IP4 127.0.0.1
> s=No Name
> c=IN IP4 224.52.52.22
> t=0 0
> a=tool:libavformat 52.93.0
> m=video 7004 RTP/AVP 96
> a=rtpmap:96 MP4V-ES/90000
> a=fmtp:96 profile-level-id=1; config=000001B003000001B50900000100000001200086C400668582120A31
>
> Press [q] to stop encoding
>
>
> If I try to use the version 0.6.3, I can compile it fine, but it doesn't work, i get this output:
>
> # ./ffmpeg.last -vcodec copy -i pipe -an -f rtp rtp://224.52.52.22:7004 -sameq -re
> FFmpeg version 0.6.3, Copyright (c) 2000-2010 the FFmpeg developers
>   built on May 12 2011 13:00:49 with gcc 4.1.2
>   configuration: --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static --disable-ffprobe
>   libavutil     50.15. 1 / 50.15. 1
>   libavcodec    52.72. 2 / 52.72. 2
>   libavformat   52.64. 2 / 52.64. 2
>   libavdevice   52. 2. 0 / 52. 2. 0
>   libswscale     0.11. 0 /  0.11. 0
> [m4v @ 0x30e360]max_analyze_duration reached
> [m4v @ 0x30e360]Estimating duration from bitrate, this may be inaccurate
> Input #0, m4v, from 'pipe':
>   Duration: N/A, bitrate: N/A
>     Stream #0.0: Video: 0x0000, 352x288 [PAR 1:1 DAR 11:9], 25 fps, 25 tbr, 1200k tbn, 25 tbc
>
>
> And doesn't sent anything.
>
> My question is I how can I debug it or if I'm doing anything wrong.
>
> I also try to use the last version or the 0.7.rc1 but both doesn't compile, I get this error:
>
> /home/john/ffmpeg/ffmpeg-0.7-rc1/libavformat/libavformat.a(utils.o): In function `.L2670':
> utils.c:(.text+0x928c): undefined reference to `ff_find_pix_fmt'
> collect2: ld returned 1 exit status
> make: *** [ffmpeg_g] Error 1
>
> Thanks for the answers.
>
> Wernam
> ==========================================
>
>