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• Shotdetect : compiling error ("undefined reference")

  8 juillet 2015, par Voprosnik

  I am using Cygwin and I trying to install the program Shotdetect. I downloaded the source with git and also downloaded, compiled and installed ffmpeg through git.

  Installation of shotdetect doesn’t follow the ./configure && make && make install routine, but a cmake system of which I have no experience. Nonetheless there is a script that automates compiling and installation.

  Near the final stages of the compiling, I get a long series of errors concerning some ffmpeg modules :

  Linking CXX executable shotdetect-cmd.exe
  
  /usr/local/lib/libavformat.a(matroskadec.o): In function `matroska_decode_buffer':
  
  /git/ffmpeg/libavformat/matroskadec.c:1321: undefined reference to `BZ2_bzDecompressInit'
  
  /git/ffmpeg/libavformat/matroskadec.c:1336: undefined reference to `BZ2_bzDecompress'
  
  /git/ffmpeg/libavformat/matroskadec.c:1329: undefined reference to `BZ2_bzDecompressEnd'
  
  /git/ffmpeg/libavformat/matroskadec.c:1339: undefined reference to `BZ2_bzDecompressEnd'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /git/ffmpeg/libavcodec/opusdec.c:374: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /git/ffmpeg/libavcodec/opusdec.c:220: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_init_resample':
  
  /git/ffmpeg/libavcodec/opusdec.c:161: undefined reference to `swr_init'
  
  /git/ffmpeg/libavcodec/opusdec.c:167: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /git/ffmpeg/libavcodec/opusdec.c:234: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_flush_resample':
  
  /git/ffmpeg/libavcodec/opusdec.c:115: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /git/ffmpeg/libavcodec/opusdec.c:406: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_flush':
  
  /git/ffmpeg/libavcodec/opusdec.c:567: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_close':
  
  /git/ffmpeg/libavcodec/opusdec.c:589: undefined reference to `swr_free'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_init':
  
  /git/ffmpeg/libavcodec/opusdec.c:642: undefined reference to `swr_alloc'
  
  /usr/local/lib/libavcodec.a(tiff.o): In function `tiff_uncompress_lzma':
  
  /git/ffmpeg/libavcodec/tiff.c:396: undefined reference to `lzma_stream_decoder'
  
  /git/ffmpeg/libavcodec/tiff.c:401: undefined reference to `lzma_code'
  
  /git/ffmpeg/libavcodec/tiff.c:402: undefined reference to `lzma_end'
  
  /usr/local/lib/libavcodec.a(utils.o): In function `recode_subtitle':
  
  /git/ffmpeg/libavcodec/utils.c:2672: undefined reference to `libiconv_open'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2693: undefined reference to `libiconv'
  
  /git/ffmpeg/libavcodec/utils.c:2694: undefined reference to `libiconv'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /git/ffmpeg/libavcodec/utils.c:2707: undefined reference to `libiconv_close'
  
  /usr/local/lib/libavcodec.a(utils.o): In function `avcodec_open2':
  
  /git/ffmpeg/libavcodec/utils.c:1698: undefined reference to `libiconv_open'
  
  /git/ffmpeg/libavcodec/utils.c:1705: undefined reference to `libiconv_close'
  
  collect2: error: ld returned 1 exit status
  
  clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
  
  CMakeFiles/shotdetect-cmd.dir/build.make:122: recipe for target 'shotdetect-cmd.exe' failed
  
  make[2]: *** [shotdetect-cmd.exe] Error 1
  
  CMakeFiles/Makefile2:95: recipe for target 'CMakeFiles/shotdetect-cmd.dir/all' failed
  
  make[1]: *** [CMakeFiles/shotdetect-cmd.dir/all] Error 2
  
  Makefile:117: recipe for target 'all' failed
  
  make: *** [all] Error 2

  Searching online for similar errors, I found the following proposed solutions

  1) fix pkg-config setup so configure will find out all dependencies ;

  2) build ffmpeg (libavcodec) without external dependencies ;

  3) add external dependencies manually with configure —extra-ldflags

  I guess the problem lies on how i compiled ffmpeg (just configure with no options) but other than that have no idea what to do with either of the above suggestions. Should I recompile ffmpeg with different options ?

• Bash script having custom functions not running under systemd service

  13 août, par nightcrawler

  I have this script to get images from a webcam & process them via RKNN NPU

  


  #!/bin/bash

# Define the temporary directory for images
TEMP_DIR="/media/32GB/pics"
# Define the resize/letterbox option
RESIZE_OPTION="letterbox"  # or "letterbox" depending on your requirement
# Define the output image path pattern
OUTPUT_IMAGE_PATH="/media/32GB/processed_pics/%Y-%m-%d_%H-%M-%S_processed.jpg"
# Define the path to the rknn_yolov5_demo_Linux binar
BINARY_PATH="$HOME/ezrknn-toolkit2/rknpu2/examples/rknn_yolov5_demo/install/rknn_yolov5_demo_Linux"
# Define ntfy variables
NTFY_URL="https://ntfy.org/ho"
NTFY_USER="xxx"
NTFY_PASS="xxxx"

# Empty existing content
rm "$TEMP_DIR"/*
# Function to run ffmpeg and write images to temporary files
run_ffmpeg() {
    v380 -u xxxx -p xxxx -addr 192.168.1.xxx | ffmpeg -i - -f image2 -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" -y
}

# Function to run rknn_yolov5_demo_Linux and process images from temporary files
run_rknn_yolov5_demo() {
    while true; do
        # Find the most recent image file in the temporary directory
        IMAGE_PATH=$(ls -t "$TEMP_DIR"/*.jpg | head -n 1)

        # Check if the image path is not empty
        if [ -n "$IMAGE_PATH" ]; then
            # Define the output image path
            OUTPUT_IMAGE=$(date +"$OUTPUT_IMAGE_PATH")

            # Change to the binary directory and set LD_LIBRARY_PATH
            DETECTION_OUTPUT=$(cd "$BINARY_PATH" && LD_LIBRARY_PATH=./lib ./rknn_yolov5_demo ./model/RK3566_RK3568/yolov5s-640-640.rknn "$IMAGE_PATH" "$RESIZE_OPTION" "$OUTPUT_IMAGE")

            # Check if the detection output contains the word "person"
            if echo "$DETECTION_OUTPUT" | grep -q "person"; then
                echo "Human detected. Saving processed image to $OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
                # Upload the image using the imgur binary and capture the link
                UPLOAD_OUTPUT=$(imgur "$OUTPUT_IMAGE")
                UPLOAD_LINK=$(echo "$UPLOAD_OUTPUT" | grep -m 1 '^http')

                if [ -n "$UPLOAD_LINK" ]; then
                    echo "Image uploaded successfully. Link: $UPLOAD_LINK"
                    # Send ntfy notification with the image link
                    curl -u $NTFY_USER:$NTFY_PASS -H "tags:rotating_light" -H "Attach:$UPLOAD_LINK" -d "Human detected" $NTFY_URL
                else
                    echo "Failed to upload image."
                fi
            else
                rm "$OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
            fi
        fi

        # Sleep for a short period to avoid high CPU usage
        sleep 1
    done
}


# Run ffmpeg and rknn_yolov5_demo_Linux in the background
run_ffmpeg &
run_rknn_yolov5_demo &


  


  & the corresponding .service file

  


  [Unit]
Description=Process Images with rknn_yolov5_demo
After=network.target
#StartLimitIntervalSec=60
#StartLimitBurst=5

[Service]
Type=simple
ExecStartPre=/bin/sleep 30
ExecStart=/home/xxx/process_images_rknn.sh
Restart=always
RestartSec=3
TimeoutStartSec=60

[Install]
WantedBy=default.target


  


  Now last x2 lines of script are creating problems.

  


  Case1] If I keep like this htop shows no initiation of ffmpeg nor rknn Binaries

  


  Case2] I removed & from both lines then only ffmpeg runs but rknn is nowhere in htop

  


  Case3] Only this case works

  


  run_ffmpeg &
run_rknn_yolov5_demo


  


  I am reloading systemctl daemon & restarting service after script modification in each case

  


• muxing DVB subtitles into transport stream with ffmpeg

  28 novembre 2019, par user3439130

  So i have H264 video + AAC audio muxed inside transport stream (*.ts). To achive evenly spread PCR values i added muxrate tag to my command.

  ffmpeg -analyzeduration 20000000 -probesize 20M -loglevel verbose -i 1135084.m4v -i 1135084.m4a -c copy -muxrate 7982K -map 0:v:0 -map 1:a:0 -metadata:s:a:0 language=eng -metadata:s:a:0 tms_track_id=169451954 TEMP0.ts

  Since our client need DVB substitles we convert SRT to DVD with subtitle edit and then encode them to DVB with ffmpeg with this command :

  ffmpeg -analyzeduration 20000000 -probesize 20M -loglevel verbose -i TEMP0.ts -i out.da.idx -map 0 -c copy -muxrate 7992K -map 1:s -c:s:0 dvbsub -metadata:s:s:0 language=dan TEMP1.ts

  here is output from ffmpeg command :

  ffmpeg version git-2019-11-18-d831edc Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.2.1 (GCC) 20191010
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  
    libavutil      56. 36.100 / 56. 36.100
  
    libavcodec     58. 62.100 / 58. 62.100
  
    libavformat    58. 35.100 / 58. 35.100
  
    libavdevice    58.  9.101 / 58.  9.101
  
    libavfilter     7. 66.100 /  7. 66.100
  
    libswscale      5.  6.100 /  5.  6.100
  
    libswresample   3.  6.100 /  3.  6.100
  
    libpostproc    55.  6.100 / 55.  6.100
  
  [h264 @ 000002bf7460d400] non-existing SPS 0 referenced in buffering period
  
  [h264 @ 000002bf7460d400] SPS unavailable in decode_picture_timing
  
  [h264 @ 000002bf7460d400] non-existing SPS 0 referenced in buffering period
  
  [h264 @ 000002bf7460d400] SPS unavailable in decode_picture_timing
  
  [h264 @ 000002bf7460d400] Reinit context to 1920x1088, pix_fmt: yuv420p
  
  [mpegts @ 000002bf7460ae00] max_analyze_duration 20000000 reached at 20000000 microseconds st:0
  
  [mpegts @ 000002bf7460ae00] start time for stream 2 is not set in estimate_timings_from_pts
  
  Input #0, mpegts, from 'TEMP1.ts':
  
    Duration: 01:51:54.48, start: 1.440000, bitrate: 7992 kb/s
  
    Program 1
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: h264 (High), 1 reference frame ([27][0][0][0] / 0x001B), yuv420p(progressive, left), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0x101](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 254 kb/s
  
      Stream #0:2[0x102](dan): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
  [vobsub @ 000002bf75d65940] IDX/SUB: out.fi.idx -> out.fi.sub
  
  Input #1, vobsub, from 'out.fi.idx':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0[0x0](fi): Subtitle: dvd_subtitle, 1920x1080 (default)
  
  File 'TEMP2.ts' already exists. Overwrite? [y/N] y
  
  [mpegts @ 000002bf74634f00] service 1 using PCR in pid=256, pcr_period=20ms
  
  [mpegts @ 000002bf74634f00] muxrate 8002000, sdt every 500 ms, pat/pmt every 100 ms
  
  Output #0, mpegts, to 'TEMP2.ts':
  
    Metadata:
  
      encoder         : Lavf58.35.100
  
      Stream #0:0: Video: h264 (High), 1 reference frame ([27][0][0][0] / 0x001B), yuv420p(progressive, left), 1920x1080 (0x0) [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 90k tbc
  
      Stream #0:1(eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 254 kb/s
  
      Stream #0:2(dan): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
      Stream #0:3(fin): Subtitle: dvb_subtitle (dvbsub), 1920x1080 (default)
  
      Metadata:
  
        encoder         : Lavc58.62.100 dvbsub
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
    Stream #0:2 -> #0:2 (copy)
  
    Stream #1:0 -> #0:3 (dvd_subtitle (dvdsub) -> dvb_subtitle (dvbsub))
  
  Press [q] to stop, [?] for help
  
  No more output streams to write to, finishing.me=01:51:46.51 bitrate=7990.2kbits/s speed=18.2x
  
  frame=167862 fps=456 q=-1.0 Lsize= 6558750kB time=01:51:54.47 bitrate=8002.0kbits/s speed=18.2x
  
  video:5738580kB audio:212004kB subtitle:10989kB other streams:0kB global headers:0kB muxing overhead: 10.017118%
  
  Input file #0 (TEMP1.ts):
  
    Input stream #0:0 (video): 167862 packets read (5876305439 bytes);
  
    Input stream #0:1 (audio): 314742 packets read (217092443 bytes);
  
    Input stream #0:2 (subtitle): 1740 packets read (5578504 bytes);
  
    Total: 484344 packets (6098976386 bytes) demuxed
  
  Input file #1 (out.fi.idx):
  
    Input stream #1:0 (subtitle): 855 packets read (6881158 bytes); 854 frames decoded;
  
    Total: 855 packets (6881158 bytes) demuxed
  
  Output file #0 (TEMP2.ts):
  
    Output stream #0:0 (video): 167862 packets muxed (5876305439 bytes);
  
    Output stream #0:1 (audio): 314742 packets muxed (217092443 bytes);
  
    Output stream #0:2 (subtitle): 1740 packets muxed (5578504 bytes);
  
    Output stream #0:3 (subtitle): 1708 frames encoded; 1708 packets muxed (5673736 bytes);
  
    Total: 486052 packets (6104650122 bytes) muxed
  
  [AVIOContext @ 000002bf7463c280] Statistics: 0 seeks, 25621 writeouts
  
  [AVIOContext @ 000002bf74613f80] Statistics: 6728300448 bytes read, 2 seeks
  
  [AVIOContext @ 000002bf75efde40] Statistics: 7852032 bytes read, 0 seeks
  
  [AVIOContext @ 000002bf74f30e40] Statistics: 40275 bytes read, 0 seeks

  So i have video/audio and two dvb tracks inside one TS.

  Now im adding third subtitle and i get this warning :

  frame=32351 fps=869 q=-1.0 size= 1255936kB time=00:21:33.99 bitrate=7951.1kbits/s speed=34.8x
  
  [mpegts @ 0x2994600] Non-monotonous DTS in output stream 0:3; previous: 116868609, current: 116868607; changing to 116868610. This may result in incorrect timestamps in the output file.
  
  frame=33416 fps=886 q=-1.0 size= 1297408kB time=00:22:16.56 bitrate=7952.0kbits/s speed=35.4x

  By this warning it seems that something is not right with DVB (0:3) Finish track.
  Playing back the file with VLC i can see that Finish subtitles (between 21:33 and 22:16) are not showing up.

  Dumping packets from 0:3 track i see that 4 packets have the same DTS/PTS values.

  #stream#, dts,        pts, duration,     size, hash
  
  0,  111258000,  111258000,        0,     6979, 6215f060, S=1,        1, 67d220bc
  
  0,  111689100,  111689100,        0,       25, e60e94fa, S=1,        1, 67d220bc
  
  0,  113230800,  113230800,        0,     4423, f811be62, S=1,        1, 67d220bc
  
  0,  113561550,  113561550,        0,       25, 6db8d81f, S=1,        1, 67d220bc
  
  0,  113788800,  113788800,        0,     8247, 8b494779, S=1,        1, 67d220bc
  
  0,  114191190,  114191190,        0,       25, a205e183, S=1,        1, 67d220bc
  
  
  
  0,  116868607,  116868607,        0,     1119, e5d11188, S=1,        1, 67d220bc
  
  0,  116868607,  116868607,        0,       28, 11e09861, S=1,        1, 67d220bc
  
  0,  116868607,  116868607,        0,     1122, 8320a3f5, S=1,        1, 67d220bc
  
  0,  116868607,  116868607,        0,       28, e896fa37, S=1,        1, 67d220bc
  
  
  
  0,  117205200,  117205200,        0,     3583, 47b23f27, S=1,        1, 67d220bc
  
  0,  117611640,  117611640,        0,       25, e5ae32ed, S=1,        1, 67d220bc
  
  0,  117709200,  117709200,        0,     1119, 208b4f80, S=1,        1, 67d220bc
  
  0,  117830970,  117830970,        0,       25, 2a130b71, S=1,        1, 67d220bc
  
  0,  117846000,  117846000,        0,     3105, f179a4f0, S=1,        1, 67d220bc
  
  0,  118148040,  118148040,        0,       25, 29b3ad66, S=1,        1, 67d220bc
  
  0,  120146410,  120146410,        0,     1119, 714ef5d1, S=1,        1, 67d220bc
  
  0,  120146410,  120146410,        0,       28, bbad7fed, S=1,        1, 67d220bc
  
  0,  120708000,  120708000,        0,     2060, 703084f7, S=1,        1, 67d220bc
  
  0,  120855420,  120855420,        0,       25, 6db8d81f, S=1,        1, 67d220bc
  
  0,  121122000,  121122000,        0,     2184, 04a7be71, S=1,        1, 67d220bc
  
  0,  121395330,  121395330,        0,       25, a205e183, S=1,        1, 67d220bc

  Thes are the lines from SRT file where the warning happens :

  146
  
  00:21:34,840 --> 00:21:36,600
  
  Make!
  
  147
  
  00:21:42,280 --> 00:21:46,800
  
  Make! Hei, Make. Make!
  
  148
  
  00:21:47,880 --> 00:21:49,240
  
  Make!
  
  149
  
  00:21:49,400 --> 00:21:52,760
  
  Odota minua, Make!
  
  150
  
  00:22:00,400 --> 00:22:01,760
  
  Make!

  Sometimes muxing subtitles in different order (for example Finish before Danish and then Swedish) would solve this problem, but i would like to know why such things are happening.