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• FFMPEG hangs (sometimes) when trying to take a photo from USB camera ?

  13 mai 2022, par dezman

  I am attempting to write a script that takes a photo every 3 seconds from camera source "1", the -pix_fmt I think is unique to my USB camera.

  


  Here is the script :

  


  #!/bin/bash

set -e

while :
do
  nice_num=$(date +%s)
  
  ffmpeg -ss 00:00:00 -f avfoundation -pix_fmt yuyv422 -r 30.000030 -i "1" -t 1 -frames:v 1 -q:v 2 "image_$nice_num_%03d.jpg"
  
  wait

  sleep 3
done


  


  The issue is half the time it successfully takes the photo, and half the time it just hangs forever echoing this (not useful) :

  


  ffmpeg version 5.0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with Apple clang version 13.1.6 (clang-1316.0.21.2)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/5.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      57. 17.100 / 57. 17.100
  libavcodec     59. 18.100 / 59. 18.100
  libavformat    59. 16.100 / 59. 16.100
  libavdevice    59.  4.100 / 59.  4.100
  libavfilter     8. 24.100 /  8. 24.100
  libswscale      6.  4.100 /  6.  4.100
  libswresample   4.  3.100 /  4.  3.100
  libpostproc    56.  3.100 / 56.  3.100


  


  Then I CTRL-C 3 times and get :

  


  ^C^C^CReceived > 3 system signals, hard exiting


  


  Other methods of "taking a photo every n seconds from bash" are also appreciated.

  


• lavfi/dnn : Remove DNN native backend

  27 avril 2023, par Ting Fu

  lavfi/dnn : Remove DNN native backend
  According to discussion in
  
  https://etherpad.mit.edu/p/FF_dev_meeting_20221202 and the proposal in
  
  http://ffmpeg.org/pipermail/ffmpeg-devel/2022-December/304534.html,
  
  the DNN native backend should be removed at first step.
  
  All the DNN native backend related codes are deleted.
  Signed-off-by : Ting Fu <ting.fu@intel.com>
  

  • [DH] libavfilter/Makefile
  • [DH] libavfilter/dnn/Makefile
  • [DH] libavfilter/dnn/dnn_backend_native.c
  • [DH] libavfilter/dnn/dnn_backend_native.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_avgpool.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_avgpool.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_conv2d.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_conv2d.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_dense.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_dense.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_depth2space.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_depth2space.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathbinary.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathbinary.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathunary.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_mathunary.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_maximum.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_maximum.h
  • [DH] libavfilter/dnn/dnn_backend_native_layer_pad.c
  • [DH] libavfilter/dnn/dnn_backend_native_layer_pad.h
  • [DH] libavfilter/dnn/dnn_backend_native_layers.c
  • [DH] libavfilter/dnn/dnn_backend_native_layers.h
  • [DH] libavfilter/dnn/dnn_backend_tf.c
  • [DH] libavfilter/dnn_interface.h
  • [DH] libavfilter/tests/dnn-layer-avgpool.c
  • [DH] libavfilter/tests/dnn-layer-conv2d.c
  • [DH] libavfilter/tests/dnn-layer-dense.c
  • [DH] libavfilter/tests/dnn-layer-depth2space.c
  • [DH] libavfilter/tests/dnn-layer-mathbinary.c
  • [DH] libavfilter/tests/dnn-layer-mathunary.c
  • [DH] libavfilter/tests/dnn-layer-maximum.c
  • [DH] libavfilter/tests/dnn-layer-pad.c
  • [DH] libavfilter/vf_derain.c
  • [DH] libavfilter/vf_dnn_processing.c
  • [DH] libavfilter/vf_sr.c
  • [DH] tests/Makefile
  • [DH] tests/fate/dnn.mak

• Dockerized ffmpeg stops for no reason

  2 mai 2023, par Arthur Attout

  I'm trying to fire up a container that reads a video stream via ffmpeg and saves the stream as 30 seconds segments.

  


  When I run the container, it stops after 20-ish seconds and returns with no error.

  


  Here is my Dockerfile

  


  FROM linuxserver/ffmpeg
ENTRYPOINT ffmpeg -i rtsp://192.168.1.85:8554/camera -f v4l2 -c copy -reset_timestamps 1 -map 0 -f segment -segment_time 30 -segment_format mp4 "output/out%03d.mp4" -loglevel debug


  


  Here is the output when I run sudo docker run -it --rm -v /data/camera:/output --name camera_recorder camera_recorder:latest

  


  [+] Building 1.8s (5/5) FINISHED
 => [internal] load build definition from Dockerfile                                                                                                                                                                                                                      0.3s
 => => transferring dockerfile: 777B                                                                                                                                                                                                                                      0.0s
 => [internal] load .dockerignore                                                                                                                                                                                                                                         0.5s
 => => transferring context: 2B                                                                                                                                                                                                                                           0.0s
 => [internal] load metadata for docker.io/linuxserver/ffmpeg:latest                                                                                                                                                                                                      1.2s
 => CACHED [1/1] FROM docker.io/linuxserver/ffmpeg@sha256:823c611e0af82b864608c21d96bf363403310d92f154e238f6d51fe3d783e53b                                                                                                                                                0.0s
 => exporting to image                                                                                                                                                                                                                                                    0.1s
 => => exporting layers                                                                                                                                                                                                                                                   0.0s
 => => writing image sha256:f0509ccf0b07ff53d4aafa0d3b80fd50ed53e96db906c9a1e0e8c44e163dce94                                                                                                                                                                              0.1s
 => => naming to docker.io/library/camera_recorder                                                                                                                                                                                                                        0.0s
ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.3.0-1ubuntu1~22.04)
  configuration: --disable-debug --disable-doc --disable-ffplay --enable-ffprobe --enable-cuvid --enable-gpl --enable-libaom --enable-libass --enable-libfdk_aac --enable-libfreetype --enable-libkvazaar --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libxml2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-nonfree --enable-nvdec --enable-nvenc --enable-opencl --enable-openssl --enable-small --enable-stripping --enable-vaapi --enable-vdpau --enable-version3
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'rtsp://192.168.1.85:8554/camera'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'v4l2'.
Reading option '-c' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-reset_timestamps' ... matched as AVOption 'reset_timestamps' with argument '1'.
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'segment'.
Reading option '-segment_time' ... matched as AVOption 'segment_time' with argument '30'.
Reading option '-segment_format' ... matched as AVOption 'segment_format' with argument 'mp4'.
Reading option 'output/out%03d.mp4' ... matched as output url.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url rtsp://192.168.1.85:8554/camera.
Successfully parsed a group of options.
Opening an input file: rtsp://192.168.1.85:8554/camera.
[tcp @ 0x55c15e3eb040] No default whitelist set
[tcp @ 0x55c15e3eb040] Original list of addresses:
[tcp @ 0x55c15e3eb040] Address 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Interleaved list of addresses:
[tcp @ 0x55c15e3eb040] Address 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Starting connection attempt to 192.168.1.85 port 8554
[tcp @ 0x55c15e3eb040] Successfully connected to 192.168.1.85 port 8554
[rtsp @ 0x55c15e3e8300] SDP:
v=0
o=- 0 0 IN IP4 127.0.0.1
s=Stream
c=IN IP4 0.0.0.0
t=0 0
m=video 0 RTP/AVP 96
a=control:rtsp://192.168.1.85:8554/camera/trackID=0
a=rtpmap:96 MP4V-ES/90000
a=fmtp:96 config=000001B001000001B58913000001000000012000C48D88002D3C04871443000001B24C61766335392E33372E313030; profile-level-id=1

[rtsp @ 0x55c15e3e8300] video codec set to: mpeg4
[rtp @ 0x55c15e3ef600] No default whitelist set
[udp @ 0x55c15e3f0200] No default whitelist set
[udp @ 0x55c15e3f0200] end receive buffer size reported is 425984
[udp @ 0x55c15e3eff40] No default whitelist set
[udp @ 0x55c15e3eff40] end receive buffer size reported is 425984
[rtsp @ 0x55c15e3e8300] setting jitter buffer size to 500
[rtsp @ 0x55c15e3e8300] hello state=0
[rtsp @ 0x55c15e3e8300] Could not find codec parameters for stream 0 (Video: mpeg4, 1 reference frame, none(left), 1920x1080 [SAR 1:1 DAR 16:9], 1/5): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, rtsp, from 'rtsp://192.168.1.85:8554/camera':
  Metadata:
    title           : Stream
  Duration: N/A, bitrate: N/A
  Stream #0:0, 0, 1/90000: Video: mpeg4, 1 reference frame, none(left), 1920x1080 [SAR 1:1 DAR 16:9], 0/1, 5 tbr, 90k tbn
Successfully opened the file.
Parsing a group of options: output url output/out%03d.mp4.
Applying option f (force format) with argument v4l2.
Applying option c (codec name) with argument copy.
Applying option map (set input stream mapping) with argument 0.
Applying option f (force format) with argument segment.
Successfully parsed a group of options.
Opening an output file: output/out%03d.mp4.
Successfully opened the file.
[segment @ 0x55c15e415a80] Selected stream id:0 type:video
[segment @ 0x55c15e415a80] Opening 'output/out000.mp4' for writing
[file @ 0x55c15e42d840] Setting default whitelist 'file,crypto,data'
Output #0, segment, to 'output/out%03d.mp4':
  Metadata:
    title           : Stream
    encoder         : Lavf59.27.100
  Stream #0:0, 0, 1/10240: Video: mpeg4, 1 reference frame, none(left), 1920x1080 (0x0) [SAR 1:1 DAR 16:9], 0/1, q=2-31, 5 tbr, 10240 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
No more output streams to write to, finishing.:00.00 bitrate=N/A speed=   0x
[segment @ 0x55c15e415a80] segment:'output/out000.mp4' count:0 ended
[AVIOContext @ 0x55c15e42d8c0] Statistics: 292 bytes written, 2 seeks, 3 writeouts
frame=    0 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (rtsp://192.168.1.85:8554/camera):
  Input stream #0:0 (video): 0 packets read (0 bytes);
  Total: 0 packets (0 bytes) demuxed
Output file #0 (output/out%03d.mp4):
  Output stream #0:0 (video): 0 packets muxed (0 bytes);
  Total: 0 packets (0 bytes) muxed
0 frames successfully decoded, 0 decoding errors


  


  Additional info :

  


  

  • The stream is up and running. ffplay rtsp://192.168.1.85:8554/camera opens normally

  


  • The exact command (from ENTRYPOINT) on the host, works perfectly fine (it generates files for every 30 seconds).

  


  • From inside the container, I can ping 192.168.1.85 (it is actually localhost)

  


  • Setting -analyzeduration 1000 does not fix the issue

  


  


  Why is the container stopping for no reason ?