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• Create a video with timestamp from multiple images with "picture taken date/time" in the meta data with ffmpeg or similar ?

  16 mars 2018, par m4D_guY

  I have two time lapse videos with a rate of 1 fps. The camera took 1 Image every minute. Unfortunately it was missed to set the camera to burn/print on every image the time and date. I am trying to burn the time and date afterwards into the video.

  I decoded with ffmpeg the two .avi files into  7000 single images each and wrote a R script that renamed the files into their "creation" date (the time and date the pictures where taken). Then i used exiftoolto write those information "into" the file, into their exif data or meta data or whatever this is called.

  The final images in the folder are looking like this :

  2018-03-12 17_36_40.png

  2018-03-12 17_35_40.png

  2018-03-12 17_34_40.png

  ...

  Is it possible to create a Video from these images again with ffmpeg or similiar with a "timestamp" in the video so you can see while watching a time and date stamp in the video ?

• ffmpeg : Streaming with RTSP and recording at the same time

  1er décembre 2017, par Barzou

  My goal is to stream a part of my desktop to a remote machine, and to record the sent stream at the same time.
  The streaming technology chosen is the RTSP protocol with FFserver as rtsp server.

  I already succeed the streaming part with ffmpeg, but now I’m trying to record the stream at the same time. To do so, I’m trying to use the tee pseudo-muxer as referenced here :
  http://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs

  https://ffmpeg.org/ffmpeg-formats.html#tee

  Unfortunately, I’m having an error message when launching my command which is the following :

  ffmpeg -loglevel debug  -f alsa -ac 2 -thread_queue_size 512 -ar 44100 -i hw:0 \
  
  -f x11grab -framerate 30 -show_region 1 -video_size 800x480 -thread_queue_size 512 -i :0.0 \
  
  -f tee -c:v libx264 -c:a mp3 -pix_fmt yuv422p  -flags +global_header -map 1:v -map 0:a \
  
  "test.mp4|[f=ffm]http://localhost:8000/feed.ffm/"

  And here is the output :

    ffmpeg version 3.4-1~xenial1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.5) 20160609
  
    configuration: --prefix=/usr --extra-version='1~xenial1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-nonfree --enable-libfdk-aac --enable-nvenc --enable-libdc1394 --enable-libiec61883 --enable-libopencv --enable-frei0r --enable-libx264 --enable-shared
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Guessed Channel Layout for Input Stream #0.0 : stereo
  
  Input #0, alsa, from 'hw:0':
  
    Duration: N/A, start: 1512038836.756092, bitrate: 1411 kb/s
  
      Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
  
  Input #1, x11grab, from ':0.0':
  
    Duration: N/A, start: 1512038836.789836, bitrate: N/A
  
      Stream #1:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 800x480, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
  
  Stream mapping:
  
    Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
    Stream #0:0 -> #0:1 (pcm_s16le (native) -> mp3 (libmp3lame))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x5621206c0180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x5621206c0180] profile High 4:2:2, level 3.1, 4:2:2 8-bit
  
  [libx264 @ 0x5621206c0180] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  [tee @ 0x5621206bef60] Slave '[f=ffm]http://localhost:8000/feed.ffm/': error writing header: Broken pipe
  
  [tee @ 0x5621206bef60] Slave muxer #1 failed, aborting.
  
  Could not write header for output file #0 (incorrect codec parameters ?): 
  
  
  
  Broken pipe
  
  Error initializing output stream 0:1 -- 
  
  Conversion failed!

  I also tried with f=rtsp, with no chance and this error message :

  [tee @ 0x559b26ea2f40] Slave '[f=rtsp]http://localhost:8000/feed.ffm/': error writing header: Invalid data found when processing input
  
  [tee @ 0x559b26ea2f40] Slave muxer #1 failed, aborting.
  
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid data found when processing input
  
  Error initializing output stream 0:1 -- 

  FFserver configuration :

  <feed>
  
     File /tmp/feed.ffm
  
     FileMaxSize 20M
  
  </feed>
  
  
  
  <stream>
  
     Feed feed.ffm
  
     Format rtp
  
     VideoSize 800x480
  
     VideoQMin 1
  
     VideoQMax 25
  
     VideoFrameRate 30
  
     VideoBitRate 8000
  
     VideoCodec libx264
  
     PixelFormat yuv422p
  
  
  
  
  
     #h264 options
  
     AVOptionVideo flags +global_header
  
     AVOptionVideo preset ultrafast
  
     AVOptionVideo crf 25
  
     AVOptionVideo profile high422
  
     AVOptionVideo tune zerolatency
  
  
  
     NoAudio
  
  </stream>

  "Slave ’[f=ffm]http://localhost:8000/feed.ffm/’ : error writing header : Broken pipe" is the key, but I can’t figure what is wrong in my command. Without tee, it works flawlessly.

  I did many searches and cannot find the problem yet, so I’m asking here.

  Thanks,
  Barzou.

• Unable to get current time in TCL. can i use flush here ?

  30 novembre 2017, par M. D. P

  unable to get current time for the bellow code :

  proc a {} { 
  
  
  
          for {set i 0} {$i < 3} {incr i} {
  
      puts " $i "
  
  
  
  
  
                  set imagetime [clock format [clock seconds] -format %Y%m%d_%H%M%S]
  
                  set videotime [clock format [clock seconds] -format %Y%m%d_%H%M%S]
  
       
  
                  exec ffmpeg -f dshow -i "video=Integrated Webcam" -s 1280x720 -benchmark c:/test/Image_$imagetime.jpg >& c:/test/image_$imagetime.txt &
  
  
  
                  after 15000
  
  
  
                  exec ffmpeg -f dshow -t 00:00:10 -i "video=Integrated Webcam" -s 1280x720 -benchmark c:/test/video_$videotime.avi >& c:/test/video_$videotime.txt &
  
                  
  
                  after 15000
  
          } 
  
  }
  
  a

  the output is :

  

  the problem here is, even though the variable for taking video time and image time is different, it is tacking same time for video and image.

  any reason or solution for this ????

  can i use flush command ???

  can i work with following code :

  proc a {} { 
  
  
  
          for {set i 0} {$i < 3} {incr i} {
  
      puts " $i "
  
  
  
  set time [clock format [clock seconds] -format %Y%m%d_%H%M%S]
  
                       
  
                  exec ffmpeg -f dshow -i "video=Integrated Webcam" -s 1280x720 -benchmark c:/test/Image_$time.jpg >& c:/test/image_$time.txt &
  
  
  
                  after 15000
  
  
  
                  exec ffmpeg -f dshow -t 00:00:10 -i "video=Integrated Webcam" -s 1280x720 -benchmark c:/test/video_$time.avi >& c:/test/video_$time.txt &
  
                  
  
                  after 15000
  
          } 
  
  }
  
  a

  any answer ??