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• 3 hidden Piwik features you likely don’t know, that will make you more productive

  17 janvier 2017, par InnoCraft — Community

  At Piwik and at InnoCraft, we always aim to make features as intuitive as possible. Having thousands of features in Piwik and having to find a balance between beginners and advanced users can sometimes be a challenge. Sometimes this even leads to building hidden features that are mainly targeted for power users. The list below shows three of them, did you know any of them yet ?

  BTW : If you don’t have Piwik yet, you can try them on our Piwik Demo.

  1. Search

  When you press the letter “f”, it will activate the search bar in the top left. Once you start typing something, it will show matching reports. Say you want to view reports about “devices” but don’t remember exactly which category it is in, simply start typing “devices” and the matching entry will show up without even having to move the mouse.

  The search bar also searches for matching websites and segments. Use the arrow up and down keys to select the entry you want and press enter to confirm the selection.

  Say you don’t remember the name of a report but you know it is listed under the category “Visitor”, then start typing the name of the category and it will show all related reports.

  2. Zen Mode

  When you press the letter “z”, it will activate the Zen Mode which lets you focus on the reports and content by removing the header and left menu. To disable the Zen Mode, simply press “z” again.

  This is especially useful in combination with the search bar mentioned above, as it enables you to quickly switch between reports, websites and segments even while menu and header are hidden.

  3. Faster period change

  Changing the displayed period is a task you likely perform quite often when analyzing reports. Usually, you would first select the period and then press the button “Apply” in the date selector. Instead, you can simply double click the name of the period and it will immediately load the selected period without having to click on the “Apply” button.

  What are your hidden features in Piwik ?

  Let us know by getting in touch with us or share it with us on Facebook or Twitter.

• tcp : set socket buffer sizes before listen/connect/accept

  9 janvier 2017, par Joel Cunningham

  tcp : set socket buffer sizes before listen/connect/accept
  From e24d95c0e06a878d401ee34fd6742fcaddeeb95f Mon Sep 17 00:00:00 2001
  
  From : Joel Cunningham <joel.cunningham@me.com>
  
  Date : Mon, 9 Jan 2017 13:37:51 -0600
  
  Subject : [PATCH] tcp : set socket buffer sizes before listen/connect/accept
  Attempting to set SO_RCVBUF and SO_SNDBUF on TCP sockets after connection
  
  establishment is incorrect and some stacks ignore the set call on the socket at
  
  this point.  This has been observed on MacOS/iOS.  Windows 7 has some peculiar
  
  behavior where setting SO_RCVBUF after applies only if the buffer is increasing
  
  from the default while decreases are ignored.  This is possibly how the incorrect
  
  usage has gone unnoticed
  Unix Network Programming Vol. 1 : The Sockets Networking API (3rd edition, seciton 7.5) :
  "When setting the size of the TCP socket receive buffer, the ordering of the
  
  function calls is important.  This is because of TCP’s window scale option,
  
  which is exchanged with the peer on SYN segments when the connection is
  
  established. For a client, this means the SO_RCVBUF socket option must be
  
  set before calling connect.  For a server, this means the socket option must
  
  be set for the listening socket before calling listen.  Setting this option
  
  for the connected socket will have no effect whatsoever on the possible window
  
  scale option because accept does not return with the connected socket until
  
  TCP’s three-way handshake is complete.  This is why the option must be set on
  
  the listening socket. (The sizes of the socket buffers are always inherited from
  
  the listening socket by the newly created connected socket)"
  Signed-off-by : Joel Cunningham <joel.cunningham@me.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/tcp.c

• FFmpeg image to video conversion error : [image2] Opening file for reading

  14 février 2018, par user1690179

  I am running ffmpeg on an AWS Lambda instance. The Lambda function takes an input image and transcodes it into a video segment using ffmpeg :

  ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/output.mp4

  I am seeing inconsistent behavior where sometimes the output video is shorter than the specified duration. This happens inconsistently to random images. The same exact image sometimes renders correctly, and sometimes is cut short.

  This behavior only happens on Lambda. I am not able to replicate this on my local computer, or on a dedicated EC2 instance with the same environment that runs on lambda.

  I noticed that when the output video is short, the ffmpeg log is different. The main difference are repeated [image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading lines. See ffmpeg logs below.

  Normal execution with the correct output video length :

      ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/video-TMB6RNO0EE.mp4
  
  ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      56.  7.100 / 56.  7.100
  
    libavcodec     58.  9.100 / 58.  9.100
  
    libavformat    58.  3.100 / 58.  3.100
  
    libavdevice    58.  0.100 / 58.  0.100
  
    libavfilter     7. 11.101 /  7. 11.101
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  Input #0, image2, from '/tmp/photo-SNRUR7ZS13.jpg':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: 18703 kb/s
  
      Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 687x860 [SAR 200:200 DAR 687:860], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0x5837900] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0x51c2340] using SAR=1477/3287
  
  [libx264 @ 0x51c2340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x51c2340] profile High, level 3.1
  
  [libx264 @ 0x51c2340] 264 - core 155 r61 b00bcaf - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=3 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
  
  Output #0, mp4, to '/tmp/video-TMB6RNO0EE.mp4':
  
    Metadata:
  
      encoder         : Lavf58.3.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 6183:13760 DAR 687:860], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc58.9.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  frame=   49 fps=0.0 q=28.0 size=       0kB time=-00:00:00.03 bitrate=N/A speed=N/A    
  
  frame=   69 fps= 66 q=28.0 size=       0kB time=00:00:00.76 bitrate=   0.5kbits/s speed=0.728x    
  
  frame=   89 fps= 57 q=28.0 size=       0kB time=00:00:01.56 bitrate=   0.2kbits/s speed=0.998x    
  
  frame=  109 fps= 53 q=28.0 size=       0kB time=00:00:02.36 bitrate=   0.2kbits/s speed=1.14x    
  
  frame=  129 fps= 50 q=28.0 size=       0kB time=00:00:03.16 bitrate=   0.1kbits/s speed=1.22x    
  
  frame=  148 fps= 48 q=28.0 size=       0kB time=00:00:03.92 bitrate=   0.1kbits/s speed=1.27x    
  
  frame=  168 fps= 47 q=28.0 size=       0kB time=00:00:04.72 bitrate=   0.1kbits/s speed=1.31x    
  
  No more output streams to write to, finishing.
  
  frame=  175 fps= 39 q=-1.0 Lsize=      94kB time=00:00:06.88 bitrate= 112.2kbits/s speed=1.54x    
  
  video:91kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.161261%
  
  Input file #0 (/tmp/photo-SNRUR7ZS13.jpg):
  
    Input stream #0:0 (video): 176 packets read (16459168 bytes); 176 frames decoded; 
  
    Total: 176 packets (16459168 bytes) demuxed
  
  Output file #0 (/tmp/video-TMB6RNO0EE.mp4):
  
    Output stream #0:0 (video): 175 frames encoded; 175 packets muxed (93507 bytes); 
  
    Total: 175 packets (93507 bytes) muxed
  
  [libx264 @ 0x51c2340] frame I:1     Avg QP:14.33  size: 73084
  
  [libx264 @ 0x51c2340] frame P:44    Avg QP:14.09  size:   302
  
  [libx264 @ 0x51c2340] frame B:130   Avg QP:23.31  size:    50
  
  [libx264 @ 0x51c2340] consecutive B-frames:  0.6%  1.1%  0.0% 98.3%
  
  [libx264 @ 0x51c2340] mb I  I16..4:  3.3% 84.5% 12.1%
  
  [libx264 @ 0x51c2340] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  3.2%  0.1%  0.0%  0.0%  0.0%    skip:96.7%
  
  [libx264 @ 0x51c2340] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.4%  0.0%  0.0%  direct: 0.0%  skip:99.6%  L0:31.2% L1:68.8% BI: 0.0%
  
  [libx264 @ 0x51c2340] 8x8 transform intra:84.5% inter:98.8%
  
  [libx264 @ 0x51c2340] coded y,uvDC,uvAC intra: 95.1% 63.9% 51.6% inter: 0.1% 0.6% 0.0%
  
  [libx264 @ 0x51c2340] i16 v,h,dc,p: 26% 21%  4% 49%
  
  [libx264 @ 0x51c2340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 27% 21%  3%  5%  6%  6%  4%  9%
  
  [libx264 @ 0x51c2340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 36% 10%  4%  7%  5%  6%  2%  6%
  
  [libx264 @ 0x51c2340] i8c dc,h,v,p: 51% 29% 16%  4%
  
  [libx264 @ 0x51c2340] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x51c2340] ref P L0: 96.5%  0.0%  3.3%  0.2%
  
  [libx264 @ 0x51c2340] ref B L0: 42.4% 57.6%
  
  [libx264 @ 0x51c2340] ref B L1: 97.0%  3.0%
  
  [libx264 @ 0x51c2340] kb/s:106.08

  Log from a short video :

  ffmpeg -framerate 25 -y -loop 1 -i /tmp/photo-2HD2Z3UN3W.jpg -t 15.00 -filter_complex "[0:v]crop=h=ih:w='if(gt(a,16/9),ih*16/9,iw)':y=0:x='if(gt(a,16/9),(ow-iw)/2,0)'[tmp];[tmp]scale=-1:4000,crop=w=iw:h='min(iw*9/16,ih)':x=0:y='0.17*ih-((t/15.00)*min(0.17*ih,(ih-oh)/6))',trim=duration=15.00[tmp1];[tmp1]zoompan=z='if(lte(pzoom,1.0),1.15,max(1.0,pzoom-0.0005))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':d=1,setsar=sar=1:1[animated];[animated]fade=out:st=12.00:d=3.00:c=#000000[animated]" -map "[animated]" -pix_fmt yuv420p -s 1280x720 -y /tmp/video-QB1JCDT021.mp4
  
  ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
  
  built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
  
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
  libavutil 56. 7.100 / 56. 7.100
  
  libavcodec 58. 9.100 / 58. 9.100
  
  libavformat 58. 3.100 / 58. 3.100
  
  libavdevice 58. 0.100 / 58. 0.100
  
  libavfilter 7. 11.101 / 7. 11.101
  
  libswscale 5. 0.101 / 5. 0.101
  
  libswresample 3. 0.101 / 3. 0.101
  
  libpostproc 55. 0.100 / 55. 0.100
  
  Input #0, image2, from '/tmp/photo-2HD2Z3UN3W.jpg':
  
  Duration: 00:00:00.04, start: 0.000000, bitrate: 373617 kb/s
  
  Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1936x2592 [SAR 72:72 DAR 121:162], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 (mjpeg) -> crop
  
  fade -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0x4d63b40] deprecated pixel format used, make sure you did set range correctly
  
  [swscaler @ 0x4df7340] deprecated pixel format used, make sure you did set range correctly
  
  [swscaler @ 0x50e97c0] deprecated pixel format used, make sure you did set range correctly
  
  [swscaler @ 0x50e97c0] Warning: data is not aligned! This can lead to a speed loss
  
  [libx264 @ 0x4b17480] using SAR=1/1
  
  [libx264 @ 0x4b17480] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 0x4b17480] profile High, level 3.1
  
  [libx264 @ 0x4b17480] 264 - core 155 r61 b00bcaf - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=3 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
  
  Output #0, mp4, to '/tmp/video-QB1JCDT021.mp4':
  
  Metadata:
  
  encoder : Lavf58.3.100
  
  Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
  Metadata:
  
  encoder : Lavc58.9.100 libx264
  
  Side data:
  
  cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  [swscaler @ 0x5bd0380] deprecated pixel format used, make sure you did set range correctly
  
  debug=1
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
  
  [AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
  
  [mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
  
  [mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
  
  [mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
  
  [mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
  
  [mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
  
  [mjpeg @ 0x4b14940] index=0
  
  [mjpeg @ 0x4b14940] qscale[0]: 0
  
  [mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
  
  [mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
  
  [mjpeg @ 0x4b14940] index=1
  
  [mjpeg @ 0x4b14940] qscale[1]: 1
  
  [mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
  
  [mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
  
  [mjpeg @ 0x4b14940] sof0: picture: 1936x2592
  
  [mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
  
  [mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
  
  [mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
  
  [mjpeg @ 0x4b14940] pix fmt id 11111100
  
  [mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
  
  [mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
  
  [mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
  
  [mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
  
  [mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
  
  [mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
  
  [mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
  
  [mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
  
  [mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
  
  [mjpeg @ 0x4b14940] escaping removed 7149 bytes
  
  [mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
  
  [mjpeg @ 0x4b14940] component: 0
  
  [mjpeg @ 0x4b14940] component: 1
  
  [mjpeg @ 0x4b14940] component: 2
  
  [mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
  
  [mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
  
  [mjpeg @ 0x4b14940] decode frame unused 0 bytes
  
  [swscaler @ 0x5bd42c0] deprecated pixel format used, make sure you did set range correctly
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
  
  [AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
  
  [mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
  
  [mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
  
  [mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
  
  [mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
  
  [mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
  
  [mjpeg @ 0x4b14940] index=0
  
  [mjpeg @ 0x4b14940] qscale[0]: 0
  
  [mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
  
  [mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
  
  [mjpeg @ 0x4b14940] index=1
  
  [mjpeg @ 0x4b14940] qscale[1]: 1
  
  [mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
  
  [mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
  
  [mjpeg @ 0x4b14940] sof0: picture: 1936x2592
  
  [mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
  
  [mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
  
  [mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
  
  [mjpeg @ 0x4b14940] pix fmt id 11111100
  
  [mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
  
  [mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
  
  [mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
  
  [mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
  
  [mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
  
  [mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
  
  [mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
  
  [mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
  
  [mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
  
  [mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
  
  [mjpeg @ 0x4b14940] escaping removed 7149 bytes
  
  [mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
  
  [mjpeg @ 0x4b14940] component: 0
  
  [mjpeg @ 0x4b14940] component: 1
  
  [mjpeg @ 0x4b14940] component: 2
  
  [mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
  
  [mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
  
  [mjpeg @ 0x4b14940] decode frame unused 0 bytes
  
  [swscaler @ 0x5bd8200] deprecated pixel format used, make sure you did set range correctly
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  ...
  
  ...
  
  ...

  As requested, here is a link to the full log. In this log - ffmpeg renders only 323 out of 375 frames.

  The Opening '/tmp/photo-2HD2Z3UN3W.jpg' segment repeats many many times until it finally renders out a short video. Does anyone have insight into why it keeps opening the image file ? This must have something to do with the underlying issue.