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Autres articles (30)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

  • MediaSPIP Player : les contrôles

    26 mai 2010, par

    Les contrôles à la souris du lecteur
    En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...)

Sur d’autres sites (5806)

  • Revision 37408 : déplacement de chaines de langue Faire refonctionner l’encodage sonore

    18 avril 2010, par kent1@… — Log

    déplacement de chaines de langue
    Faire refonctionner l’encodage sonore

  • FFmpeg using png with tranparency and exclusion blending mode

    27 août 2016, par moorej

    I’m trying to use the exclusion blending mode to blend together a video and a png with transparency. I’ve looked around quite a bit but I can’t find a solution that works for me. Here’s the ffmpeg command :

    ffmpeg -i movie.mkv -i text_white_bg_trans.png -filter_complex\
     "[1:v]setsar=sar=1,format=rgba[txt]; [0:v]format=rgba[mo]; [mo][txt]blend=all_mode='exclusion'"  out_exclusion.mkv

    Edit : and the console output :

    ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
     built with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
     configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --enable-videotoolbox --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
     libavutil      55. 17.103 / 55. 17.103
     libavcodec     57. 24.102 / 57. 24.102
     libavformat    57. 25.100 / 57. 25.100
     libavdevice    57.  0.101 / 57.  0.101
     libavfilter     6. 31.100 /  6. 31.100
     libavresample   3.  0.  0 /  3.  0.  0
     libswscale      4.  0.100 /  4.  0.100
     libswresample   2.  0.101 /  2.  0.101
     libpostproc    54.  0.100 / 54.  0.100
    Input #0, matroska,webm, from 'movie.mkv':
     Metadata:
       ENCODER         : Lavf57.25.100
     Duration: 00:00:11.88, start: 0.000000, bitrate: 5143 kb/s
       Stream #0:0: Video: h264 (High), yuv420p, 1640x1232, SAR 1:1 DAR 205:154, 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
       Metadata:
         ENCODER         : Lavc57.24.102 libx264
         DURATION        : 00:00:11.880000000
    Input #1, png_pipe, from 'text_white_bg_trans.png':
     Duration: N/A, bitrate: N/A
       Stream #1:0: Video: png, rgba(pc), 1640x1232, 25 tbr, 25 tbn, 25 tbc
    File 'out_exclusion.mkv' already exists. Overwrite ? [y/N] y
    No pixel format specified, yuv444p for H.264 encoding chosen.
    Use -pix_fmt yuv420p for compatibility with outdated media players.
    [libx264 @ 0x7fb10a01e200] using SAR=1/1
    [libx264 @ 0x7fb10a01e200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x7fb10a01e200] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
    [libx264 @ 0x7fb10a01e200] 264 - core 148 - 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=4 threads=12 lookahead_threads=2 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, matroska, to 'out_exclusion.mkv':
     Metadata:
       encoder         : Lavf57.25.100
       Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1640x1232 [SAR 1:1 DAR 205:154], q=-1--1, 25 fps, 1k tbn, 25 tbc (default)
       Metadata:
         encoder         : Lavc57.24.102 libx264
       Side data:
         unknown side data type 10 (24 bytes)
    Stream mapping:
     Stream #0:0 (h264) -> format
     Stream #1:0 (png) -> setsar
     blend -> Stream #0:0 (libx264)
    Press [q] to stop, [?] for help
    frame=   24 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   47 fps= 40 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   61 fps= 36 q=28.0 size=      96kB time=00:00:00.12 bitrate=6567.3kbitsframe=   70 fps= 32 q=28.0 size=     264kB time=00:00:00.48 bitrate=4513.9kbitsframe=   83 fps= 30 q=28.0 size=     498kB time=00:00:01.00 bitrate=4079.5kbitsframe=   95 fps= 29 q=28.0 size=     691kB time=00:00:01.48 bitrate=3827.5kbitsframe=  106 fps= 28 q=28.0 size=     896kB time=00:00:01.92 bitrate=3823.7kbitsframe=  118 fps= 27 q=28.0 size=    1132kB time=00:00:02.40 bitrate=3863.7kbitsframe=  130 fps= 26 q=28.0 size=    1338kB time=00:00:02.88 bitrate=3806.1kbitsframe=  142 fps= 26 q=28.0 size=    1588kB time=00:00:03.36 bitrate=3871.7kbitsframe=  154 fps= 25 q=28.0 size=    1808kB time=00:00:03.84 bitrate=3856.9kbitsframe=  166 fps= 25 q=28.0 size=    2062kB time=00:00:04.32 bitrate=3910.9kbitsframe=  178 fps= 24 q=28.0 size=    2328kB time=00:00:04.80 bitrate=3972.8kbitsframe=  190 fps= 24 q=28.0 size=    2620kB time=00:00:05.28 bitrate=4064.7kbitsframe=  203 fps= 24 q=28.0 size=    2886kB time=00:00:05.80 bitrate=4076.0kbitsframe=  215 fps= 24 q=28.0 size=    3132kB time=00:00:06.28 bitrate=4085.9kbitsframe=  226 fps= 24 q=28.0 size=    3357kB time=00:00:06.72 bitrate=4092.5kbitsframe=  238 fps= 24 q=28.0 size=    3589kB time=00:00:07.20 bitrate=4083.9kbitsframe=  250 fps= 23 q=28.0 size=    3794kB time=00:00:07.68 bitrate=4047.3kbitsframe=  260 fps= 23 q=28.0 size=    3978kB time=00:00:08.08 bitrate=4032.7kbitsframe=  272 fps= 23 q=28.0 size=    4212kB time=00:00:08.56 bitrate=4031.0kbitsframe=  284 fps= 23 q=28.0 size=    4453kB time=00:00:09.04 bitrate=4035.3kbitsframe=  295 fps= 23 q=28.0 size=    4632kB time=00:00:09.48 bitrate=4002.9kbitsframe=  297 fps= 20 q=-1.0 Lsize=    5559kB time=00:00:11.80 bitrate=3859.4kbits/s speed=0.808x    
    video:5556kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.053747%
    [libx264 @ 0x7fb10a01e200] frame I:2     Avg QP:21.70  size: 56001
    [libx264 @ 0x7fb10a01e200] frame P:178   Avg QP:23.12  size: 24833
    [libx264 @ 0x7fb10a01e200] frame B:117   Avg QP:25.78  size:  9886
    [libx264 @ 0x7fb10a01e200] consecutive B-frames: 29.3% 49.8% 14.1%  6.7%
    [libx264 @ 0x7fb10a01e200] mb I  I16..4:  9.5% 75.0% 15.5%
    [libx264 @ 0x7fb10a01e200] mb P  I16..4:  4.0% 14.8%  1.0%  P16..4: 43.3% 12.0%  4.5%  0.0%  0.0%    skip:20.4%
    [libx264 @ 0x7fb10a01e200] mb B  I16..4:  0.6%  1.9%  0.1%  B16..8: 48.5%  4.2%  0.3%  direct: 0.6%  skip:43.8%  L0:42.5% L1:55.6% BI: 1.9%
    [libx264 @ 0x7fb10a01e200] 8x8 transform intra:74.8% inter:85.5%
    [libx264 @ 0x7fb10a01e200] coded y,u,v intra: 31.3% 0.0% 0.0% inter: 15.0% 0.0% 0.0%
    [libx264 @ 0x7fb10a01e200] i16 v,h,dc,p: 30% 32% 13% 25%
    [libx264 @ 0x7fb10a01e200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 22% 32%  3%  4%  3%  6%  3%  3%
    [libx264 @ 0x7fb10a01e200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 33% 16%  3%  4%  3%  9%  4%  2%
    [libx264 @ 0x7fb10a01e200] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x7fb10a01e200] ref P L0: 72.2% 17.9%  7.5%  2.5%
    [libx264 @ 0x7fb10a01e200] ref B L0: 90.9%  8.6%  0.5%
    [libx264 @ 0x7fb10a01e200] ref B L1: 98.6%  1.4%
    [libx264 @ 0x7fb10a01e200] kb/s:3830.94

    Edit : Here’s a frame from the output.

    The output video is B&W rather than the original color (not sure why). The rectangle in the image is located where there is a block of text on a png with a transparent background. The png is the same size as the video.

    I’m expecting something more like this :
    enter image description here

    @Mulvya suggestion fixed the issue with color but I’m still seeing some problems with transparency being handled. I’m attaching a few different images below that each create different problems. All created in Photoshop CC (therein may lie the problem).

    A transparent background with a separate text layer that is then exported by Save->png, Photoshop appears to merge these two layers but differently than when "merge layers" is chosen before export. The exported image looks like the B&W image I posted above but with color.

    The in the second I merge the layers before exporting. It appears the entire image is treated as white.

    In the third I draw "hello" on a transparent layer with a "soft" brush using different grays then export. Transparent areas are rendered as white, gray or translucent areas opaque or with a strange dithering "effect."

    It seems I’m moving outside the realm of StackOverflow, but I’m not sure where this post would be better suited.
    1
    1
    2
    2
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    3

  • ffmpeg concatenation after using drawtext filter

    12 août 2016, par Sven Hoskens

    I’m fairly new to ffmpeg, but after a few days of searching on this issue, I’ve completely hit a brick wall. Any help would be appreciated.

    My use case : Our client wants to upload videos for multiple regions. Each video will be the same format, 1920x1080, mp4. For each region, they want to add a different image at the end of the video, for a few seconds. This image contains their logo, some additional info, and a variable code. They will enter this code alongside the uploaded video. The image stays the same, so is already present on the server.
    So basically, I have an input video, a video of an image, and a small code. I need to add this code to the video of the image (in a predefined position), and then I need to add the resulting video to the end of the input video. Once that is complete, I just need to output the video in 1920x1080 and in 1024x576.

    I have tried several things, but the concatenation step always fails with the manipulated video’s.

    Attempt 1

    In my first attempt, I used ffmpeg to create a video from an image, and add the text in the designated area.

    ffmpeg -y -f lavfi -i image.png -r 30 -t 10 -pix_fmt yuv420p -map 0:v -vf drawtext="fontfile=HelveticaNeue.dfont: text='GLNS/TEST/1234b': fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=7: x=179: y=805" imageVideo.mp4

    This command creates a .mp4 video of the correct size, with a duration of 10 seconds, and adds the text ’GLNS/TEST/1234b’ in the correct location.

    Next, I use the following command to concatenate the two videos. Both have the same resolution and codec.

    ffmpeg -f concat -safe 0 -i config.txt -vf scale=1920:1080 outputHD.mp4 -vf scale=1024:576 outputSD.mp4

    config.txt contains following :

    file my_input_file.mp4
    file ImageVideo.mp4

    This concatenation works with regular videos. However, when I use it with ImageVideo.mp4 (the one created by the first command) I get this error log :

    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f86dc924600] Auto-inserting h264_mp4toannexb bitstream filtereed=0.509x    
    [aac @ 0x7f86dc019e00] Number of bands (31) exceeds limit (5).
    Error while decoding stream #0:1: Invalid data found when processing input
    [aac @ 0x7f86dc019e00] Number of bands (27) exceeds limit (8).
    Error while decoding stream #0:1: Invalid data found when processing input
    [h264 @ 0x7f86dd857200] Error splitting the input into NAL units.
    [h264 @ 0x7f86dd829400] Invalid NAL unit size.
    [h264 @ 0x7f86dd829400] Error splitting the input into NAL units.
    [aac @ 0x7f86dc019e00] Number of bands (10) exceeds limit (1).
    Error while decoding stream #0:1: Invalid data found when processing input
    [h264 @ 0x7f86dd816800] Invalid NAL unit size.
    [h264 @ 0x7f86dd816800] Error splitting the input into NAL units.
    [aac @ 0x7f86dc019e00] Number of bands (24) exceeds limit (1).
    Error while decoding stream #0:1: Invalid data found when processing input

    #this goes on for a few hundred lines

    The resulting output is identical to the input video, but does not contain the desired image video at the end.

    Attempt 2

    Since the above attempt didn’t work, I tried concatenating a video I let our designer make of the image with Adobe After Effects. This video was also saved as a .mp4 with the H264 codec. If I concatenate the input video and this one, I get a correct result. However, as soon as I add the code in the designated area with this command :

    ffmpeg -i new_image_video.mp4 -vf drawtext="fontfile=HelveticaNeue.dfont: text='GLNS/TEST/1234b': fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=7: x=179: y=805" -c:v libx264 imageVideo.mp4

    I get this error :

    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7ff94c800000] Auto-inserting h264_mp4toannexb bitstream filter97x    
    [h264 @ 0x7ff94b053800] top block unavailable for requested intra mode -1
    [h264 @ 0x7ff94b053800] error while decoding MB 0 0, bytestream 49526
    [h264 @ 0x7ff94b053e00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one
    [h264 @ 0x7ff94b053e00] chroma_log2_weight_denom 28 is out of range
    [h264 @ 0x7ff94b053e00] illegal long ref in memory management control operation 2
    [h264 @ 0x7ff94b053e00] cabac_init_idc 32 overflow
    [h264 @ 0x7ff94b053e00] decode_slice_header error
    [h264 @ 0x7ff94b053e00] no frame!
    [h264 @ 0x7ff94b053800] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
    [h264 @ 0x7ff94b072a00] reference overflow 22 > 15 or 0 > 15
    [h264 @ 0x7ff94b072a00] decode_slice_header error
    [h264 @ 0x7ff94b072a00] no frame!
    [h264 @ 0x7ff94b01a400] illegal modification_of_pic_nums_idc 20
    [h264 @ 0x7ff94b01a400] decode_slice_header error
    [h264 @ 0x7ff94b01a400] no frame!
    [h264 @ 0x7ff94b01aa00] illegal modification_of_pic_nums_idc 20
    [h264 @ 0x7ff94b01aa00] decode_slice_header error
    [h264 @ 0x7ff94b01aa00] no frame!
    Error while decoding stream #0:0: Invalid data found when processing input
    [h264 @ 0x7ff94b053800] deblocking_filter_idc 8 out of range
    [h264 @ 0x7ff94b053800] decode_slice_header error
    [h264 @ 0x7ff94b053800] no frame!
    Error while decoding stream #0:0: Invalid data found when processing input
    [h264 @ 0x7ff94b053e00] illegal memory management control operation 8
    [h264 @ 0x7ff94b053e00] co located POCs unavailable
    [h264 @ 0x7ff94b053e00] error while decoding MB 2 0, bytestream -35
    [h264 @ 0x7ff94b053e00] concealing 8160 DC, 8160 AC, 8160 MV errors in B frame
    [h264 @ 0x7ff94b072a00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one

    # this goes on for a while...

    [h264 @ 0x7ff94b01a400] concealing 4962 DC, 4962 AC, 4962 MV errors in B frame
    Error while decoding stream #0:0: Invalid data found when processing input
    frame= 2553 fps= 17 q=-1.0 Lsize=   26995kB time=00:01:42.16 bitrate=2164.6kbits/s dup=0 drop=60 speed=0.697x    
    video:25258kB audio:1661kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.285236%
    [libx264 @ 0x7ff94b810400] frame I:35    Avg QP:17.45  size: 55070
    [libx264 @ 0x7ff94b810400] frame P:711   Avg QP:19.73  size: 18712
    [libx264 @ 0x7ff94b810400] frame B:1807  Avg QP:21.53  size:  5884
    [libx264 @ 0x7ff94b810400] consecutive B-frames:  3.4%  5.0%  4.9% 86.6%
    [libx264 @ 0x7ff94b810400] mb I  I16..4: 38.2% 49.3% 12.5%
    [libx264 @ 0x7ff94b810400] mb P  I16..4: 12.4% 14.0%  1.0%  P16..4: 29.6%  4.8%  1.9%  0.0%  0.0%    skip:36.2%
    [libx264 @ 0x7ff94b810400] mb B  I16..4:  1.5%  1.2%  0.1%  B16..8: 27.3%  1.6%  0.1%  direct: 1.8%  skip:66.4%  L0:45.8% L1:51.4% BI: 2.8%
    [libx264 @ 0x7ff94b810400] 8x8 transform intra:49.5% inter:85.4%
    [libx264 @ 0x7ff94b810400] coded y,uvDC,uvAC intra: 21.2% 22.3% 2.5% inter: 4.6% 7.0% 0.0%
    [libx264 @ 0x7ff94b810400] i16 v,h,dc,p: 23% 26% 10% 41%
    [libx264 @ 0x7ff94b810400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 19% 35%  3%  3%  3%  3%  3%  2%
    [libx264 @ 0x7ff94b810400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 20% 16%  5%  7%  6%  5%  5%  4%
    [libx264 @ 0x7ff94b810400] i8c dc,h,v,p: 67% 16% 15%  2%
    [libx264 @ 0x7ff94b810400] Weighted P-Frames: Y:7.3% UV:4.2%
    [libx264 @ 0x7ff94b810400] ref P L0: 66.3%  8.7% 17.9%  7.0%  0.1%
    [libx264 @ 0x7ff94b810400] ref B L0: 88.2% 10.1%  1.7%
    [libx264 @ 0x7ff94b810400] ref B L1: 94.9%  5.1%
    [libx264 @ 0x7ff94b810400] kb/s:2026.12
    [aac @ 0x7ff94b072400] Qavg: 635.626

    The resulting output is identical to the input video, but does not contain the desired image video at the end.

    One thing I have noticed : When I inspect the video files on mac (Get info) they always contain these lines at ’More info’ :

    Dimensions: 1920 x 1080
    Codecs: H.264, AAC
    Color profile: HD(1-1-1)
    Duration: 01:42
    Audio channels: 2
    Last opened: Today 11:02

    However, the video’s which pass through the drawtext filter have this :

    Dimensions: 1920 x 1080
    Codecs: AAC, H.264
    Duration: 00:10
    Audio channels: 2
    Last opened: Today 11:07

    As you can see, there is no color profile entry, and the codecs have switched places. I assume this is related to my issue, but I can’t seem to find a fix for it.

    PS : The application will run in a php environment (Symfony). I noticed the concat command wasn’t available in the Symfony bundle for ffmpeg, so I’m using the regular terminal commands. I’ll execute these using php.

    EDIT
    Attempt 3

    On advise of a coworker, I tried converting the video to .avi and reconverting to .mp4, in the hopes this would lose any corrupted or extra info included by the drawtext filter. This spits out a completely different error.

    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f812413da00] Auto-inserting h264_mp4toannexb bitstream filtereed=0.516x    
    [concat @ 0x7f8124009a00] DTS 1569260 < 2551000 out of order
    [h264 @ 0x7f8124846800] left block unavailable for requested intra4x4 mode -1
    [h264 @ 0x7f8124846800] error while decoding MB 0 0, bytestream 47919
    [h264 @ 0x7f8124846800] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
    [aac @ 0x7f8125809a00] Queue input is backward in time
    [aac @ 0x7f8125815a00] Queue input is backward in time
    [h264 @ 0x7f8124846e00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one
    [h264 @ 0x7f8124846e00] chroma_log2_weight_denom 26 is out of range
    [h264 @ 0x7f8124846e00] deblocking_filter_idc 32 out of range
    [h264 @ 0x7f8124846e00] decode_slice_header error
    [h264 @ 0x7f8124846e00] no frame!
    [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902912, current: 4505491; changing to 4902913. This may result in incorrect timestamps in the output file.
    [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902912, current: 4505491; changing to 4902913. This may result in incorrect timestamps in the output file.
    [h264 @ 0x7f8124803400] reference overflow 20 > 15 or 0 > 15
    [h264 @ 0x7f8124803400] decode_slice_header error
    [h264 @ 0x7f8124803400] no frame!
    [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902913, current: 4506515; changing to 4902914. This may result in incorrect timestamps in the output file.
    [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902913, current: 4506515; changing to 4902914. This may result in incorrect timestamps in the output file.
    [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902914, current: 4507539; changing to 4902915. This may result in incorrect timestamps in the output file.
    [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902914, current: 4507539; changing to 4902915. This may result in incorrect timestamps in the output file.

    # Again, this continues for quite a while.