Re: [FFmpeg-user] Errors in swscaler or broken video

WR Thu, 13 May 2021 08:23:24 -0700

Am 12.05.21 um 22:00 schrieb Carl Eugen Hoyos:

Am Mi., 12. Mai 2021 um 08:39 Uhr schrieb WR <wolle...@freenet.de>:

Maybe, there is a way, to scale the subtitles in that way, that they
would fit the videos size.


Yes, this is supposed to work fine.
Please provide the command line you tested together with
the complete, uncut console output to allow us to better
understand your issue.

[snip]

Hello,

at first the commandline and output of the conversion:

ffmpeg -analyzeduration 400M -probesize 400M -fflags +genpts -safe 0-protocol_whitelist subfile,file,concat -f concat -ss 00:20:14 -ii.concat -t 00:08:00 -map 0 -c copy -c:v libx264 -preset medium-filter:v crop=iw-0-0:ih-70-70:0:70 ./Spielfilme/Indiana\ Jones\ Itest.mkvffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpegdevelopers

  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)

configuration: --prefix=/usr --extra-version=1ubuntu0.1--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu--incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl--disable-stripping --enable-avresample --disable-filter=resample--enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca--enable-libcdio --enable-libcodec2 --enable-libflite--enable-libfontconfig --enable-libfreetype --enable-libfribidi--enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame--enable-libmysofa --enable-libopenjpeg --enable-libopenmpt--enable-libopus --enable-libpulse --enable-librsvg--enable-librubberband --enable-libshine --enable-libsnappy--enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora--enable-libtwolame --enable-libvidstab --enable-libvorbis--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265--enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi--enable-lv2 --enable-omx --enable-openal --enable-opencl--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm--enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r--enable-libx264 --enable-shared

  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, concat, from 'i.concat':
  Duration: 01:50:36.60, start: 0.000000, bitrate: 0 kb/s

Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg,progressive), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 90k tbc

    Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
    Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:3: Subtitle: dvd_subtitle
    Stream #0:4: Subtitle: dvd_subtitle
    Stream #0:5: Subtitle: dvd_subtitle
    Stream #0:6: Subtitle: dvd_subtitle

File './Spielfilme/Indiana Jones Itest.mkv' already exists. Overwrite ?[y/N] y

Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (copy)
  Stream #0:4 -> #0:4 (copy)
  Stream #0:5 -> #0:5 (copy)
  Stream #0:6 -> #0:6 (copy)
Press [q] to stop, [?] for help
[libx264 @ 0x563b99fd0c40] using SAR=64/45
[libx264 @ 0x563b99fd0c40] using cpu capabilities: MMX2 SSE2Fast LZCNT
[libx264 @ 0x563b99fd0c40] profile High, level 3.0

[libx264 @ 0x563b99fd0c40] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html -options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=18x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crfmbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40aq=1:1.00

Output #0, matroska, to './Spielfilme/Indiana Jones Itest.mkv':
  Metadata:
    encoder         : Lavf58.29.100

Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,720x436 [SAR 64:45 DAR 256:109], q=-1--1, 25 fps, 1k tbn, 25 tbc

    Metadata:
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side),fltp, 448 kb/sStream #0:2: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo,fltp, 192 kb/s

    Stream #0:3: Subtitle: dvd_subtitle ([255][255][255][255] / 0xFFFFFFFF)
    Stream #0:4: Subtitle: dvd_subtitle ([255][255][255][255] / 0xFFFFFFFF)
    Stream #0:5: Subtitle: dvd_subtitle ([255][255][255][255] / 0xFFFFFFFF)
    Stream #0:6: Subtitle: dvd_subtitle ([255][255][255][255] / 0xFFFFFFFF)

frame=11997 fps= 39 q=-1.0 Lsize= 75237kB time=00:07:59.99bitrate=1284.1kbits/s speed=1.56xvideo:36685kB audio:37533kB subtitle:719kB other streams:0kB globalheaders:0kB muxing overhead: 0.400157%

[libx264 @ 0x563b99fd0c40] frame I:83    Avg QP:20.05  size: 22853
[libx264 @ 0x563b99fd0c40] frame P:3235  Avg QP:22.63  size:  6353
[libx264 @ 0x563b99fd0c40] frame B:8679  Avg QP:25.17  size:  1742
[libx264 @ 0x563b99fd0c40] consecutive B-frames:  2.5%  2.2%  3.0% 92.3%
[libx264 @ 0x563b99fd0c40] mb I  I16..4: 13.3% 72.6% 14.1%

[libx264 @ 0x563b99fd0c40] mb P I16..4: 1.7% 6.5% 1.1% P16..4:44.9% 14.3% 8.1% 0.0% 0.0% skip:23.4%[libx264 @ 0x563b99fd0c40] mb B I16..4: 0.1% 0.5% 0.1% B16..8:45.1% 3.5% 0.6% direct: 1.3% skip:48.8% L0:42.4% L1:53.0% BI: 4.6%

[libx264 @ 0x563b99fd0c40] 8x8 transform intra:70.7% inter:82.7%

[libx264 @ 0x563b99fd0c40] coded y,uvDC,uvAC intra: 62.9% 66.5% 24.5%inter: 12.4% 15.0% 0.6%

[libx264 @ 0x563b99fd0c40] i16 v,h,dc,p: 36% 14%  6% 43%

[libx264 @ 0x563b99fd0c40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 10% 20%6% 7% 10% 6% 9% 6%[libx264 @ 0x563b99fd0c40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 9% 15%5% 7% 10% 5% 7% 3%

[libx264 @ 0x563b99fd0c40] i8c dc,h,v,p: 50% 15% 28%  7%
[libx264 @ 0x563b99fd0c40] Weighted P-Frames: Y:4.7% UV:2.3%
[libx264 @ 0x563b99fd0c40] ref P L0: 58.0% 17.3% 18.0%  6.5%  0.3%
[libx264 @ 0x563b99fd0c40] ref B L0: 91.9%  6.5%  1.6%
[libx264 @ 0x563b99fd0c40] ref B L1: 96.6%  3.4%
[libx264 @ 0x563b99fd0c40] kb/s:626.08

Everything works fine.

#######################################################################

second output of ffplay of the cropped video with swscaler errors(subtitles are on, I seeked to one of the problematic parts, after00:04:00, errors do also appear without seeking)

  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)

  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, matroska,webm, from './Spielfilme/Indiana Jones Itest.mkv':
  Metadata:
    ENCODER         : Lavf58.29.100
  Duration: 00:08:00.55, start: 0.000000, bitrate: 1282 kb/s

Stream #0:0: Video: h264 (High), yuv420p(progressive), 720x436 [SAR64:45 DAR 256:109], 25 fps, 25 tbr, 1k tbn, 50 tbc (default)

    Metadata:
      ENCODER         : Lavc58.54.100 libx264
      DURATION        : 00:08:00.528000000
    Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    Metadata:
      DURATION        : 00:08:00.552000000
    Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      DURATION        : 00:08:00.552000000
    Stream #0:3: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:4: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:5: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:6: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
Seek to 49% ( 0:03:55) of total duration ( 0:08:00)       B f=0/0
Seek to 49% ( 0:03:55) of total duration ( 0:08:00)       B f=0/0
Seek to 50% ( 0:03:57) of total duration ( 0:08:00)       B f=0/0
Seek to 50% ( 0:04:00) of total duration ( 0:08:00)       B f=0/0
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 193x0 -> 193x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f22b7c0] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
[swscaler @ 0x556d3f253d40] 203x0 -> 203x0 is invalid scaling dimension
Cannot initialize the conversion context
 264.79 A-V: -0.023 fd=   0 aq= 7134KB vq= 8193KB sq=33832B f=0/0

If there are no errors, the video runs fine, only the subtitles arecropped at the bottom.(-> screenshot).video output is black, when the errors appear in chunks of some secondsat commandline.


#######################################################################

last output of ffplay without errors with the same video, same time butwith switched off subtitles, as you can see.

  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)

  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, matroska,webm, from './Spielfilme/Indiana Jones Itest.mkv':
  Metadata:
    ENCODER         : Lavf58.29.100
  Duration: 00:08:00.55, start: 0.000000, bitrate: 1282 kb/s

Stream #0:0: Video: h264 (High), yuv420p(progressive), 720x436 [SAR64:45 DAR 256:109], 25 fps, 25 tbr, 1k tbn, 50 tbc (default)

    Metadata:
      ENCODER         : Lavc58.54.100 libx264
      DURATION        : 00:08:00.528000000
    Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    Metadata:
      DURATION        : 00:08:00.552000000
    Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      DURATION        : 00:08:00.552000000
    Stream #0:3: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:4: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:5: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
    Stream #0:6: Subtitle: dvd_subtitle (default)
    Metadata:
      DURATION        : 00:08:00.024000000
Switch subtitle stream from #3 to #4KB vq= 9132KB sq=    0B f=0/0
Switch subtitle stream from #4 to #5KB vq= 9126KB sq=    0B f=0/0
Switch subtitle stream from #5 to #6KB vq= 9127KB sq=    0B f=0/0
Switch subtitle stream from #6 to #-1B vq= 9158KB sq=    0B f=0/0
Seek to 47% ( 0:03:46) of total duration ( 0:08:00)       B f=0/0
Seek to 48% ( 0:03:50) of total duration ( 0:08:00)       B f=0/0
Seek to 50% ( 0:03:58) of total duration ( 0:08:00)       B f=0/0
Seek to 50% ( 0:04:01) of total duration ( 0:08:00)       B f=0/0
 266.42 A-V: -0.032 fd=   0 aq=   59KB vq=   85KB sq=    0B f=0/0


#######################################################################

Subtitles, if they are on, are cropped at the bottom, because it seems,that they do not fit to the cropped video. Of course this arebitmap-subtitles from a dvd.

I put the cropped video snippet and a screenshot here for you, also theconcat-file, which is created with dvd2concat script from ffmpeg sources:


https://webmail.freenet.de/Cloud/?shareToken=1b19a0928b483b75b382830937698a114e6ccea24b65f92ec1d098e9b55f800a

The link is valid for 14 days.

Thank you for this great peace of software.
Wolfgang


--

- May the source be with you -
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Re: [FFmpeg-user] Errors in swscaler or broken video

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