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• lavc/videotoolboxdec : fix writing too many 1 bits for the reserved fields

  16 avril 2022, par rcombs

  lavc/videotoolboxdec : fix writing too many 1 bits for the reserved fields
  Signed-off-by : rcombs <rcombs@rcombs.me>
  

  • [DH] libavcodec/videotoolbox.c

• avformat/mxfdec : Do not clear array in mxf_read_strong_ref_array() before writing

  13 mars 2022, par Michael Niedermayer

  avformat/mxfdec : Do not clear array in mxf_read_strong_ref_array() before writing
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/mxfdec.c

• FFmpeg overlay PNG after scaling has not necessary black borders

  24 mars 2021, par Mikołaj Henklewski

  I have two PNG files that I want to add to the video :

  


  

  • Two lines text

  


  • Circle

  


  


  but on the final video, they have black borders (they do not have it originally !) Actual Result.. The question is why FFmpeg is adding it on scale effect, and how to avoid adding it ? Command is :

  


  ffmpeg -i 3d9678e2e58c4d08a24363468d0cfd3e.mp4 -i caption-1616544596077-d.png -i caption-1616544596080-d.png -filter_complex 
[1:v]rotate=6.178465552059927:c=none:ow=rotw(6.178465552059927):oh=roth(6.178465552059927)[1_rot];
[1_rot]scale=iw/2:ih/2[1_rot_scale];
[0:v][1_rot_scale]overlay=x=288:y=50:enable='between(t,0,3.2)':format=auto[1_out];
[2:v]rotate=0.0:c=none:ow=rotw(0.0):oh=roth(0.0)[2_rot];[2_rot]scale=iw/2:ih/2[2_rot_scale];
[1_out[2_rot_scale]overlay=x=589:y=71:enable='between(t,0,3.2)':format=auto" -preset ultrafast -crf 23 out.mp4


  


  Here is also log from ffmpeg :

  


  ffmpeg version 4.3.2 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.2_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --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-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --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-librtmp --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3d9678e2e58c4d08a24363468d0cfd3e.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.77.100
  Duration: 00:00:03.72, start: 0.000000, bitrate: 2333 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2331 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
Input #1, png_pipe, from 'caption-1616544596077-d.png':
  Duration: N/A, bitrate: N/A
    Stream #1:0: Video: png, rgba(pc), 1382x884, 25 tbr, 25 tbn, 25 tbc
Input #2, png_pipe, from 'caption-1616544596080-d.png':
  Duration: N/A, bitrate: N/A
    Stream #2:0: Video: png, rgba(pc), 612x612, 25 tbr, 25 tbn, 25 tbc
File 'out.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 (h264) -> overlay:main
  Stream #1:0 (png) -> rotate
  Stream #2:0 (png) -> rotate
  overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[libx264 @ 0x7f8999025c00] using SAR=1/1
[libx264 @ 0x7f8999025c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7f8999025c00] profile High 4:4:4 Predictive, level 3.1, 4:4:4, 8-bit
[libx264 @ 0x7f8999025c00] 264 - core 161 r3048 b86ae3c - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to 'out.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.45.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=   93 fps=0.0 q=-1.0 Lsize=     967kB time=00:00:03.68 bitrate=2152.5kbits/s speed=8.66x
video:966kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.122451%
[libx264 @ 0x7f8999025c00] frame I:1     Avg QP:20.00  size: 85204
[libx264 @ 0x7f8999025c00] frame P:92    Avg QP:18.23  size:  9817
[libx264 @ 0x7f8999025c00] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x7f8999025c00] mb P  I16..4:  1.7%  0.0%  0.0%  P16..4: 19.9%  0.0%  0.0%  0.0%  0.0%    skip:78.4%
[libx264 @ 0x7f8999025c00] coded y,u,v intra: 33.6% 3.0% 4.9% inter: 8.6% 0.9% 0.8%
[libx264 @ 0x7f8999025c00] i16 v,h,dc,p: 30% 33% 18% 18%
[libx264 @ 0x7f8999025c00] kb/s:2125.53