[FFmpeg-trac] #6111(avdevice:open): macOS AVFoundation screen capture looks awful but FaceTime HD Cam capture fine

FFmpeg trac at avcodec.org
Tue Jan 31 16:36:04 EET 2017


#6111: macOS AVFoundation screen capture looks awful but FaceTime HD Cam capture
fine
-------------------------------------+-------------------------------------
             Reporter:  mixelpix     |                    Owner:
                 Type:  defect       |  thilo.borgmann
             Priority:  normal       |                   Status:  open
              Version:  unspecified  |                Component:  avdevice
             Keywords:               |               Resolution:
  avfoundation                       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by mixelpix):

 Replying to [comment:8 cehoyos]:
 > Please test it and provide your command line together with the complete,
 uncut console output to make this a valid ticket.

 I've reinstalled FFmpeg with the --HEAD option:

 {{{$  brew install ffmpeg --HEAD}}}

 ...and this is the entire console output from capturing my desktop with AV
 Foundation

 {{{
 $  ffmpeg -f avfoundation -i "1:none" desktop.mov
 ffmpeg version git-2017-01-31-3405d6c Copyright (c) 2000-2017 the FFmpeg
 developers
   built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-3405d6c --enable-
 shared --enable-pthreads --enable-gpl --enable-version3 --enable-
 hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-
 ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-
 opencl --disable-lzma --enable-vda
   libavutil      55. 45.100 / 55. 45.100
   libavcodec     57. 75.100 / 57. 75.100
   libavformat    57. 66.101 / 57. 66.101
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 72.100 /  6. 72.100
   libavresample   3.  2.  0 /  3.  2.  0
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 [avfoundation @ 0x7fc803802600] Selected pixel format (yuv420p) is not
 supported by the input device.
 [avfoundation @ 0x7fc803802600] Supported pixel formats:
 [avfoundation @ 0x7fc803802600]   uyvy422
 [avfoundation @ 0x7fc803802600]   yuyv422
 [avfoundation @ 0x7fc803802600]   nv12
 [avfoundation @ 0x7fc803802600]   0rgb
 [avfoundation @ 0x7fc803802600]   bgr0
 [avfoundation @ 0x7fc803802600] Overriding selected pixel format to use
 uyvy422 instead.
 Input #0, avfoundation, from '1:none':
   Duration: N/A, start: 87118.887667, bitrate: N/A
     Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1366x768,
 30 tbr, 1000k tbn, 1000k tbc
 No pixel format specified, yuv422p for H.264 encoding chosen.
 Use -pix_fmt yuv420p for compatibility with outdated media players.
 [libx264 @ 0x7fc803834e00] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX
 [libx264 @ 0x7fc803834e00] profile High 4:2:2, level 3.2, 4:2:2 8-bit
 [libx264 @ 0x7fc803834e00] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2016 - 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
 Output #0, mov, to 'desktop.mov':
   Metadata:
     encoder         : Lavf57.66.101
     Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv422p,
 1366x768, q=-1--1, 30 fps, 15360 tbn, 30 tbc
     Metadata:
       encoder         : Lavc57.75.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
 Press [q] to stop, [?] for help
 frame=  382 fps= 29 q=-1.0 Lsize=     951kB time=00:00:12.63 bitrate=
 616.5kbits/s dup=6 drop=0 speed=0.953x
 video:945kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.554439%
 [libx264 @ 0x7fc803834e00] frame I:2     Avg QP:19.70  size:204812
 [libx264 @ 0x7fc803834e00] frame P:98    Avg QP:22.37  size:  5188
 [libx264 @ 0x7fc803834e00] frame B:282   Avg QP:33.66  size:   175
 [libx264 @ 0x7fc803834e00] consecutive B-frames:  1.0%  1.0%  1.6% 96.3%
 [libx264 @ 0x7fc803834e00] mb I  I16..4: 12.7% 44.1% 43.2%
 [libx264 @ 0x7fc803834e00] mb P  I16..4:  0.2%  0.6%  0.6%  P16..4:  7.3%
 1.1%  0.8%  0.0%  0.0%    skip:89.5%
 [libx264 @ 0x7fc803834e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.4%
 0.1%  0.0%  direct: 0.0%  skip:97.4%  L0:25.9% L1:73.6% BI: 0.5%
 [libx264 @ 0x7fc803834e00] 8x8 transform intra:44.7% inter:72.7%
 [libx264 @ 0x7fc803834e00] coded y,uvDC,uvAC intra: 71.4% 83.6% 81.3%
 inter: 0.7% 1.6% 0.3%
 [libx264 @ 0x7fc803834e00] i16 v,h,dc,p:  3% 91%  0%  6%
 [libx264 @ 0x7fc803834e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  5% 84%  8%  0%
 0%  0%  2%  0%  1%
 [libx264 @ 0x7fc803834e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  4% 73%  9%  0%
 1%  0%  9%  0%  3%
 [libx264 @ 0x7fc803834e00] i8c dc,h,v,p: 35% 62%  2%  1%
 [libx264 @ 0x7fc803834e00] Weighted P-Frames: Y:3.1% UV:3.1%
 [libx264 @ 0x7fc803834e00] ref P L0: 64.7%  9.2% 22.6%  3.0%  0.5%
 [libx264 @ 0x7fc803834e00] ref B L0: 83.8% 14.2%  2.0%
 [libx264 @ 0x7fc803834e00] ref B L1: 95.7%  4.3%
 [libx264 @ 0x7fc803834e00] kb/s:607.85
 $
 }}}

 ...and this is the result:

 [[Image(desktop.2.jpg)]]

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6111#comment:10>
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