[FFmpeg-trac] #7450(undetermined:new): Audio not working when recording FLV on OSX

FFmpeg trac at avcodec.org
Thu Sep 20 23:50:11 EEST 2018


#7450: Audio not working when recording FLV on OSX
-------------------------------------+-------------------------------------
             Reporter:  mirraj2      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by mirraj2):

 Good point, I just tested using .mov and .mp4 and the problem exists for
 those formats as well.


 ./ffmpeg2 -v info -f avfoundation -r 30 -s 1440x900 -i 1:0 -c:v libx264
 -pix_fmt yuv420p -preset veryfast -b:v 2500k -f flv out.flv
 ffmpeg version N-91972-gbd10c1e9a8-tessus  https://evermeet.cx/ffmpeg/
 Copyright (c) 2000-2018 the FFmpeg developers
   built with Apple LLVM version 10.0.0 (clang-1000.11.45.2)
   configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-
 version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
 --enable-libaom --enable-libass --enable-libbluray --enable-libfreetype
 --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus
 --enable-librubberband --enable-libshine --enable-libsnappy --enable-
 libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-
 libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
 --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs
 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi
 --enable-version3 --pkg-config-flags=--static --disable-ffplay
   libavutil      56. 19.101 / 56. 19.101
   libavcodec     58. 30.100 / 58. 30.100
   libavformat    58. 18.101 / 58. 18.101
   libavdevice    58.  4.103 / 58.  4.103
   libavfilter     7. 32.100 /  7. 32.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 [avfoundation @ 0x7fa259001600] Selected pixel format (yuv420p) is not
 supported by the input device.
 [avfoundation @ 0x7fa259001600] Supported pixel formats:
 [avfoundation @ 0x7fa259001600]   uyvy422
 [avfoundation @ 0x7fa259001600]   yuyv422
 [avfoundation @ 0x7fa259001600]   nv12
 [avfoundation @ 0x7fa259001600]   0rgb
 [avfoundation @ 0x7fa259001600]   bgr0
 [avfoundation @ 0x7fa259001600] Overriding selected pixel format to use
 uyvy422 instead.
 [avfoundation @ 0x7fa259001600] Stream #0: not enough frames to estimate
 rate; consider increasing probesize
 Input #0, avfoundation, from '1:0':
   Duration: N/A, start: 112847.856000, bitrate: 2822 kb/s
     Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 3360x2100,
 1000k tbr, 1000k tbn, 1000k tbc
     Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
 File 'out.flv' already exists. Overwrite ? [y/N] y
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
   Stream #0:1 -> #0:1 (pcm_f32le (native) -> mp3 (libmp3lame))
 Press [q] to stop, [?] for help
 [libx264 @ 0x7fa25a86e800] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 BMI2 AVX2
 [libx264 @ 0x7fa25a86e800] profile High, level 5.1, 4:2:0, 8-bit
 [libx264 @ 0x7fa25a86e800] 264 - core 157 r2932 303c484 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options:
 cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1
 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1
 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12
 lookahead_threads=4 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=1 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=abr mbtree=1 bitrate=2500
 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, flv, to 'out.flv':
   Metadata:
     encoder         : Lavf58.18.101
     Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007),
 yuv420p(progressive), 3360x2100, q=-1--1, 2500 kb/s, 30 fps, 1k tbn, 30
 tbc
     Metadata:
       encoder         : Lavc58.30.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/2500000 buffer size: 0 vbv_delay: -1
     Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100
 Hz, stereo, fltp
     Metadata:
       encoder         : Lavc58.30.100 libmp3lame
 frame=  178 fps= 30 q=-1.0 Lsize=    1255kB time=00:00:09.00
 bitrate=1141.8kbits/s speed= 1.5x
 video:1192kB audio:57kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.483774%
 [libx264 @ 0x7fa25a86e800] frame I:1     Avg QP:24.45  size:269563
 [libx264 @ 0x7fa25a86e800] frame P:45    Avg QP:25.49  size: 20396
 [libx264 @ 0x7fa25a86e800] frame B:132   Avg QP:20.80  size:   248
 [libx264 @ 0x7fa25a86e800] consecutive B-frames:  1.1%  0.0%  0.0% 98.9%
 [libx264 @ 0x7fa25a86e800] mb I  I16..4: 60.4% 14.9% 24.7%
 [libx264 @ 0x7fa25a86e800] mb P  I16..4:  0.4%  0.1%  0.1%  P16..4:  9.2%
 0.2%  0.1%  0.0%  0.0%    skip:89.9%
 [libx264 @ 0x7fa25a86e800] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%
 0.0%  0.0%  direct: 0.1%  skip:99.9%  L0:26.4% L1:73.5% BI: 0.1%
 [libx264 @ 0x7fa25a86e800] final ratefactor: 23.82
 [libx264 @ 0x7fa25a86e800] 8x8 transform intra:14.1% inter:24.3%
 [libx264 @ 0x7fa25a86e800] coded y,uvDC,uvAC intra: 34.7% 30.1% 19.1%
 inter: 0.9% 0.9% 0.4%
 [libx264 @ 0x7fa25a86e800] i16 v,h,dc,p: 75% 20%  3%  2%
 [libx264 @ 0x7fa25a86e800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 28% 29%  5%
 5%  4%  6%  4%  8%
 [libx264 @ 0x7fa25a86e800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 24% 12%  5%
 7%  6%  7%  5%  7%
 [libx264 @ 0x7fa25a86e800] i8c dc,h,v,p: 71% 17%  9%  3%
 [libx264 @ 0x7fa25a86e800] Weighted P-Frames: Y:0.0% UV:0.0%
 [libx264 @ 0x7fa25a86e800] kb/s:1645.08
 Exiting normally, received signal 2.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7450#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list