Hi, This is a refactor of my last email, which is stuck in moderation queue. Hope this gets sent asap.
I've recently posted my question here <http://superuser.com/questions/1162961/screen-capture-using-ffmpeg-f-avfoundation-and-libvpx-too-many-problems>, so please, as you are all "ffmpeg-experts" (more than me for sure), I'd appreciate your help. Thank you very much. On Tue, Jan 3, 2017 at 10:43 AM Demián Andrés Rodriguez <[email protected]> wrote: > Hi guys, > > I'm trying to capture screen and audio with ffmpeg (latest static build > snapshot) on Mac OSX 10.12.2. > > This library is my last option, since web technologies suck at video > capture or have bugs <https://github.com/electron/electron/issues/8325>, > and I'm not a Swift developer > <https://developer.apple.com/reference/avfoundation>. > > I would like to capture screen and audio and encode using > vp8/vp9/vorbis/opus. I'm getting video but audio breaks, there is no audio > at all. > Capturing audio only works fine using both vorbis and opus. > > Here are my two commands. I'm spawning process using Node.js and stopping > after 10 seconds for testing. > Am I missing one of the million options available for video encoding or > one of the million options available for audio encoding? Is this a bug? > > ffmpeg -y -f avfoundation -capture_cursor 1 -framerate 25 -i 1:0 -c:v > libvpx -c:a libvorbis -b:v 1M -b:a 128K capture.webm > > *Output:* > > ffmpeg version N-82977-g8fd3e02-tessus Copyright (c) 2000-2016 the FFmpeg > developers > built with Apple LLVM version 8.0.0 (clang-800.0.42.1) > configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg > --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl > --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm > --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb > --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger > --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora > --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis > --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 > --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 > --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb > libavutil 55. 43.100 / 55. 43.100 > libavcodec 57. 70.100 / 57. 70.100 > libavformat 57. 61.100 / 57. 61.100 > libavdevice 57. 2.100 / 57. 2.100 > libavfilter 6. 68.100 / 6. 68.100 > libswscale 4. 3.101 / 4. 3.101 > libswresample 2. 4.100 / 2. 4.100 > libpostproc 54. 2.100 / 54. 2.100 > [avfoundation @ 0x7fdcc1800800] Selected pixel format (yuv420p) is not > supported by the input device. > [avfoundation @ 0x7fdcc1800800] Supported pixel formats: > [avfoundation @ 0x7fdcc1800800] uyvy422 > [avfoundation @ 0x7fdcc1800800] yuyv422 > [avfoundation @ 0x7fdcc1800800] nv12 > [avfoundation @ 0x7fdcc1800800] 0rgb > [avfoundation @ 0x7fdcc1800800] bgr0 > [avfoundation @ 0x7fdcc1800800] Overriding selected pixel format to use > uyvy422 instead. > [avfoundation @ 0x7fdcc1800800] Stream #0: not enough frames to estimate > rate; consider increasing probesize > Input #0, avfoundation, from '1:0': > Duration: N/A, start: 13946.237833, bitrate: 2822 kb/s > Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2560x1600, > 1000k tbr, 1000k tbn, 1000k tbc > Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s > [libvpx @ 0x7fdcc0045600] v1.6.0 > Output #0, webm, to 'capture.webm': > Metadata: > encoder : Lavf57.61.100 > Stream #0:0: Video: vp8 (libvpx), yuv420p, 2560x1600, q=-1--1, 1000 > kb/s, 1000k fps, 1k tbn, 1000k tbc > Metadata: > encoder : Lavc57.70.100 libvpx > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 > Stream #0:1: Audio: vorbis (libvorbis), 44100 Hz, stereo, fltp, 128 > kb/s > Metadata: > encoder : Lavc57.70.100 libvorbis > Stream mapping: > Stream #0:0 -> #0:0 (rawvideo (native) -> vp8 (libvpx)) > Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis)) > Press [q] to stop, [?] for help > frame= 16 fps=1.7 q=0.0 Lsize= 998kB time=00:00:09.52 bitrate= > 858.9kbits/s speed=1.01x > video:993kB audio:0kB subtitle:0kB other streams:0kB global headers:4kB > muxing overhead: 0.485425% > Exiting normally, received signal 15. > > ffmpeg -y -f avfoundation -capture_cursor 1 -framerate 25 -i 1:0 -c:v > libvpx-vp9 -c:a libopus -crf 10 -b:v 0 -b:a 128K capture.webm > > *Output:* > > ffmpeg version N-82977-g8fd3e02-tessus Copyright (c) 2000-2016 the FFmpeg > developers > built with Apple LLVM version 8.0.0 (clang-800.0.42.1) > configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg > --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl > --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm > --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb > --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger > --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora > --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis > --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 > --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 > --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb > libavutil 55. 43.100 / 55. 43.100 > libavcodec 57. 70.100 / 57. 70.100 > libavformat 57. 61.100 / 57. 61.100 > libavdevice 57. 2.100 / 57. 2.100 > libavfilter 6. 68.100 / 6. 68.100 > libswscale 4. 3.101 / 4. 3.101 > libswresample 2. 4.100 / 2. 4.100 > libpostproc 54. 2.100 / 54. 2.100 > [avfoundation @ 0x7fc973800000] Selected pixel format (yuv420p) is not > supported by the input device. > [avfoundation @ 0x7fc973800000] Supported pixel formats: > [avfoundation @ 0x7fc973800000] uyvy422 > [avfoundation @ 0x7fc973800000] yuyv422 > [avfoundation @ 0x7fc973800000] nv12 > [avfoundation @ 0x7fc973800000] 0rgb > [avfoundation @ 0x7fc973800000] bgr0 > [avfoundation @ 0x7fc973800000] Overriding selected pixel format to use > uyvy422 instead. > [avfoundation @ 0x7fc973800000] Stream #0: not enough frames to estimate > rate; consider increasing probesize > Input #0, avfoundation, from '1:0': > Duration: N/A, start: 14060.817500, bitrate: 2822 kb/s > Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2560x1600, > 1000k tbr, 1000k tbn, 1000k tbc > Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s > [libvpx-vp9 @ 0x7fc97488ca00] v1.6.0 > Output #0, webm, to 'capture.webm': > Metadata: > encoder : Lavf57.61.100 > Stream #0:0: Video: vp9 (libvpx-vp9), yuv422p, 2560x1600, q=-1--1, > 1000k fps, 1k tbn, 1000k tbc > Metadata: > encoder : Lavc57.70.100 libvpx-vp9 > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 > Stream #0:1: Audio: opus (libopus), 48000 Hz, stereo, flt, 128 kb/s > Metadata: > encoder : Lavc57.70.100 libopus > Stream mapping: > Stream #0:0 -> #0:0 (rawvideo (native) -> vp9 (libvpx-vp9)) > Stream #0:1 -> #0:1 (pcm_f32le (native) -> opus (libopus)) > Press [q] to stop, [?] for help > frame= 32 fps=3.7 q=0.0 size= 1kB time=00:00:01.65 bitrate= > 2.6kbits/s speed=0.193x > > > frame= 33 fps=1.5 q=0.0 Lsize= 1423kB time=00:00:09.08 > bitrate=1283.6kbits/s speed=0.422x > video:1411kB audio:11kB subtitle:0kB other streams:0kB global headers:0kB > muxing overhead: 0.079128% > Exiting normally, received signal 15. > > Please I need help! > > Thanks! > > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
