Hi Moritz On Sun, Apr 26, 2015 at 3:14 AM, Moritz Barsnick <[email protected]> wrote:
> Hi Kevin, > > On Sat, Apr 25, 2015 at 20:42:12 -0700, kevin wrote: > > The recorded audio is stuttering, breaks, or there is short bursts. > > > > ffmpeg -f avfoundation -i "1:0" -r 25 -c:v libx264 -preset fast -crf 22 > > -c:a libfdk_aac -b:a 128k -ar 44100 -s 640x480 screen.mp4 > > What happens to the audio if you disable the capturing of video? > (Something like "-vn".) Just an idea of something to test. > With -vn audio quality is great, no problem at all. Furthermore, as mentioned in my first email, with -i "0:0" [FaceTime camera and mic] both audio and video is great. The problem is only with -i "1:0". Furthermore, instead of using "-r", avfoundation should recently > support the input option "-framerate" (to be set before "-i"). This has > nothing to do with your issue If I add -framerate before "-i" and also before -f it exits with error message option not found: ffmpeg -f avfoundation -framerate 25 -i "1:0" -c:v libx264 -preset fast -crf 22 -c:a libfdk_aac -b:a 128k -ar 44100 -s 640x480 -vn screen.mp4 ffmpeg -framerate 25 -f avfoundation -i "1:0" -c:v libx264 -preset fast -crf 22 -c:a libfdk_aac -b:a 128k -ar 44100 -s 640x480 -vn screen.mp4 Option framerate not found. Full output at end of email. > I'm not at all sure any of this will help you though. I'm just thinking > out loud. > Thank you very much for replying and helping, I really appreciate it. FFmpeg is amazing and so is the community around it. ffmpeg -f avfoundation -framerate 25 -i "1:0" -c:v libx264 -preset fast -crf 22 -c:a libfdk_aac -b:a 128k -ar 44100 -s 640x480 -vn screen.mp4 ffmpeg version 2.6.1 Copyright (c) 2000-2015 the FFmpeg developers built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn) configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-libfaac --enable-libass --enable-ffplay --enable-libfdk-aac --enable-openssl --enable-libopus --enable-libquvi --enable-libx265 --enable-nonfree --enable-vda libavutil 54. 20.100 / 54. 20.100 libavcodec 56. 26.100 / 56. 26.100 libavformat 56. 25.101 / 56. 25.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 11.102 / 5. 11.102 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 [avfoundation @ 0x7fd77400da00] Selected pixel format (yuv420p) is not supported by the input device. [avfoundation @ 0x7fd77400da00] Supported pixel formats: [avfoundation @ 0x7fd77400da00] uyvy422 [avfoundation @ 0x7fd77400da00] yuyv422 [avfoundation @ 0x7fd77400da00] nv12 [avfoundation @ 0x7fd77400da00] 0rgb [avfoundation @ 0x7fd77400da00] bgr0 [avfoundation @ 0x7fd77400da00] Overriding selected pixel format to use uyvy422 instead. Option framerate not found. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
