> On Feb 9, 2023, at 8:09 AM, Anatoly <[email protected]> wrote: > > Hello, > On Wed, 8 Feb 2023 16:11:39 -0800 > Steven Kan <[email protected]> wrote: > >>> On Feb 7, 2023, at 10:56 PM, Ferdi Scholten <[email protected]> >>> wrote: >>> >>> I have a Windows PC running Blue Iris security camera software, and >>> it has a "Direct-to-disc" option whereby it records video straight >>> from each camera's h.264 RTSP stream without transcoding, to reduce >>> CPU and HDD utilization. There is some re-packaging involved, and I >>> think that's where the problem may lie. > But are you sure that there is re-packaging? > What if capture camera stream with ffmpeg itself? > ...snip...
Good question. “Repackaging” may be the wrong word, but BI must do something to take an RTSP stream and turn it into a file on a disk. There is no transcoding occurring with BI’s “direct-to-disc” feature, because the reason for that feature is to reduce CPU utilization, and Task Manager on the BI computer shows that it’s very, very low. But BI must at last write some sort of file name, file header, EOF marker, etc., right? I tried ffprobe with the streams directly from these same 3 camera that produced the clips posted previously, and they all show no errors: Amcrest camera: ./ffprobe -i 'rtsp://anonymous:[email protected]:554' ffprobe version N-109776-g7e1d474021-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2007-2023 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay libavutil 57. 44.100 / 57. 44.100 libavcodec 59. 63.100 / 59. 63.100 libavformat 59. 38.100 / 59. 38.100 libavdevice 59. 8.101 / 59. 8.101 libavfilter 8. 56.100 / 8. 56.100 libswscale 6. 8.112 / 6. 8.112 libswresample 4. 9.100 / 4. 9.100 libpostproc 56. 7.100 / 56. 7.100 Input #0, rtsp, from 'rtsp://anonymous:[email protected]:554': Metadata: title : Media Server Duration: N/A, start: 0.100000, bitrate: N/A Stream #0:0: Video: h264 (Main), yuv420p(progressive), 2048x1536, 100 tbr, 90k tbn Reolink camera: ./ffprobe -i 'rtsp://anonymous:[email protected]:554' ffprobe version N-109776-g7e1d474021-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2007-2023 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay libavutil 57. 44.100 / 57. 44.100 libavcodec 59. 63.100 / 59. 63.100 libavformat 59. 38.100 / 59. 38.100 libavdevice 59. 8.101 / 59. 8.101 libavfilter 8. 56.100 / 8. 56.100 libswscale 6. 8.112 / 6. 8.112 libswresample 4. 9.100 / 4. 9.100 libpostproc 56. 7.100 / 56. 7.100 Input #0, rtsp, from 'rtsp://admin:[email protected]:554': Metadata: title : Session streamed by "preview" comment : Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: h264 (High), yuv420p(progressive), 2304x1296, 29.97 tbr, 90k tbn Stream #0:1: Audio: aac (LC), 16000 Hz, mono, fltp Wyze cam with RTSP firmware: ./ffprobe -i rtsp://anonymous:[email protected]:554/live ffprobe version N-109776-g7e1d474021-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2007-2023 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay libavutil 57. 44.100 / 57. 44.100 libavcodec 59. 63.100 / 59. 63.100 libavformat 59. 38.100 / 59. 38.100 libavdevice 59. 8.101 / 59. 8.101 libavfilter 8. 56.100 / 8. 56.100 libswscale 6. 8.112 / 6. 8.112 libswresample 4. 9.100 / 4. 9.100 libpostproc 56. 7.100 / 56. 7.100 Input #0, rtsp, from 'rtsp://anonymous:[email protected]:554/live': Metadata: title : Session streamed by the WYZE Media Server comment : live Duration: N/A, start: 0.000438, bitrate: N/A Stream #0:0: Video: h264 (Main), yuv420p(tv, bt709, progressive), 1920x1080, 20 fps, 40 tbr, 90k tbn Stream #0:1: Audio: pcm_alaw, 16000 Hz, mono, s16, 128 kb/s _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
