ffmpeg will not take a snapshot from it though. Branched into separate issue from 344 When V4L2 device used as netcam ffmpeg is using the default pixel format, usually YUYV. The format option may be needed for raw input files. To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input.m2v -r 24 output.avi. if i open the url with mpv, i get a live view of my feed. To force the frame rate of the output file to 24 fps: ffmpeg -i input.avi -r 24 output.avi. Not Find Codec Parameters For Stream 0 (Video: Hevc, None): Unspecified Size. Error applying options to the filter.Īnybody got an idea what is causing this problem? the rtsp url and credentials are correct. is a single +, ffmpeg selects the same pixel format as the input (or. Error setting option video_size to value 0x0. However whitespace is not among the allowed. Now, RFC 2326 actually does not state that characters can or should be URI-escaped in a session id, only that linear whitespace should be. Unable to parse option value "-1" as pixel format GStreamer got a bug report a while back where christian mentioned that ffmpeg hangs when RTSP session ids in gst-rtsp-server contain or +. Unable to parse option value "0x0" as image size
Could not find codec parameters for stream 0 (Video: h264, none): unspecified sizeĬonsider increasing the value for the 'analyzeduration' and 'probesize' options
missing picture in access unit with size 19 Pages in category 'FFmpeg Pixel Formats' The following 6 pages are in this category, out of 6 total. One rtsp stream can be handled, however, the other one gives this output ffmpeg version 3.2.10-1~deb9u1+rpt1 Copyright (c) 2000-2018 the FFmpeg developersīuilt with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1) 20170516Ĭonfiguration: -prefix=/usr -extra-version='1~deb9u1+rpt1' -toolchain=hardened -libdir=/usr/lib/arm-linux-gnueabihf -incdir=/usr/include/arm-linux-gnueabihf -enable-gpl -disable-stripping -enable-avresample -enable-avisynth -enable-gnutls -enable-ladspa -enable-libass -enable-libbluray -enable-libbs2b -enable-libcaca -enable-libcdio -enable-libebur128 -enable-libflite -enable-libfontconfig -enable-libfreetype -enable-libfribidi -enable-libgme -enable-libgsm -enable-libmp3lame -enable-libopenjpeg -enable-libopenmpt -enable-libopus -enable-libpulse -enable-librubberband -enable-libshine -enable-libsnappy -enable-libsoxr -enable-libspeex -enable-libssh -enable-libtheora -enable-libtwolame -enable-libvorbis -enable-libvpx -enable-libwavpack -enable-libwebp -enable-libx265 -enable-libxvid -enable-libzmq -enable-libzvbi -enable-omx-rpi -enable-mmal -enable-openal -enable-opengl -enable-sdl2 -enable-libdc1394 -enable-libiec61883 -enable-chromaprint -enable-frei0r -enable-libopencv -enable-libx264 -enable-shared List of all pixel formats used by ffmpeg. this command works for one of them: ffmpeg -y -i "rtsp://ip:554/user=user_password=password_channel=1_stream=1.sdp?real_stream" -f image2 /tmp/snap.jpg documentation split into per-component manuals. ffmpeg reads from an arbitrary number of input files (which can be regular files, pipes, network streams, grabbing devices, etc. Resolution & pixel format change support with multithreading for H.264. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter. So I am concluding that the pixel format 'YU12' is not compatible with openCV while format 'UYVY' is.I am using ffmpeg to get a single image from two rtsp streams. DESCRIPTION ffmpeg is a very fast video and audio converter that can also grab from a live audio/video source. dont use AVPIXFMTMONOBLACK for apng - avcodec/wavpack: Check L/R values before use to avoid harmless integer overflow and undefined behavior in fate. Nonfunctional output Format Video Output: When I run v4l2-ctl -d /dev/video0 -all on both working and non working variants this is what I get: The issue comes when I try to use an rtsp feed, the following command works to send the feed to my loopback device: ffmpeg -rtsp_transport tcp -i -acodec rawvideo -vcodec rawvideo -f v4l2 /dev/video0Īnd I am able to view that feed with VLC (on /dev/video0) no problem, however when I feed it to my openCV app, I get the following error: VIDEOIO ERROR: V4L2: Pixel format of incoming image is unsupported by OpenCV Use the format filter or the -pixfmt option. I am working on an openCV project, I have a stable running variant that is taking input from an HDMI capture card and using FFmpeg to output to a v4L2 loopback device (/dev/video0) my openCV project takes its input from /dev/video0.
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