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Sur d’autres sites (6067)

  • audio and video out of sync streaming usb webcam to RTMP server

    2 avril 2021, par Mateus Garcia

    I'm trying to stream 4 webcams connected to my raspberry pi 4 to a nginx RTMP server (same network) using ffmpeg.

    


    this works well for the very first moments, but after some time the video is ahead of audio, and after some more time, they are totally out of sync.

    


    this is the command that i am running :

    


    ffmpeg -r 15 -s 384x288 -f video4linux2 -i /dev/video0 \
-f alsa -thread_queue_size 1024 -ac 1 -i hw:1 \
-f flv rtmp://192.168.0.100/live/cam1


    


    rtmp server is a docker image : tiangolo/nginx-rtmp

    


    client is VLC media player.

    


    Please help me. i dont know what more i can do.

    


    command output :

    


    [video4linux2,v4l2 @ 0x1a932b0] The V4L2 driver changed the video from 384x288 to 352x288
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 6196.784888, bitrate: 24330 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 352x288, 24330 kb/s, 15 fps, 15 tbr, 1000k tbn, 1000k tbc
Guessed Channel Layout for Input Stream #1.0 : mono
Input #1, alsa, from 'hw:1':
  Duration: N/A, start: 1617338591.667887, bitrate: 768 kb/s
    Stream #1:0: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> flv1 (flv))
  Stream #1:0 -> #0:1 (pcm_s16le (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, flv, to 'rtmp://192.168.0.100/live/cam1':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p(progressive), 352x288, q=2-31, 200 kb/s, 15 fps, 1k tbn, 15 tbc
    Metadata:
      encoder         : Lavc58.35.100 flv
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 48000 Hz, mono, s16p
    Metadata:
      encoder         : Lavc58.35.100 libmp3lame
frame=  639 fps= 15 q=2.0 size=    1513kB time=00:00:42.57 bitrate= 291.1kbits/s speed=0.993x    



    


  • Why does ffmpeg hang when I try to use my webcam's raw stream ?

    25 septembre 2021, par Sam Middleton

    I'm trying to use ffmpeg to record videos from a webcam.

    


    When I run ffmpeg -f v4l2 -list_formats all -i /dev/video0 I get the following output :

    


    ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-liblensfun --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[video4linux2,v4l2 @ 0x55f3fbd816c0] Compressed:       mjpeg :          Motion-JPEG : 1920x1080
[video4linux2,v4l2 @ 0x55f3fbd816c0] Raw       :     yuyv422 :           YUYV 4:2:2 : 1920x1080
/dev/video0: Immediate exit requested


    


    I can record by using the command ffmpeg -f v4l2 -input_format mjpeg -i /dev/video0 -t 30 output.mp4

    


    But if I specify -input_format yuyv442 instead, ffmpeg outputs the following and hangs :

    


    ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-liblensfun --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100


    


    If I press Ctl-C, it then prints the following :

    


    Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: 995328 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 995328 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Finishing stream 0:0 without any data written to it.
[libx264 @ 0x55eda0567640] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55eda0567640] profile High 4:2:2, level 4.0, 4:2:2 8-bit
[libx264 @ 0x55eda0567640] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 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=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output.mp4':
  Metadata:
    encoder         : Lavf58.29.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv422p, 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc
    Metadata:
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Exiting normally, received signal 2.


    


    Also, if output.mp4 already exists, I get the Overwrite ? [y/N] prompt after I Ctl-C.

    


    Does anyone know what is causing this and how I can fix it ?

    


  • FFMPEG Streaming webcam on Windows 10 to RTP

    23 juillet 2019, par gdogg371

    I am still trying to figure out exactly what I am doing with ffmpeg and dshow. However I am trying to stream a 4k capture device I have, so that I can use this as an IPTV server downstream.

    So far I have :

    ffmpeg -rtbufsize 2100M -y -loglevel warning -f dshow -i video="Video (00 Pro Capture HDMI 4K+)" -s 3840x2160 -vcodec v410 -f rtp rtp://192.168.1.31:8554

    ...however this is throwing up the following errors :

    C:\Program Files\VideoLAN\VLC>ffmpeg -rtbufsize 2100M -y -loglevel warning -f dshow -i video="Video (00 Pro Capture HDMI 4K+)" -s 3840x2160 -vcodec libx265 -f rtp rtp://192.168.1.31:8554
    
[udp @ 000002c207a7d080] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
    
[udp @ 000002c207a8d380] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
    
x265 [info]: HEVC encoder version 3.1b36c03e4e771
    
x265 [info]: build info [Windows][GCC 9.1.1][64 bit] 8bit+10bit
    
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
x265 [info]: Main 4:2:2 10 profile, Level-5.1 (Main tier)
    
x265 [info]: Thread pool created using 8 threads
    
x265 [info]: Slices                              : 1
    
x265 [info]: frame threads / pool features       : 3 / wpp(34 rows)
    
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
    
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
    
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 3
    
x265 [info]: Keyframe min / max / scenecut / bias: 25 / 250 / 40 / 5.00
    
x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
    
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
    
x265 [info]: References / ref-limit  cu / depth  : 3 / off / on
    
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 2 / 1.0 / 32 / 1
    
x265 [info]: Rate Control / qCompress            : CRF-28.0 / 0.60
    
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip signhide tmvp b-intra
    
x265 [info]: tools: strong-intra-smoothing lslices=8 deblock sao
    
SDP:
    
v=0
    
o=- 0 0 IN IP4 127.0.0.1
    
s=No Name
    
c=IN IP4 192.168.1.31
    
t=0 0
    
a=tool:libavformat 58.28.100
    
m=video 8554 RTP/AVP 96
    
a=rtpmap:96 H265/90000
    

    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (62% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (64% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (67% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
...
    
...
    
...
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (99% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
    Last message repeated 1 times
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (100% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
    Last message repeated 149 times
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (99% of size: 2100000000 [rtbufsize parameter])! frame dropped!
    
[dshow @ 000002c207a69f80] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (100% of size: 2100000000 [rtbufsize parameter])! frame dropped!

    I am unsure why this occurring, as the buffer size is pretty much at the maximum permitted by dshow.

    Can anyone suggest a remedy ?

    Thanks

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