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• Error while adding RTSP stream to Ant media server

  28 juillet 2021, par Jacob

  I have successfully remotely viewed the stream using ffplay -rtsp_transport tcp rtsp ://streamurl.

  


      ffplay version 4.4 Copyright (c) 2003-2021 the FFmpeg developers
  built with Apple clang version 12.0.5 (clang-1205.0.22.9)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, rtsp, from 'rtsp://admin:lyne1234@74.65.209.152:554/11/stream1':
  Metadata:
    title           : 10
  Duration: N/A, start: 0.050000, bitrate: N/A
  Stream #0:0: Video: hevc (Main), yuvj420p(pc, bt709), 1920x1080, 20 fps, 20 tbr, 90k tbn, 20 tbc
[swscaler @ 0x160330000] deprecated pixel format used, make sure you did set range correctly
   5.69 M-V:  0.014 fd=   0 aq=    0KB vq=   97KB sq=    0B f=0/0   


  


  However, when playing the stream the a VCL player or trying to add the stream to my AWS instance of Ant media server. The stream does not go through. On ant media server there is no errors the stream connects but its just a black screen. On the VCL player I am getting the error :

  


  VLC is unable to open the MRL 'rtsp://{streamurl}'


  


  I currently have an identical camera setup the exact same way working fine. The only difference is there on different LAN's with different ISP's.

  


• Failed setup for format dxva2_vld : hwaccel initialisation returned error

  13 juin 2023, par james

  My program is a video player based on ffmpeg implementation, enabling d3d11va and dxva2 hardware acceleration to decode video frames, play most of the video is normal, only a small part of the video will report this error, ffmpeg printed log as follows :
I:2023-06-13 15:34:53 ms:887:No decoder device for codec found
I:2023-06-13 15:34:53 ms:887:Failed setup for format dxva2_vld : hwaccel initialisation returned error.
I:2023-06-13 15:34:53 ms:888:Format dxva2_vld not usable, retrying get_format() without it.
I:2023-06-13 15:34:53 ms:888:decode_slice_header error
I:2023-06-13 15:34:53 ms:888:no frame !

  


  If ffplay is used and d3d11va and dxva2 hardware acceleration is not enabled, the video can be played normally, and the printed video information is as follows :
PS D :\msys64\home\wangj\ffmpeg-4.4.1\buildout\bin> .\ffplay.exe -i D :\Desktop\13132023061300012_1_C1_34.mp4
ffplay version 4.4.1 Copyright (c) 2003-2021 the FFmpeg developers
configuration : —prefix=./buildout —arch=x86 —toolchain=msvc —enable-shared —disable-debug —enable-sdl2 —enable-dxva2 —enable-d3d11va
libavutil 56. 70.100 / 56. 70.100
libavcodec 58.134.100 / 58.134.100
libavformat 58. 76.100 / 58. 76.100
libavdevice 58. 13.100 / 58. 13.100
libavfilter 7.110.100 / 7.110.100
libswscale 5. 9.100 / 5. 9.100
libswresample 3. 9.100 / 3. 9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D :\Desktop\13132023061300012_1_C1_34.mp4' :
Metadata :
major_brand : isom
minor_version : 512
compatible_brands : isomiso2avc1mp41
encoder : Lavf56.38.102
Duration : 00:00:44.00, start : 0.000000, bitrate : 1706 kb/s
Stream #0:0(und) : Video : h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 1705 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata :
handler_name : VideoHandler
vendor_id : [0][0][0][0]

  


  Is this pixel format not supported by d3d11va and dxva2 ? What can I do to get ffplay to play this video file with hardware acceleration ?

  


  When d3d11va and dxva2 hardware acceleration is enabled, most of the videos that can be played also have yuv420p pixel format, why can't this video be played？

  


• FFMPEG Optional Entries in -var_stream_map

  16 juillet 2022, par Baa

  I have a script that records an x11 display and outputs three HLS streams.

  



  ./ffmpeg -y \
    -f x11grab -framerate 60 -s 1920x1080 -i :1.0 \
    -c:v:0 libx264 -c:s:0 copy -c:a:0 aac -b:v:0 4000k -b:a:0 512k -s:v:0 1920x1080 -r:0 30 -g:0 90 -preset:0 superfast -tune:0 zerolatency -level:v:0 4 -f flv \
    -c:v:1 libx264 -c:s:1 copy -c:a:1 aac -b:v:1 2500k -b:a:1 256k -s:v:1 1280x720 -r:1 30 -g:1 90 -preset:1 superfast -tune:1 zerolatency -level:v:1 4 -f flv \
    -c:v:2 libx264 -c:s:2 copy -c:a:2 aac -b:v:2 800k -b:a:2 256k -s:v:2 960x540 -r:2 30 -g:2 90 -preset:2 superfast -tune:2 zerolatency -level:v:2 4 -f flv \
    -hls_time 6 \
    -hls_list_size 2 \
    -hls_flags delete_segments \
    -map 0:v -map 0:a? -map 0:s? -map 0:v -map 0:a? -map 0:s? -map 0:v -map 0:a? -map 0:s? \
    -var_stream_map "v:0,a:0 v:1,a:1 v:2,a:2" \
    -f hls -master_pl_name "${name}.m3u8" \
    -hls_segment_filename "/tmp/hls/${name}_%v-%d.ts" \
    -max_muxing_queue_size 1024 \
    "/tmp/hls/${name}_%v.m3u8"


  



  This line :

  



  -map 0:v -map 0:a? -map 0:s? -map 0:v -map 0:a? -map 0:s? -map 0:v -map 0:a? -map 0:s? \


  



  Has question marks after each 0:a, this is because the input does not always have audio, so it ignores the error when there is no audio present, and maps it when there is.

  



  However, the following switch :

  



  -var_stream_map "v:0,a:0 v:1,a:1 v:2,a:2" \


  



  Will only work if there is audio present, is there a way I can have -var_stream_map with entries that will ignore errors like -map does ?

  



  Here are the errors if I try to use this current script with no audio :

  



  [hls @ 0x6231800] Unable to map stream at a:0
[hls @ 0x6231800] Variant stream info update failed with status ffffffea
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:2 --


  



  If it's relevant, here is the entire output :

  



  ffmpeg version 4.0.3-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100
[x11grab @ 0x6229300] 16 bits per pixel screen is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[x11grab @ 0x6229300] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':1.0':
  Duration: N/A, start: 1546439595.240575, bitrate: N/A
    Stream #0:0: Video: rawvideo (RGB[16] / 0x10424752), rgb565le, 1920x1080, 60 fps, 1000k tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  Stream #0:0 -> #0:1 (rawvideo (native) -> h264 (libx264))
  Stream #0:0 -> #0:2 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x62334c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x62334c0] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit
[libx264 @ 0x62334c0] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x1 me=dia subme=1 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=90 keyint_min=9 scenecut=40 intra_refresh=0 rc=abr mbtree=0 bitrate=4000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libx264 @ 0x6234840] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x6234840] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit
[libx264 @ 0x6234840] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x1 me=dia subme=1 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=90 keyint_min=9 scenecut=40 intra_refresh=0 rc=abr mbtree=0 bitrate=2500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libx264 @ 0x6235740] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x6235740] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit
[libx264 @ 0x6235740] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x1 me=dia subme=1 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=4 lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=90 keyint_min=9 scenecut=40 intra_refresh=0 rc=abr mbtree=0 bitrate=800 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[hls @ 0x6231800] Unable to map stream at a:0
[hls @ 0x6231800] Variant stream info update failed with status ffffffea
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:2 -- 
[libx264 @ 0x62334c0] frame I:1     Avg QP:31.45  size: 91065
[libx264 @ 0x62334c0] mb I  I16..4: 56.4%  0.0% 43.6%
[libx264 @ 0x62334c0] final ratefactor: 36.79
[libx264 @ 0x62334c0] coded y,u,v intra: 42.4% 8.7% 11.4%
[libx264 @ 0x62334c0] i16 v,h,dc,p: 53% 32% 11%  5%
[libx264 @ 0x62334c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 20% 14%  8%  6%  6%  6%  5%  6%
[libx264 @ 0x62334c0] kb/s:21855.60
[libx264 @ 0x6234840] frame I:1     Avg QP:30.27  size: 62907
[libx264 @ 0x6234840] mb I  I16..4: 48.6%  0.0% 51.4%
[libx264 @ 0x6234840] final ratefactor: 35.22
[libx264 @ 0x6234840] coded y,u,v intra: 53.9% 14.2% 17.2%
[libx264 @ 0x6234840] i16 v,h,dc,p: 49% 36% 11%  5%
[libx264 @ 0x6234840] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 19% 15%  8%  7%  6%  6%  6%  6%
[libx264 @ 0x6234840] kb/s:15097.68
[libx264 @ 0x6235740] final ratefactor: 29.77
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