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• lavc/vvc_mc : R-V V dmvr

  15 décembre 2024, par sunyuechi

  lavc/vvc_mc : R-V V dmvr
                                       k230               banana_f3
  
  dmvr_8_12x20_c :                       619.3 ( 1.00x)    624.1 ( 1.00x)
  
  dmvr_8_12x20_rvv_i32 :                 128.6 ( 4.82x)    103.4 ( 6.04x)
  
  dmvr_8_20x12_c :                       610.0 ( 1.00x)    665.6 ( 1.00x)
  
  dmvr_8_20x12_rvv_i32 :                 137.6 ( 4.44x)    92.9 ( 7.17x)
  
  dmvr_8_20x20_c :                      1008.0 ( 1.00x)    1082.7 ( 1.00x)
  
  dmvr_8_20x20_rvv_i32 :                 221.1 ( 4.56x)    155.4 ( 6.97x)
  
  dmvr_h_8_12x20_c :                    2008.0 ( 1.00x)    2009.7 ( 1.00x)
  
  dmvr_h_8_12x20_rvv_i32 :               239.6 ( 8.38x)    186.7 (10.77x)
  
  dmvr_h_8_20x12_c :                    1989.5 ( 1.00x)    2009.4 ( 1.00x)
  
  dmvr_h_8_20x12_rvv_i32 :               230.3 ( 8.64x)    155.4 (12.93x)
  
  dmvr_h_8_20x20_c :                    3304.1 ( 1.00x)    3342.9 ( 1.00x)
  
  dmvr_h_8_20x20_rvv_i32 :               378.3 ( 8.73x)    248.9 (13.43x)
  
  dmvr_hv_8_12x20_c :                   3609.8 ( 1.00x)    3603.4 ( 1.00x)
  
  dmvr_hv_8_12x20_rvv_i32 :              369.1 ( 9.78x)    322.1 (11.19x)
  
  dmvr_hv_8_20x12_c :                   3628.3 ( 1.00x)    3624.2 ( 1.00x)
  
  dmvr_hv_8_20x12_rvv_i32 :              322.8 (11.24x)    238.7 (15.19x)
  
  dmvr_hv_8_20x20_c :                   5933.8 ( 1.00x)    5936.6 ( 1.00x)
  
  dmvr_hv_8_20x20_rvv_i32 :              526.5 (11.27x)    374.1 (15.87x)
  
  dmvr_v_8_12x20_c :                    2156.3 ( 1.00x)    2155.4 ( 1.00x)
  
  dmvr_v_8_12x20_rvv_i32 :               239.6 ( 9.00x)    176.2 (12.24x)
  
  dmvr_v_8_20x12_c :                    2137.6 ( 1.00x)    2165.9 ( 1.00x)
  
  dmvr_v_8_20x12_rvv_i32 :               230.3 ( 9.28x)    155.2 (13.96x)
  
  dmvr_v_8_20x20_c :                    4183.8 ( 1.00x)    3592.9 ( 1.00x)
  
  dmvr_v_8_20x20_rvv_i32 :               369.3 (11.33x)    249.2 (14.42x)
  

  • [DH] libavcodec/riscv/vvc/vvc_mc_rvv.S
  • [DH] libavcodec/riscv/vvc/vvcdsp_init.c

• Download RTSP recording content between two dates and times, or from start seconds to end seconds

  23 septembre 2022, par holt2

  I need to download from an RTSP link the content recorded on an IP camera from a start and end date and time. It would also be valid to be able to download it from X seconds of start of the recording to seconds of end.

  


  With this ffmpeg command I download the recording content from the RTSP link only from the beginning of the recording content, with the duration in seconds passed by the -t parameter :

  


  ffmpeg -rtsp_transport tcp -i  -r 30 -t <seconds> -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 /path/to/video/filename.mp4&#xA;</seconds>

  


  I tried to download with ffmpeg the content using temporary media fragment URIs (https://www.w3.org/2008/WebVideo/Fragments/wiki/UA_Server_RTSP_Communication#.281.29_Temporal_Media_Fragment_URIs) but it doesn't do it correctly :

  


  ffmpeg -rtsp_transport tcp -i #t=10,20 -r 30 -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 -ss 19:09:13 -t 5 /path/to/video/filename.mp4


  


  I have also tried with ffmpeg to use the -ss parameter to try to extract the recording from a specific hour, minute and second (https://trac.ffmpeg.org/wiki/Seeking) but when running it gets stuck, it does not advance :

  


  ffmpeg -rtsp_transport tcp -i  -r 30 -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 -ss 19:09:13 -t <seconds> /path/to/video/filename.mp4&#xA;</seconds>

  


  In case it's helpful, to get the RTSP link, I'm using the ONVIF protocol with a NodeJS library (https://github.com/agsh/onvif). I have also reviewed the ONVIF documentation available but have not found a way to download recorded content between start and end dates and times.

  


  Do you know how to download from an RTSP link the content recorded on an IP camera from a start date and time and end date, or download it from X seconds of recording start to seconds of end ?

  


  I am also open to use other tools or commands that can do this.

  


• avformat/mxfenc : fix DNxHD GC element_type

  14 décembre 2021, par Nicolas Gaullier

  avformat/mxfenc : fix DNxHD GC element_type
  The values for the essence element type were updated in the spec
  
  from 0x05/0x06 (ST2019-4 2008) to 0x0C/0x0D (ST2019-4 2009).
  Fixes ticket #6380.
  Thanks-to : Philip de Nier <philip.denier@bbc.co.uk>
  
  Thanks-to : Matthieu Bouron <matthieu.bouron@gmail.com>
  Reviewed-by : Matthieu Bouron <matthieu.bouron@gmail.com>
  
  Reviewed-by : Tomas Härdin <tjoppen@acc.umu.se>
  Signed-off-by : Nicolas Gaullier <nicolas.gaullier@cji.paris>
  
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mxfenc.c
  • [DH] tests/ref/lavf/mxf_opatom