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• 3 hidden Piwik features you likely don’t know, that will make you more productive

  17 janvier 2017, par InnoCraft — Community

  At Piwik and at InnoCraft, we always aim to make features as intuitive as possible. Having thousands of features in Piwik and having to find a balance between beginners and advanced users can sometimes be a challenge. Sometimes this even leads to building hidden features that are mainly targeted for power users. The list below shows three of them, did you know any of them yet ?

  BTW : If you don’t have Piwik yet, you can try them on our Piwik Demo.

  1. Search

  When you press the letter “f”, it will activate the search bar in the top left. Once you start typing something, it will show matching reports. Say you want to view reports about “devices” but don’t remember exactly which category it is in, simply start typing “devices” and the matching entry will show up without even having to move the mouse.

  The search bar also searches for matching websites and segments. Use the arrow up and down keys to select the entry you want and press enter to confirm the selection.

  Say you don’t remember the name of a report but you know it is listed under the category “Visitor”, then start typing the name of the category and it will show all related reports.

  2. Zen Mode

  When you press the letter “z”, it will activate the Zen Mode which lets you focus on the reports and content by removing the header and left menu. To disable the Zen Mode, simply press “z” again.

  This is especially useful in combination with the search bar mentioned above, as it enables you to quickly switch between reports, websites and segments even while menu and header are hidden.

  3. Faster period change

  Changing the displayed period is a task you likely perform quite often when analyzing reports. Usually, you would first select the period and then press the button “Apply” in the date selector. Instead, you can simply double click the name of the period and it will immediately load the selected period without having to click on the “Apply” button.

  What are your hidden features in Piwik ?

  Let us know by getting in touch with us or share it with us on Facebook or Twitter.

• avutil : add hwcontext_amf.

  15 octobre 2024, par Dmitrii Ovchinnikov

  avutil : add hwcontext_amf.
  Adds  hwcontext_amf, enabling a shared AMF context for encoders,
  
  decoders, and AMF-based filters, without copy to the host memory.
  
  Code also was tested in HandBrake.
  Benefits :
  
   - Optimizations for direct video memory access from CPU
  
   - Significant performance boost in full AMF pipelines with filters
  
   - Integration of GPU filters like VPP, Super Resolution, and
  
      Compression Artefact Removal(in future plans)
  
   - VCN power management control for decoders.
  
   - Ability to specify which VCN instance to use for decoding
  
     (like for encoder)
  
   - AMD will soon introduce full AMF API for multimedia accelerator MA35D
  
     - With AMF API, integration will be much easier :
  
        GPU and the accelerator will have the same API
  
     - including encoder, decoder, scaler, color converter,
  
        Windows and Linux.
  
     Learn more :
  
        https://www.amd.com/en/products/accelerators/alveo/ma35d.html
  Changes by versions :
  
  v2 : Header file cleanup.
  
  v3 : Removed an unnecessary class.
  
  v4 : code cleanup and improved error handling
  
  v5 : Fixes related to HandBrake integration.
  
  v6 : Sequential filters error and memory leak have been fixed.
  

  • [DH] libavutil/Makefile
  • [DH] libavutil/hwcontext.c
  • [DH] libavutil/hwcontext.h
  • [DH] libavutil/hwcontext_amf.c
  • [DH] libavutil/hwcontext_amf.h
  • [DH] libavutil/hwcontext_amf_internal.h
  • [DH] libavutil/hwcontext_internal.h
  • [DH] libavutil/pixdesc.c
  • [DH] libavutil/pixfmt.h

• FFMPEG - Codec Copy transcoded audio from first output transport stream to other transport streams

  27 mars 2019, par Software Development Consultan

  I am currently trying to generate 3 output Transport streams from single input stream, for this I need to do Video encoding for each output as I wanted to have different bitrate for each stream. But for audio stream I have same audio bitrate and same params for all 3 output Transport stream.
  So I want to somehow transcode audio only first time (in first stream, let say from AC3 to AAC) and then just want to copy output transcoded audio from first output (aac) to other 2 outputs. so that will save processing power.

  I have setup overall command for this, but for audio copy I am not able to set so that I can get output audio from first Transport stream output

  Please refer following command :

  ffmpeg -loglevel 40 -analyzeduration 10M -probesize 10M -thread_queue_size 1024 -c:v h264_cuvid -gpu 2 -i "udp ://@239.1.1.111:1234 ?fifo_size=1000000&buffer_size=100000&overrun_nonfatal=1" -filter_complex "[0:v]split=3[cl1][cl2][temp1] ;[temp1]scale=-1:480[cl3]" -map [cl1] -map 0:a:0 -c:v h264_nvenc -gpu 2 -preset hq -strict experimental -b:v 4500k -bufsize 5000k -bf 3 -profile:v high -level 4 -coder 1 -sc_threshold 0 -minrate 4500k -maxrate 4500k -g 15 -acodec libfdk_aac -b:a 192k -ar 48000 -ac 2 -flush_packets 0 -f mpegts -mpegts_flags +resend_headers+pat_pmt_at_frames -metadata service_provider=Test_OP1 -metadata service_name=MyService1 -max_muxing_queue_size 1024 -pcr_period 20 -y "udp ://239.1.1.222:1111 ?pkt_size=1316&reuse=1&buffer_size=1000&fifo_size=1000000&burst_bits=50000" -map [cl2] -map 0:a:0 -c:v h264_nvenc -gpu 2 -preset hq -strict experimental -b:v 3500k -bufsize 4000k -bf 3 -profile:v high -level 4 -coder 1 -sc_threshold 0 -minrate 3500k -maxrate 3500k -g 15 -acodec copy -flush_packets 0 -f mpegts -mpegts_flags +resend_headers+pat_pmt_at_frames -metadata service_provider=Test_OP2 -metadata service_name=MyService2 -max_muxing_queue_size 1024 -pcr_period 20 -y "udp ://239.1.1.222:2222 ?pkt_size=1316&reuse=1&buffer_size=1000&fifo_size=1000000&burst_bits=50000" -map [cl3] -map 0:a:0 -c:v h264_nvenc -gpu 2 -preset hq -strict experimental -b:v 2500k -bufsize 3000k -bf 3 -profile:v high -level 4 -minrate 2500k -maxrate 2500k -g 15 -coder 1 -sc_threshold 0 -acodec copy -flush_packets 0 -f mpegts -mpegts_flags +resend_headers+pat_pmt_at_frames -metadata service_provider=Test_OP3 -metadata service_name=MyService3 -max_muxing_queue_size 1024 -pcr_period 20 -y "udp ://239.1.1.222:3333 ?pkt_size=1316&reuse=1&buffer_size=1000&fifo_size=1000000&burst_bits=50000"

  I want to have output stream "239.1.1.222:2222" and "239.1.1.222:3333" should have copied audio stream (AAC) from first output stream "239.1.1.222:1111" and Not from main input stream "239.1.1.111:1234"