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• cpu.c:253 : x264_cpu_detect : Assertion

  12 octobre 2017, par user6341251

  environment :
  ubuntu 16.04_x64 server
  install ffmpeg through apt-get install
  python 3
  

  when I try

  from moviepy.editor import *
clip = VideoFileClip("/root/video.mp4")
clip.ipython_display(width=280)

  Traceback (most recent call last) :
  File "", line 1, in
  File "/usr/local/lib/python2.7/dist-packages/moviepy/video/io/html_tools.py", line 219, in ipython_display
  center=center, rd_kwargs=rd_kwargs, **html_kwargs))
  File "/usr/local/lib/python2.7/dist-packages/moviepy/video/io/html_tools.py", line 97, in html_embed
  clip.write_videofile(**kwargs)
  File "", line 2, in write_videofile
  File "/usr/local/lib/python2.7/dist-packages/moviepy/decorators.py", line 54, in requires_duration
  return f(clip, *a, **k)
  File "", line 2, in write_videofile
  File "/usr/local/lib/python2.7/dist-packages/moviepy/decorators.py", line 137, in use_clip_fps_by_default
  return f(clip, *new_a, **new_kw)
  File "", line 2, in write_videofile
  File "/usr/local/lib/python2.7/dist-packages/moviepy/decorators.py", line 22, in convert_masks_to_RGB
  return f(clip, *a, **k)
  File "/usr/local/lib/python2.7/dist-packages/moviepy/video/VideoClip.py", line 349, in write_videofile
  progress_bar=progress_bar)
  File "/usr/local/lib/python2.7/dist-packages/moviepy/video/io/ffmpeg_writer.py", line 216, in ffmpeg_write_video
  writer.write_frame(frame)
  File "/usr/local/lib/python2.7/dist-packages/moviepy/video/io/ffmpeg_writer.py", line 178, in write_frame
  raise IOError(error)
  IOError : [Errno 32] Broken pipe

  MoviePy error : FFMPEG encountered the following error while writing file temp.mp4 :

  ffmpeg : common/cpu.c:253 : x264_cpu_detect : Assertion ` !(cpu&(0x0000040|0x0000080))’ failed.

  what happend ?

  ---

  @Ronald S. Bultje
  

  I am using a virtual machine

  processor : 0
  vendor_id : GenuineIntel
  cpu family : 6
  model : 13
  model name : QEMU Virtual CPU version (cpu64-rhel6)
  stepping : 3
  microcode : 0x1
  cpu MHz : 3504.000
  cache size : 4096 KB
  physical id : 0
  siblings : 1
  core id : 0
  cpu cores : 1
  apicid : 0
  initial apicid : 0
  fpu : yes
  fpu_exception : yes
  cpuid level : 13
  wp : yes
  flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 smep bmi2 xsaveopt
  bugs :
  bogomips : 7008.00
  clflush size : 64
  cache_alignment : 64
  address sizes : 39 bits physical, 48 bits virtual
  power management :
  

• 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