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• lavc/hevcdec : Put slice address checking after hwaccel decode slice

  24 juin 2024, par Fei Wang

  lavc/hevcdec : Put slice address checking after hwaccel decode slice
  Slice address tab only been updated in software decode slice data.
  Fixes hwaccel decoding after d725c737fe2a19091b481d4d115fd939e0a674b2.
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  

  • [DH] libavcodec/hevc/hevcdec.c

• lavc/vaapi_encode_h264 : add "coder" option support

  8 août 2017, par Jun Zhao

  lavc/vaapi_encode_h264 : add "coder" option support
  Follow libx264 style to support "coder" option, and set it to
  
  cabac by default.
  Signed-off-by : Yi A Wang <yi.a.wang@intel.com>
  
  Signed-off-by : Jun Zhao <jun.zhao@intel.com>
  
  Reviewed-by : Steven Liu <lingjiujianke@gmail.com>
  
  Signed-off-by : Mark Thompson <sw@jkqxz.net>
  

  • [DH] libavcodec/vaapi_encode_h264.c

• Why does moviepy complain about bitrate while generating audiofile ?

  6 octobre 2023, par Roman

  I have just try to use moviepy library for the first time. Generation of movies from numpy arrays was really simple, intuitive and worked out of box. This is what I tried :

  



  from moviepy.editor import VideoClip
import numpy as np

def make_frame(t):

    val = int(255.0*(t/3.0))

    ls = []
    for height in range(100):
        row = []
        for width in range(300):
            row.append([val,0,0])
        ls.append(row)
    frame = np.array(ls)
    return frame

animation = VideoClip(make_frame, duration = 3)

animation.write_gif('first_try.gif', fps=24)
animation.write_videofile('first_try.mp4', fps=24)


  



  Then I wanted to use moviepy to generate sound. In theory it should work in a very similar way. Here is what I tried :

  



  from moviepy.editor import AudioClip
import numpy as np

make_frame = lambda t : 2*[ np.sin(404 * 2 * np.pi * t) ]
clip = AudioClip(make_frame, duration=5)

clip.write_audiofile('sound.mp4')


  



  However, I got an error message :

  



  [MoviePy] Writing audio in sound.mp4&#xA;|----------| 0/111   0% [elapsed: 00:00 left: ?, ? iters/sec]Traceback (most recent call last):&#xA;  File "sound.py", line 9, in <module>&#xA;    clip.write_audiofile(&#x27;sound.mp4&#x27;)&#xA;  File "<string>", line 2, in write_audiofile&#xA;  File "/usr/local/lib/python2.7/dist-packages/moviepy/decorators.py", line 54, in requires_duration&#xA;    return f(clip, *a, **k)&#xA;  File "/usr/local/lib/python2.7/dist-packages/moviepy/audio/AudioClip.py", line 204, in write_audiofile&#xA;    verbose=verbose, ffmpeg_params=ffmpeg_params)&#xA;  File "<string>", line 2, in ffmpeg_audiowrite&#xA;  File "/usr/local/lib/python2.7/dist-packages/moviepy/decorators.py", line 54, in requires_duration&#xA;    return f(clip, *a, **k)&#xA;  File "/usr/local/lib/python2.7/dist-packages/moviepy/audio/io/ffmpeg_audiowriter.py", line 162, in ffmpeg_audiowrite&#xA;    writer.write_frames(chunk)&#xA;  File "/usr/local/lib/python2.7/dist-packages/moviepy/audio/io/ffmpeg_audiowriter.py", line 122, in write_frames&#xA;    raise IOError(error)&#xA;IOError: [Errno 32] Broken pipe&#xA;&#xA;MoviePy error: FFMPEG encountered the following error while writing file sound.mp4:&#xA;&#xA;Invalid encoder type &#x27;libx264&#x27;&#xA;&#xA;&#xA;The audio export failed, possily because the bitrate you specified was two high or too low for the video codec.&#xA;</string></string></module>

  



  Does anybody know what this error means and how this problem can be resolved ?