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• lavfi/qsv : Copy metadata fields from the given input

  23 avril 2024, par Haihao Xiang

  lavfi/qsv : Copy metadata fields from the given input
  Currently it always copies the metadata fields from the last input when
  
  there are multiple inputs for the filter. For example, the metadata
  
  fields from input1 are copied to the output for overlay_qsv filter,
  
  however for regular overlay filters, the metadata fields from input0 are
  
  copied to the output. With this fix, we may copy the metadata fields
  
  from input0 to the ouput as well.
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] libavfilter/qsvvpp.c
  • [DH] libavfilter/qsvvpp.h
  • [DH] libavfilter/vf_overlay_qsv.c
  • [DH] libavfilter/vf_stack_qsv.c
  • [DH] libavfilter/vf_vpp_qsv.c

• Can't reproduce a mp4 video in any of my browsers (Ubuntu 22.04.4)

  8 mai 2024, par user3303019

  This one is weird. I can't reproduce the following video in the browser (tried brave, chrome, firefox and edge).

  


  https://a-pop.stg.intuitivo.ai/assets/animations/wowMomentOpenDoor.mp4

  


  


  1. I have installed all sorts of codecs I may need and the regular video player plays the file no problem.

     


  


  2. For some reason it was working on Brave up until last week and it wasn't on chrome.

     


  


  3. It only happens on Linux apparently. Windows, Mac, android and iOS have no problem with the browser playing the animation.

     


  


  


  I don't have a clue what could be happening. I've checked other mp4 videos online and they work (from v.reddit)

  


• Edge of text clipped a few pixels in ffmpeg

  18 mai 2024, par THEMOUNTAINSANDTHESKIES

  Trying to make a short video of a background image with text and some background audio. It's functional, but the right side of each line of my text is always clipped a few pixels. What am I missing ?

  


  Here's my python code (which includes the ffmpeg command) :

  


  font_size = 100
text='Example Text Example Text \n Example Text'
font_path = 'Bangers-Regular.ttf'
image_path = 'background.jpg'
audio_path = 'audio.wav'
duration = 15 #or whatever the audio's length is
output_path = 'output.mp4'

font_path_escaped = font_path.replace("\\", "\\\\\\\\").replace("C:", "C\\:")

lines = text.split('\n')
num_lines = len(lines)
line_height = font_size + 10
start_y = (1080 - line_height * num_lines) // 2

filter_complex = []
for i, line in enumerate(lines):
    y_position = start_y + i * line_height
    filter_complex.append(
        f"drawtext=text='{line}':fontfile='{font_path_escaped}':fontsize={font_size}:"
        f"x=((w-text_w)/2):y={y_position}:"
        "fontcolor=white:borderw=6:bordercolor=black"
    )

filter_complex_string = ','.join(filter_complex)

command = [
    'ffmpeg',
    '-loop', '1',
    '-i', image_path,
    '-i', audio_path,
    '-filter_complex', filter_complex_string,
    '-map', '[v]',
    '-map', '1:a',
    '-c:v', 'hevc_nvenc',
    '-c:a', 'aac',
    '-pix_fmt', 'yuv420p',
    '-t', str(duration),
    '-shortest',
    '-loglevel', 'debug',
    '-y',
    output_path
]


subprocess.run(command, check=True)
print(f"Video created successfully: {output_path}")


  


  and a frame from the outputted video :