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• avfilter/x86/vf_atadenoise : add SIMD for serial too

  17 octobre 2019, par Paul B Mahol

  avfilter/x86/vf_atadenoise : add SIMD for serial too
  

  • [DH] libavfilter/x86/vf_atadenoise.asm
  • [DH] libavfilter/x86/vf_atadenoise_init.c

• Stream video over serial port using FFmpeg [closed]

  13 septembre 2020, par Rasoul Sharifian

  I am using the FFmpeg library to stream videos by UDP and LAN cables, something like this :

  


  What we have now

  


  But as our embedding systems just have serial ports the data must stream over the serial ports.
something like this :

  


  What we are trying to achieve

  


  So the question is : Is it possible to stream videos over the serial port using the FFmpeg library ? Or is there any other library that can compress and stream videos over serial ports ?

  


  I also used a kind of Uart to ethernet converter hardware module to solve the problem and hopefully, this worked for me. But the project goal is to send video data over serial ports originally and not using some hardware converters.

  


  Any suggestions would be helpful.

  


• How to create video by stitching together images (.png) where the serial on each image file increases by 6

  10 avril 2024, par DataStatsExplorer

  I am trying to create a video (preferably mp4) from a series of png images. However, the name of each image file increases by 6 every frame. For example, I would have depthframe_0000 as the first frame, and depthframe_0001 for the next frame.

  


  There are a few answers that have answered a similar question but I am unable to process the video when the image files are not increasing by 1.

  


  I would like to keep the fps at 5. I am using ffmpeg as the suggested in the answers above but am open to any other suggestion.

  


  The collab code that I have put together is as follows :

  


  import subprocess

# Define the frame rate and the input/output paths
output_fps = 5
input_path = "/content/drive/MyDrive/depth/depthframe_%04d.png"
output_path = "/content/drive/MyDrive/depth.mp4"

# Create a list of the frames
frames = [input_path % i for i in range(0, 2671, 6)]  # Update range as needed

# Write the list of frames to a temporary text file
with open('frames.txt', 'w') as f:
    for frame in frames:
        f.write(f"file '{frame}'\n")

# Create the command
command = [
    "ffmpeg",
    "-f", "concat",
    "-safe", "0",
    "-i", "frames.txt",
    "-c:v", "libx264",
    "-pix_fmt", "yuv420p",
    output_path
]

# Run the command
subprocess.run(command, check=True)