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• How to save H.264 stream to mp4 container using Accord.FFMPEG.Video

  4 décembre 2017, par rgeorg

  I am receiving raw H.264 frames in a callback in C#. I can save the stream to a *.264 file where I can see the video using Elecard StreamEye.

  Is it possible to save the video to an mp4 container using Accord.FFMPEG.Video VideoFileWriter or VideoFileSource without re-encoding it ?

  I would rather not have to implement it using p/Invokes to libav unless there is no alternative.

• How to overlay and save a video with gif in Android ?

  5 avril 2017, par mr nooby noob

  I currently am able to display a gif while recording a video, however when the video is saved it does not display the gif.

  One hacky solution that I thought of is that I simply could just record the screen while recording and save that file instead, however there are some issues that I have with this, ie the audio quality and other items on the screen being saved, such as the video buttons, etc.

  How can I use something like FFMPEG, or anything else that, to save a gif overlay while recording a video ?

• I cant save the animation

  17 mai 2021, par Gokul

  i tried various examples though i cant find proper solution. This is the example code of my project i want to save this in a mp4 format and i used ffmpeg. Any suggestion for this would be appreciated. Thank you in advance

  


  import pandas as pd
import numpy as np
import ma``tplotlib.pyplot as plt
import matplotlib.animation as animation

df = data.iloc[0:250, 4:12]
df1 = df2.iloc[:,0:3]

a1 = df.iloc[:,0]/2
a2 = df.iloc[:,1]/2
b1 = df.iloc[:,2]/2
b2 = df.iloc[:,3]/2
c1 = df.iloc[:,4]/2
c2 = df.iloc[:,5]/2
m1 = df1.iloc[:,0]
m2 = df1.iloc[:,1]
m3 = df1.iloc[:,2]

fig ,ax = plt.subplots()

l1, = ax.plot (vert1, vert2, 'ro', markersize = m1[0])
l2, = ax.plot (long1, long2, 'ro', markersize = m2[0])
l3, = ax.plot (tras1, tras2, 'ro', markersize = m3[0])

def init():    
    l1.set_data([],[])
    l2.set_data([],[])
    l3.set_data([],[])
    
    return (l1,l2,l3)

def animate(i,l1,l2,l3):
    
    l1.set_data(vert1[i], vert2[i])
    l1.set_markersize(m1[i])
    l2.set_data(long1[i], long2[i])
    l2.set_markersize(m2[i])
    l3.set_data(tras1[i], tras2[i])
    l3.set_markersize(m3[i])

    return (l1,l2,l3)

Writer = animation.writers['ffmpeg']
writer = Writer(fps= 100, metadata = dict(artist = 'me'), bitrate = 1800)

ani = animation.FuncAnimation(fig, animate, fargs=(l1,l2,l3), init_func=init, interval=10, blit=False)
ani.save('/Users/gokulthangavel/Downloads/basic_animation.mp4', writer = writer)

plt.show()