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• avformat/mxf : add platform local tag

  2 février 2021, par Limin Wang

  avformat/mxf : add platform local tag
  Please check the string of platform with below command :
  
  ./ffmpeg -i ../fate-suite/mxf/Sony-00001.mxf -c:v copy -c:a copy out.mxf
  
  ./ffmpeg -i out.mxf
  
  ....
  
  application_platform : Lavf (linux)
  Reviewed-by : Tomas Härdin <tjoppen@acc.umu.se>
  
  Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
  

  • [DH] configure
  • [DH] libavformat/mxfenc.c
  • [DH] tests/ref/fate/copy-trac4914
  • [DH] tests/ref/fate/mxf-d10-user-comments
  • [DH] tests/ref/fate/mxf-opatom-user-comments
  • [DH] tests/ref/fate/mxf-reel_name
  • [DH] tests/ref/fate/mxf-user-comments
  • [DH] tests/ref/fate/time_base
  • [DH] tests/ref/lavf/mxf
  • [DH] tests/ref/lavf/mxf_d10
  • [DH] tests/ref/lavf/mxf_dv25
  • [DH] tests/ref/lavf/mxf_dvcpro50
  • [DH] tests/ref/lavf/mxf_opatom
  • [DH] tests/ref/lavf/mxf_opatom_audio

• Matplotlib use Ffmpeg to save plot to be mp4 not include full step

  21 décembre 2020, par 昌翰余

  I use ffmpeg to store the dynamic graph drawn on matplotlib, but the output file is only 2 seconds
but It should have been 30 seconds.
I set a graph to run three curves, a total of 30 seconds of data,
the graph that ran on the py file is normal,
but the output is only the first two seconds of the output.
May I ask if I missed something

  


  Below is my code

  


  import matplotlib.pyplot as plt
from matplotlib import animation
from numpy import random 
import pandas as pd
from matplotlib.animation import FFMpegWriter

FFwriter=animation.FFMpegWriter(fps=30, extra_args=['-vcodec', 'libx264'])
data = pd.read_csv('apple1.csv', delimiter = ',', dtype = None)
data = data.values
AccX1=[]
AccY1=[]
AccZ1=[]
AccX2=[]
AccY2=[]
AccZ2=[]

time = []

for i in range(600):
        AccX1.append(data[i][8])
        AccY1.append(data[i][9])
        AccZ1.append(data[i][10])
        AccX2.append(data[i][24])
        AccY2.append(data[i][25])
        AccZ2.append(data[i][26])
        
        time.append(data[i][0])
        
fig = plt.figure()
ax1 = plt.axes(xlim=(0,3000), ylim=(6,-6))
line, = ax1.plot([], [], lw=2)
plt.xlabel('ACC')
plt.ylabel('Time')

plotlays, plotcols = [3], ["r","g","b"]
lines = []
for index in range(3):
    lobj = ax1.plot([],[],lw=2,color=plotcols[index])[0]
    lines.append(lobj)


def init():
    for line in lines:
        line.set_data([],[])
    return lines

x1,y1 = [],[]
x2,y2 = [],[]
x3,y3 = [],[]



i=0

def animate(frame):
    global i
    
    i+=1
    x = i
    y = AccX1[i]

    x1.append(x)
    y1.append(y)

    x = i
    y = AccY1[i]
    x2.append(x)
    y2.append(y)

    x = i
    y = AccZ1[i]
    x3.append(x)
    y3.append(y)
    

    xlist = [x1, x2,x3]
    ylist = [y1, y2,y3]


    for lnum,line in enumerate(lines):
        line.set_data(xlist[lnum], ylist[lnum]) 


    return lines


anim = animation.FuncAnimation(fig, animate,
                    init_func=init, blit=True,interval=10)
anim.save('test.mp4',writer=FFwriter)
plt.show()


  


  The dynamic picture ran out using plt.show is correct.
And I don't think I have set the length of storage. Did I add something ?

  


• Error in compiling x264 on ARM 64-bit platform

  2 septembre 2021, par yanzhang.guo

  The same x264 source code I compiled on Debian 10 (Buster) system has no problem, but I can't compile it on an ARM 64-bit platform. Why ?

  


  Maybe there is something wrong with the Makefile, but I don't know where it is.

  


  


  1. Configure

     


     ./configure --disable-asm --enable-shared  --host=aarch64-linux

platform:      AARCH64
byte order:    little-endian
system:        LINUX
cli:           yes
libx264:       internal
shared:        yes
static:        no
asm:           no
interlaced:    yes
avs:           avxsynth
lavf:          no
ffms:          no
mp4:           no
gpl:           yes
thread:        posix
opencl:        yes
filters:       crop select_every
lto:           no
debug:         no
gprof:         no
strip:         no
PIC:           yes
bit depth:     all
chroma format: all


     


  


  2. Edit file config.mak,

     


     SRCPATH=.
prefix=/usr/local
exec_prefix=${prefix}
bindir=${exec_prefix}/bin
libdir=${exec_prefix}/lib
includedir=${prefix}/include
SYS_ARCH=AARCH64
SYS=LINUX
CC=aarch64-linux-gnu-gcc
CFLAGS=-Wno-maybe-uninitialized -Wshadow -O3 -ffast-math  -Wall -I. -I$(SRCPATH) -std=gnu99 -
D_GNU_SOURCE -fPIC -fomit-frame-pointer -fno-tree-vectorize
COMPILER=GNU
COMPILER_STYLE=GNU
DEPMM=-MM -g0
DEPMT=-MT
LD=aarch64-linux-gnu-gcc -o
LDFLAGS= -lm -lpthread -ldl
LIBX264=libx264.a
AR=aarch64-linux-gnu-gcc-ar rc
RANLIB=aarch64-linux-gnu-gcc-ranlib
STRIP=aarch64-linux-gnu-strip
INSTALL=install
AS=
ASFLAGS= -I. -I$(SRCPATH) -DSTACK_ALIGNMENT=16 -DPIC
RC=
RCFLAGS=
EXE=
HAVE_GETOPT_LONG=1
DEVNULL=/dev/null
PROF_GEN_CC=-fprofile-generate
PROF_GEN_LD=-fprofile-generate
PROF_USE_CC=-fprofile-use
PROF_USE_LD=-fprofile-use
HAVE_OPENCL=yes
CC_O=-o $@
default: cli
install: install-cli
SOSUFFIX=so
SONAME=libx264.so.157
SOFLAGS=-shared -Wl,-soname,$(SONAME)  -Wl,-Bsymbolic
default: lib-shared
install: install-lib-shared
LDFLAGSCLI = -ldl
CLI_LIBX264 = $(LIBX264)


     


  


  3. Make, an error occurred, details in error.

     


  


  4. Add file config.h after configure,

     


      #define HAVE_MALLOC_H 1
 #define ARCH_X86_64 1
 #define SYS_LINUX 1
 #define STACK_ALIGNMENT 64
 #define HAVE_POSIXTHREAD 1
 #define HAVE_CPU_COUNT 1
 #define HAVE_THREAD 1
 #define HAVE_LOG2F 1
 #define HAVE_STRTOK_R 1
 #define HAVE_CLOCK_GETTIME 1
 #define HAVE_MMAP 1
 #define HAVE_THP 1
 #define HAVE_AVS 1
 #define USE_AVXSYNTH 1
 #define HAVE_VECTOREXT 1
 #define fseek fseeko
 #define ftell ftello
 #define HAVE_BITDEPTH8 1
 #define HAVE_BITDEPTH10 1
 #define HAVE_GPL 1
 #define HAVE_INTERLACED 1
 #define HAVE_OPENCL (BIT_DEPTH==8)
 #define HAVE_ALTIVEC 0
 #define HAVE_ALTIVEC_H 0
 #define HAVE_MMX 0
 #define HAVE_ARMV6 0
 #define HAVE_ARMV6T2 0
 #define HAVE_NEON 0
 #define HAVE_BEOSTHREAD 0
 #define HAVE_WIN32THREAD 0
 #define HAVE_SWSCALE 0
 #define HAVE_LAVF 0
 #define HAVE_FFMS 0
 #define HAVE_GPAC 0
 #define HAVE_LSMASH 0
 #define HAVE_X86_INLINE_ASM 0
 #define HAVE_AS_FUNC 0
 #define HAVE_INTEL_DISPATCHER 0
 #define HAVE_MSA 0
 #define HAVE_WINRT 0
 #define HAVE_VSX 0
 #define HAVE_ARM_INLINE_ASM 0