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• Smooth scale animation in ffmpeg

  3 août 2018, par Makes

  How can I smooth the animations of scale ?

  ffmpeg -i bg.mp4 -loop 1 -i blank.png -filter_complex "[1:v]drawtext=fontfile=ariblk.ttf:text=EXAMPLE:x=(main_w-text_w)/2:y=(main_h-max_glyph_a)/2:fontcolor=0xFFFFFF:fontsize=200:alpha=1[txt];[txt]sendcmd=f=data.cmd,scale=w=0:h=-1[txtscale];[0:v][txtscale]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2:shortest=1" preview.mp4

  Video resolution 1280 * 720 -> scale w = ’12.8 * X’, X - scale value (data from the After Effects)

  data.cmd

  0   scale w '   12.8*   72  '; 0.040    scale w '   12.8*   72.3944 '; 0.080    scale w '   12.8*   72.7887 '; 0.120    scale w '   12.8*   73.1831 '; 0.160    scale w '   12.8*   73.5775 '; 0.200    scale w '   12.8*   73.9718 '; 0.240    scale w '   12.8*   74.3662 '; 0.280    scale w '   12.8*   74.7606 '; 0.320    scale w '   12.8*   75.1549 '; 0.360    scale w '   12.8*   75.5493 '; 0.400    scale w '   12.8*   75.9437 '; 0.440    scale w '   12.8*   76.338  '; 0.480    scale w '   12.8*   76.7324 '; 0.520    scale w '   12.8*   77.1268 '; 0.560    scale w '   12.8*   77.5211 '; 0.600    scale w '   12.8*   77.9155 '; 0.640    scale w '   12.8*   78.3099 '; 0.680    scale w '   12.8*   78.7042 '; 0.720    scale w '   12.8*   79.0986 '; 0.760    scale w '   12.8*   79.493  '; 0.800    scale w '   12.8*   79.8873 '; 0.840    scale w '   12.8*   80.2817 '; 0.880    scale w '   12.8*   80.6761 '; 0.920    scale w '   12.8*   81.0704 '; 0.960    scale w '   12.8*   81.4648 '; 1.000    scale w '   12.8*   81.8592 '; 1.040    scale w '   12.8*   82.2535 '; 1.080    scale w '   12.8*   82.6479 '; 1.120    scale w '   12.8*   83.0423 '; 1.160    scale w '   12.8*   83.4366 '; 1.200    scale w '   12.8*   83.831  '; 1.240    scale w '   12.8*   84.2254 '; 1.280    scale w '   12.8*   84.6197 '; 1.320    scale w '   12.8*   85.0141 '; 1.360    scale w '   12.8*   85.4085 '; 1.400    scale w '   12.8*   85.8028 '; 1.440    scale w '   12.8*   86.1972 '; 1.480    scale w '   12.8*   86.5915 '; 1.520    scale w '   12.8*   86.9859 '; 1.560    scale w '   12.8*   87.3803 '; 1.600    scale w '   12.8*   87.7746 '; 1.640    scale w '   12.8*   88.169  '; 1.680    scale w '   12.8*   88.5634 '; 1.720    scale w '   12.8*   88.9577 '; 1.760    scale w '   12.8*   89.3521 '; 1.800    scale w '   12.8*   89.7465 '; 1.840    scale w '   12.8*   90.1408 '; 1.880    scale w '   12.8*   90.5352 '; 1.920    scale w '   12.8*   90.9296 '; 1.960    scale w '   12.8*   91.3239 '; 2.000    scale w '   12.8*   91.7183 '; 2.040    scale w '   12.8*   92.1127 '; 2.080    scale w '   12.8*   92.507  '; 2.120    scale w '   12.8*   92.9014 '; 2.160    scale w '   12.8*   93.2958 '; 2.200    scale w '   12.8*   93.6901 '; 2.240    scale w '   12.8*   94.0845 '; 2.280    scale w '   12.8*   94.4789 '; 2.320    scale w '   12.8*   94.8732 '; 2.360    scale w '   12.8*   95.2676 '; 2.400    scale w '   12.8*   95.662  '; 2.440    scale w '   12.8*   96.0563 '; 2.480    scale w '   12.8*   96.4507 '; 2.520    scale w '   12.8*   96.8451 '; 2.560    scale w '   12.8*   97.2394 '; 2.600    scale w '   12.8*   97.6338 '; 2.640    scale w '   12.8*   98.0282 '; 2.680    scale w '   12.8*   98.4225 '; 2.720    scale w '   12.8*   98.8169 '; 2.760    scale w '   12.8*   99.2113 '; 2.800    scale w '   12.8*   99.6056 '; 2.840    scale w '   12.8*   100 '; 

  

• Laravel Queue Timeout

  25 juin 2021, par Teldar

  I'm running Laravel queue with that command :

  



  /usr/bin/php7.2 artisan queue:listen --timeout=0


  



  But the process keeps stopping at 300 seconds with that error :

  



  Symfony\\Component\\Process\\Exception\\ProcessTimedOutException(code: 0): The process [...] exceeded the timeout of 300 seconds


  



  I've also tried to set timeout in job's class :

  



  public $timeout = 5000;


  



  Anyone know what to do ? This process is for video encoding so a bit long running.

  



  Thx !

  


• avformat/mpegenc : Ensure packet queue stays valid

  15 février 2021, par Andreas Rheinhardt

  avformat/mpegenc : Ensure packet queue stays valid
  The MPEG-PS muxer uses a custom queue of custom packets. To keep track
  
  of it, it has a pointer (named predecode_packet) to the head of the
  
  queue and a pointer to where the next packet is to be added (it points
  
  to the next-pointer of the last element of the queue) ; furthermore,
  
  there is also a pointer that points into the queue (called premux_packet).
  The exact behaviour was as follows : If premux_packet was NULL when a
  
  packet is received, it is taken to mean that the old queue is empty and
  
  a new queue is started. premux_packet will point to the head of said
  
  queue and the next_packet-pointer points to its next pointer. If
  
  predecode_packet is NULL, it will also made to point to the newly
  
  allocated element.
  But if premux_packet is NULL and predecode_packet is not, then there
  
  will be two queues with head elements premux_packet and
  
  predecode_packet. Yet only elements reachable from predecode_packet are
  
  ever freed, so the premux_packet queue leaks.
  
  Worse yet, when the predecode_packet queue will be eventually exhausted,
  
  predecode_packet will be made to point into the other queue and when
  
  predecode_packet will be freed, the next pointer of the preceding
  
  element of the queue will still point to the element just freed. This
  
  element might very well be still reachable from premux_packet which
  
  leads to use-after-frees lateron. This happened in the tickets mentioned
  
  below.
  Fix this by never creating two queues in the first place by checking for
  
  predecode_packet to know whether the queue is empty. If premux_packet is
  
  NULL, then it is set to the newly allocated element of the queue.
  Fixes tickets #6887, #8188 and #8266.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/mpegenc.c