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• Texture bound to texture unit 0 is not renderable

  2 décembre 2018, par Trying_To_Understand

  I followed this tutorial https://github.com/phoboslab/jsmpeg. I have an open wesocket that gets the data. Sometimes, it’s take a long time to the ffmpeg (on a remote computer) to get the data from my ip camera, so I wrote a setTimeout function that waites for 10 sec to be "sure" that the ffmpeg getting the data from the ip camera. If I remove this setTimeout function this error will show up :

  [.WebGL-0000020CFA5C04D0]RENDER WARNING : texture bound to texture unit 0 is not renderable. It maybe non-power-of-2 and have incompatible texture filtering.

  This is my code for showing the stream to the client :

  this.dataService.getDataByParam(camera.CameraId.toString())
  
    .subscribe(
  
    (result: any) => {
  
  
  
      setTimeout(() => {
  
        this.ws = new WebSocket('ws://' + result);
  
        $(document).ready(() => {
  
  
  
          this.player = new jsmpeg(this.ws, {
  
            canvas: document.getElementById("canvas"),
  
            autoplay: true,
  
            audio: true,
  
            pauseWhenHidden: false,
  
          });
  
  
  
        })
  
      }, 10000);
  
    },
  
    (error: Error) => {
  
      this.streamErrorMsg = "Problem with the server, please try again after some time."
  
    });
  
   }

  How can i know for sure that the ffmpeg has connected successfully to the camera and started to convert the data on the client ? i want to avoid writting the setTimeout function.

• MoviePy Create Video that keeps audio on Twitter

  26 janvier 2019, par SDS

  I’m exporting lots of videos and was planning to use them on Twitter.

  When I read the documentation the first time I (foolishly) thought I only had to worry about the dimensions and the rest would take care of itself.

  I have many files that look and play great on my PC but as soon as I load them into Twitter there is no audio.
  Twitter’s Media Best Practices are located here :

  Recommended Video Codec: H264 High Profile
  
  Recommended Frame Rates: 30 FPS, 60 FPS
  
  Recommended Video Resolution: 1280x720 (landscape), 720x1280 (portrait), 720x720 (square)
  
  Recommended Minimum Video Bitrate: 5,000 kbps
  
  Recommended Minimum Audio Bitrate: 128 kbps
  
  Recommended Audio Codec: AAC LC
  
  Recommended Aspect Ratio: 16:9 (landscape or portrait), 1:1 (square)
  
  Advanced:
  
  
  
  Frame rate must be 60 FPS or less
  
  Dimensions must be between 32x32 and 1280x1024
  
  File size must not exceed 512 mb
  
  Duration must be between 0.5 seconds and 140 seconds
  
  Aspect ratio must be between 1:3 and 3:1
  
  Must have 1:1 pixel aspect ratio
  
  Only YUV 4:2:0 pixel format is supported
  
  Audio must be AAC with Low Complexity profile. High-Efficiency AAC is not supported
  
  Audio must be mono or stereo, not 5.1 or greater
  
  Must not have open GOP
  
  Must use progressive scan

  Here’s the specs on a specific video :

  Video ----
  
  Length: 00:00:12
  
  Frame width 1280
  
  Frame height 720
  
  Data rate 238kbps
  
  Total bitrate 368kbps
  
  Frame rate 24.00 frames/second
  
  Audio --
  
  Bit rate 129 kbps
  
  Channels 2 (stereo)
  
  Audio sample rate 44.100 kHz
  
  File --
  
  Size 551 KB
  
  Item type MP4 File

  The code is fairly straightforward. I grab an image and make a short intro frame with it, then add two short clips and put it all together as you can see here :

  image_clip = ImageClip(my_image)   image_clip.set_duration(seconds).write_videofile('F:/sm_Temp_Files/trash_%s.mp4' % fname,fps=24)
  
  image_video_clip = mpy.VideoFileClip('F:/sm_Temp_Files/trash_%s.mp4' % fname)
  
  video_path = (my_video_path)
  
  video_clip = mpy.VideoFileClip(video_path, target_resolution = (h,w),audio=True)
  
  outro_clip = mpy.VideoFileClip('Logo_Intro_w_Stinger_Large.mp4',target_resolution = (h,w),audio=True)
  
  clips = [image_video_clip,video_clip,image_video_clip,video_clip,image_video_clip,outro_clip]
  
  slided_clips = [CompositeVideoClip([clip.fx( transfx.crossfadein, transition_seconds)]) for clip in clips]
  
  c = concatenate_videoclips(slided_clips)                
  
  c.write_videofile('F:/sm_Short_Video/sm_%s.mp4' % fname,fps=24)

  I’ll admit, I’m out of my league to know what to do next. When Googling it looks like others have had similar issues but show fixes in FFMpeg, like this example.

  Yes, I know MoviePy is written on top of FFMpeg but for a novice like me it would be really nice if there was tweaks I could do inside of MoviePy to get the audio to work on Twitter.

  Thank you in advance !

• can't record docker selenium with ffmpeg and ubuntu 18

  1er janvier 2019, par Alex028502

  I have a script that starts a selenium/standalone-chrome container, starts recording with ffmpeg, and runs the selenium tests. However, it is not working with ubuntu 18, possibly because of the ffmpeg version (3.4.4 instead of 2.8.15).

  I have broken down the problem into a couple commands which work fine in ubuntu 16 but not ubuntu 18 :

  start selenium container in terminal #1

  docker run --network=host --shm-size=2g -e SCREEN_WIDTH=1920 -e SCREEN_HEIGHT=1080 selenium/standalone-chrome:3.141.59-antimony

  start recording in terminal #2

  rm -f test.mp4
  
  # :99 seems to be the default for the selenium container
  
  ffmpeg -f x11grab -video_size 1920x1080 -i :99 -codec:v libx264 -r 4 test.mp4

  and I get something that looks like this

  frame=    2 fps=0.1 q=-1.0 Lsize=       2kB time=00:00:00.25 bitrate=  75.9kbits/s dup=0 drop=413 speed=0.0165

  the time stays at 0, and then goes up to 25msec when I stop it.

  On the other hand, if I just start regular screen buffer in terminal #1

  Xvfb :99 -screen 0 1920x1080x24

  and run the same thing as above in terminal #2, everything works

  Also, I am pretty sure that the above ffmpeg command worked in ubuntu 16, with ffmpeg-3.

  So to summarise when the above ffmpeg command seems to work :

                     | ubuntu 16 (ffmpeg 3) | ubuntu 18 (ffmpeg 4)
  
  just start Xvfb    | works                | works
  
  selenium container | works                | DOES NOT WORK

  Any ideas ?