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• Looking to play back non-encoded video upload then export gif from selection point via FFMPEG

  10 novembre 2019, par Christopher Neil

  We’ve been trying to crack this code all week, reaching out to everyone to see if you have any solutions ?

  1. We want the user to upload a video and in the next step he will select a small 5 second loop of the video which will be made as a gif.
  2. Old developer was able to do this by splicing the video at 10 seconds instead of 5 but not re-encoding it meant that it would sometimes be beyond 12 seconds and in some cases less than 7.
  3. We changed the code to force keyframes with re encoding so that it splices the video at exactly 5 seconds to show the loop.
  4. These slices are shown to the user using html5 video player.
  5. Upon selection of the loop that sliced video is converted to gif.

  Everything is working in the vice order. The issue is when the user uploads a large sized and length video this slicing and re-encoding takes forever and that cause the user to feel the site is not working properly.

  What we want is very simple :

  1. Show 5 second portion of the video on loop.
  2. If user wants to select another loop he/she clicks the next button and is taken to the next 5 second loop which would be either at 25% of the video or some other
  3. On selection of that portion it converts it into gif.

• libFLAC : Fix cpuid detecton on old Cyrix CPUs

  13 juillet 2016, par Erik de Castro Lopo

  libFLAC : Fix cpuid detecton on old Cyrix CPUs
  Some old CPUs (eg Cyrix) set EDX but not ECX when executing CPUID.
  
  One of the solutions is to clear ECX before calling cpuid. From
  
  https://bugzilla.mozilla.org/show_bug.cgi?id=1096651#c9 bug
  Patch-from : lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/ia32/cpu_asm.nasm

• MP4 Videos on website embed with html5 does not play on iOS

  31 août 2012, par Sidner

  So I have a couple of videos on my website that I shot using the iPhone 4 and then converted to mp4, webm and ogg, so that I can use them with html5. Thing is, the video does not play at all on the 4 iOS devices that I tested and neither on Chrome for Android.

  The Chrome issue could be because some of the mp4 are actually m4v files, but still after encoding with handbrake a video to the iphone 4 presset and in mp4 format, it still does not play.

  What happens, you ask ? Well, it shows the play button crossed out with a diagonal bar, the debug console on Safari does not show any message untill I try to access the video directly. Then it says : QuickTime Movie could not be played.

  What can I do ? I have been trying to encode with ffmpeg, have tried a handful of different solutions, some even found here on stackoverlow, but to no avail. The videos do get shorter, both in display size and MBs, but nothing works to fix the issue at hand.

  I've been trying to get this corrected for a couple of weeks now. Any help and/or suggestions are welcome.

  Thank you.

  By the way, all the videos are on a registred users section of the website, but I have one for debugin on the main page, so feel free to test.

  https://sidnerwebsite.sytes.net