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Firefox HTML5 Video Audio crackles

  • 2 replies
  • 1 has this problem
  • Last reply by firehold

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when embedding a bigger video in firefox i got audio bugs. It crackles like an old movie. No problems in Chrome.

The video was converted with VLC to MP4/MOV with H-264 video and MPEG audio codecs. Because of its a very high quality video, the file size and Bitrates are very high. Is it possible, that firefox has a problem with that?

I know, usually you should never offering a video with that size on a web template, but its local hosted for an kiosk-mode project.

Example File:

FILE Name: Holliday_Hawaii_2019.mp4 Type: MP4 File Size: 5.39 GB (5.78.399.926 Bytes)

VIDEO Resolution: 1920 x 1080 px Data rate: 8082 kBit/s Total bitrate: 8721 kBit/s Frame rate: 23.98 Pictures/Second

AUDIO Bit rate: 638 kBit/s Channels: 2 Audio sampl: 44.100 kHze rate

All Replies (2)

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Have you contacted VLC support?

This is what I use; Free MP4 Video Converter

Convert WEBM, AVI, FLV, MOV and other videos to MP4 & more

Free MP4 Video Converter is a simple yet functional tool to convert video files to MP4 format compatible with popular multimedia devices.


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Thanks for your answer. Unfortunatelly this tool is not really free, you neet Premium Version otherwise you have a watermark in video and best quality is also not aviable. No matter which converter it would be an intertesting information which codec shouldnt use for firefox, but on Chrome it works fine. Because of that its also no VLC-Problem, its a firefox problem.

Modified by firehold


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