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aliofwind's avatar
aliofwind
Brass Contributor
Jan 20, 2021

HEVC video decoding broken with B-frames

When Edge Chromium playing HEVC video, sometimes video will be similar to stuttering but audio is normal.   To find out the cause of the problem, I test to playback many HEVC video, include videos ...
aliofwind's avatar
aliofwind
Brass Contributor
Jun 08, 2021

jesseinsfThis problem happened when I played the local HEVC codec mp4 video, I don’t think it is related to PlayReady DRM

abdelfattah's avatar
abdelfattah
Iron Contributor
Jun 11, 2021
No issues whatsoever here with 1080p HEVC Main10 (x265, bframes=12), or a 2160p HDR HEVC Main10 file in Movies & TV.

The same 1080p file is a weird stuttery mess if I remux it to MP4 and drag and drop it on Edge Dev.

HEVC Extensions from Device Manufacturer 1.0.41023.0 with an AMD GPU on 21H1.
  • aliofwind's avatar
    aliofwind
    Brass Contributor
    Jun 14, 2021
    I tried to install the HEVC extension before July 2020, and there is no such problem on version 21821 and 31823.
    In the November release of version 33424 has been recently updated to version 41483 has shown a decoding problem.
    HEVC Extension version 31823 download link: https://www.free-codecs.com/hevc_video_extension_download.htm
    • matt-sr's avatar
      matt-sr
      Copper Contributor
      Oct 13, 2021

      "I tried to install the HEVC extension before July 2020, and there is no such problem on version 21821 and 31823. [...] HEVC Extension version 31823 download link:
      https://www.free-codecs.com/hevc_video_extension_download.htm"


      aliofwind  Wow it really works..... h265 now plays smoothly in Edge (Chromium). thank you.

    • AmineI's avatar
      AmineI
      Brass Contributor
      Jul 05, 2021

      You are absolutely right, very nice find. So it may actually be a regression of the HEVC Extension itself and not completely related to Edge. It's still interesting that the Movies & TV app plays the same video just fine on any version

      • abdelfattah's avatar
        abdelfattah
        Iron Contributor
        Sep 20, 2021

        This is still not fixed. The video file in the top half of the page is an HEVC video with b-frames. Still a laggy/stuttery mess in Edge Stable and Dev. https://h265.webmfiles.org/embed-h265-video.php

         

        To clarify, I only noticed this issue again because I guess the Store must've let the HEVC Extension auto-update itself again. Re-installing 31823 and restarting Edge makes b-frame playback work just fine. How does a regression like this go unfixed for close to a year?

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