# VC1 decoding using Quick Sync

**URL:** https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257
**Category:** Plex Media Server
**Tags:** server-windows
**Created:** [March 26, 2024, 2:56pm UTC](https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257 "2024-03-26T14:56:51Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![kd6icz](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/kd6icz/32/18712_2.png) [@kd6icz](https://forums.plex.tv/u/kd6icz)
#### Post date: [March 26, 2024, 2:56pm UTC](https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257/1 "2024-03-26T14:56:52Z")

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Server Version#: 1.40.1.8190  
Player Version#: Android 10.6.0.5036

Having an issue with VC1 and QSV. PMS chooses to use software instead of hardware to decode the VC1 media. In doing this the transcoding process hangs up and never starts playing the video.

If I use my Nvidia GPU it decodes VC1 just fine and plays smoothly.

My two questions are is this normal behavior to use software to decode VC1? If so what is causing PMS to hang up in decoding using software?

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### Author: ![FordGuy61](https://avatars.discourse-cdn.com/v4/letter/f/22d042/32.png) [@FordGuy61](https://forums.plex.tv/u/FordGuy61)
#### Post date: [March 27, 2024, 1:16am UTC](https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257/2 "2024-03-27T01:16:28Z")

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Is this resolved, given your post on the other thread?

> [@HW transcoding not working on motherboards with BMC graphics (logs attached)](https://forums.plex.tv/t/hw-transcoding-not-working-on-motherboards-with-bmc-graphics-logs-attached/863403/72):
>
> @sa2000 and @chris_decker08 looks like todays beta has fixed the VC1 and MPEG2 decoding issues on the UHD 770. So as far as I can tell all is good! [IMG\_3358]

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### Author: ![kd6icz](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/kd6icz/32/18712_2.png) [@kd6icz](https://forums.plex.tv/u/kd6icz)
#### Post date: [March 27, 2024, 1:51am UTC](https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257/3 "2024-03-27T01:51:35Z")

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Yes it is.

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### Author: ![FordGuy61](https://avatars.discourse-cdn.com/v4/letter/f/22d042/32.png) [@FordGuy61](https://forums.plex.tv/u/FordGuy61)
#### Post date: [March 27, 2024, 3:48am UTC](https://forums.plex.tv/t/vc1-decoding-using-quick-sync/873257/4 "2024-03-27T03:48:34Z")

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