Le Wed, Mar 12, 2025 at 02:21:10PM +0100, Kirill A. Korinsky a écrit :
> On Wed, 12 Mar 2025 11:30:03 +0100,
> Marcus Glocker <mar...@nazgul.ch> wrote:
> > 
> > On Wed, Mar 12, 2025 at 10:24:04AM GMT, Landry Breuil wrote:
> > 
> > > Le Wed, Mar 12, 2025 at 10:05:30AM +0100, Landry Breuil a ?crit :
> > > > hi,
> > > > 
> > > > updated my t470s from '#564: Tue Feb 25 21:20:18 MST 2025' to '#591: Tue
> > > > Mar 11 20:48:18 MDT 2025' and my webcam now shows weird 'stripes' on top
> > > > of the image (that works).
> > > 
> > > the 'weird stripes' only show up from some webrtc clients (ive noticed
> > > it with jitsi in firefox 137.0b4), using video(1) i havent been able to
> > > replicate (yet)..
> > > 
> > > no issue in https://mozilla.github.io/webrtc-landing/gum_test.html so
> > > might be the way jitsi queries the video device.
> > > 
> > > Landry
> > 
> > I have the same cam in my X1 Carbon.  I can't reproduce the issue on
> > video(1) either, because it's using YUYV422 as the default input format.
> > When using ffplay with MJPEG as input format, I can reproduce the issue.
> > 
> > I'll try to figure out which of the recent commits has introduced the
> > regression.
> > 
> 
> Landry, may I ask you to try this two patch which reverts USB3 speed for
> isoc devices?

havent tested this diff yet, should that be on top of mglockers or not ?

> Also, may I ask you to share output of ffplay -list_formats all -i /dev/videoX
> with and without this diffs?

with what i have now (eg the revert above), i have this

Raw       :     yuyv422 :  YUYV : 640x480 320x180 320x240 352x288 424x240 
640x360 848x480 960x540 1280x720
Compressed:       mjpeg : MJPEG : 640x480 320x180 320x240 352x288 424x240 
640x360 848x480 960x540 1280x720

Landry

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