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Groups > linux.debian.bugs.dist > #668658
| From | Peter Rabbitson <rabbit@rabbit.us> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#794327: Hardware H264 capture regression in UVC subsystem: wheezy(ok) => jessie(bad) |
| Date | 2015-08-01 14:00 +0200 |
| Message-ID | <pSDCh-3Ol-3@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
Package: linux-image-3.16.0-4-amd64 Version: 3.16.7-ckt11-1 Tags: patch fixed-upstream Greetings! A little bit after the official Wheezy linux-image (3.2) a change to the UVC subsystem[1] was merged and subsequently released as linux 3.3. A long-unnoticed side effect of this patch was a regression that produced invalid timestamps on hardware-encoded H264 captures, which is known to affect at least 2 different devices: Logitech C920[2] and a builtin Acer Orbicam[3]. The problem was recently acknowledged by the UVC maintainer and a patch was produced which fixes the issue [4]. Afaik it is slated to be included during the Linux 4.3 merge window this month. Since there is no way to work around this problem in userland [5], and there are many reports of this problem by different users [3], [6], [7], [8] it seems fitting to add this (rather small) patch[4] to debian's linux-image-3.16* quilt. Thank you in advance! Cheers P.S. Adding a one-time CC to the linux-media mailing list, in case a part of the above is factually incorrect. [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=66847ef [2] http://sourceforge.net/p/linux-uvc/mailman/message/33164469/ [3] http://www.spinics.net/lists/linux-media/msg92089.html [4] http://www.spinics.net/lists/linux-media/msg92022.html [5] http://ffmpeg.org/pipermail/ffmpeg-user/2015-July/027630.html [6] https://trac.ffmpeg.org/ticket/3956 [7] http://sourceforge.net/p/linux-uvc/mailman/message/33564420/ [8] http://askubuntu.com/questions/456175/logitech-c920-webcam-on-ubuntu-14-04-hesitates-chops-every-3-seconds -- To UNSUBSCRIBE, email to debian-bugs-dist-REQUEST@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
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Bug#794327: Hardware H264 capture regression in UVC subsystem: wheezy(ok) => jessie(bad) Peter Rabbitson <rabbit@rabbit.us> - 2015-08-01 14:00 +0200
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