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Today's Topics:
1. Re: Corrupted Images (Colin Law)
----------------------------------------------------------------------
Message: 1
Date: Fri, 20 Mar 2020 13:33:44 +0000
From: Colin Law <clan...@gmail.com>
To: Motion discussion list <motion-user@lists.sourceforge.net>
Subject: Re: [Motion-user] Corrupted Images
Message-ID:
<CAL=0glu08lzdasccj2+xmuyosoqz7uafaphq7ukn08_f9sa...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
On Fri, 20 Mar 2020 at 12:53, Ken Cox <kenc...@gmail.com> wrote:
>
> Lots of good advice here. It will take me a bit to work through each piece. A
> couple of comments for now:
>
> ffplay returns an authentication error. Any ideas why that would be? I do
> have the cameras secured with username/password, but motion works when these
> are passed in the URL. ffplay does not.
>
> I'm not supper jazzed about lowering the resolution. Part of the reason I
> purchased these cameras was to get a clearer view of an intruder's face at a
> distance. If it comes down to that, I think my preference would be to keep
> things as they are and just deal with an occasional bad image.
>
Alternatively see if you can drop the frame rate significantly in the
camera. It is not so beneficial doing it on the PC as it still has to
decode every frame even if motion is not going to use it. That should
not affect your ability to identify faces.
Colin
> Thanks!
> Ken
>
>
> On Fri, Mar 20, 2020 at 3:33 AM manu.kemppainen--- via Motion-user
> <motion-user@lists.sourceforge.net> wrote:
>>
>> Same happened with my camera. Either lower part of the picture was corrupted
>> (typically green) whe RTSP I-frames were lost or similar to the example when
>> RTSP I-frame was received but RTSP sub-frames were either missing or
>> corrupted. Tosiara gave good test:ffplay to see if the frames are corrupted
>> also there - I bet they are.
>> It seems with my camera that camera is not capable for full resolution
>> encoding with plenty of changes in the image i.e. despite of the network
>> capability video is never going to work properly.
>> What you can try:
>> - Use camera jpeg output url if one exist (my camera supports this but image
>> resolution is lower)
>> - Configure camera RTSP output resolution lower
>> - Decrease the camera RTSP framerate (I got best results with 4 fps)
>> - Try to adjust camera bitrate (up or down)
>> - Try VBR/CBR for camera RTSP
>> - Check your framerate in motion.conf (currently rate is 100 which is
>> optimal for USB cameras)
>>
>> Bottleneck can also be your network. What is the network speed/topology/load?
>>
>> With ffmpeg I can force ffmpeg to only process I-frames from RTSP (i.e.
>> discard sub-frames).
>> Can I somehow force motion to only use I-frames from RTSP stream?
>>
>> --
>> Manu
>>
>>
>> -------- Alkuper?inen viesti --------
>> L?hett?j?: tosiara <tosi...@gmail.com>
>> P?iv?m??r?: pe 20. maalisk. 2020 klo 10.57
>> Vastaanottaja: Motion discussion list <motion-user@lists.sourceforge.net>
>> Aihe: Re: [Motion-user] Corrupted Images
>>
>> And I can see there are decoding issues in your motion log:
>>
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 411
>> packets
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 31
>> packets
>> [1:nc1] [ERR] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: error while
>> decoding MB 104 65, bytestream -5
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 20
>> packets
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 22
>> packets
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 14
>> packets
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 12
>> packets
>> [2:nc2] [ERR] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: error while
>> decoding MB 30 48, bytestream -5
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [1:nc1] [NTC] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: RTP: missed 87
>> packets
>> [1:nc1] [ERR] [ENC] [Mar 17 14:52:22] ffmpeg_avcodec_log: error while
>> decoding MB 109 66, bytestream -7
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:23] ffmpeg_avcodec_log: max delay reached.
>> need to consume packet
>> [2:nc2] [NTC] [ENC] [Mar 17 14:52:23] ffmpeg_avcodec_log: RTP: missed 246
>> packets
>> [2:nc2] [ERR] [ENC] [Mar 17 14:52:23] ffmpeg_avcodec_log: left block
>> unavailable for requested intra4x4 mode -1
>> [2:nc2] [ERR] [ENC] [Mar 17 14:52:23] ffmpeg_avcodec_log: error while
>> decoding MB 0 23, bytestream 7496
>>
>> It is either network issue or cpu resource
>>
>> On Fri, Mar 20, 2020 at 10:51 AM tosiara <tosi...@gmail.com> wrote:
>>
>> One thing to try is to view the same stream using ffplay. Do you see the
>> same artifacts randomly? Does ffplay log decoding errors?
>>
>> On Fri, Mar 20, 2020 at 10:45 AM walexand <w.alexan...@gmx.de> wrote:
>>
>> IMHO this is not a corrupted image. It is a compression artifact because
>> of the moving person in the room. Try a lower resolution. 2688x1520
>> pixels is too much for a motion jpeg stream.
>>
>> Alex
>>
>> On 19.03.20 21:42, manu.kemppainen--- via Motion-user wrote:
>> > Hi Ken,
>> >
>> > Your image seems to be 4mp (2688 x 1520) and it seems some frames have
>> > dropped
>> > from the stream.
>> > I have experienced similar problems with high resolution cameras.
>> > I did not manage to get RTSP out of the camera even when I connected
>> > ethernet
>> > cable directly between PC and Cam.
>> > My solution was to use the jpeg url for my camera.
>> >
>> > What is your frame rate in the camera?
>> > What is your bitrate in the camera?
>> >
>> > --
>> > Manu
>> >
>> >
>> > -------- Alkuper?inen viesti --------
>> > L?hett?j?: Ken Cox <kenc...@gmail.com>
>> > P?iv?m??r?: to 19. maalisk. 2020 klo 22.05
>> > Vastaanottaja: Motion discussion list <motion-user@lists.sourceforge.net>
>> > Aihe: Re: [Motion-user] Corrupted Images
>> >
>> > I tried to respond but apparently my message did not go through
>> > because the
>> > log file is rather large. I put all of this in a google drive folder
>> > with a
>> > shared link:
>> > https://drive.google.com/open?id=1FJ6ZmxCe1VFjhL_IfNBcIjusjy11I40i
>> > An example of one of my corrupt images, my three config files, and
>> > the full
>> > log from one day are included
>> >
>> > I appreciate you helping me with this!
>> >
>> > Thanks,
>> > Ken
>> >
>> >
>> > On Wed, Mar 18, 2020 at 1:34 AM tosiara <tosi...@gmail.com
>> > <mailto:tosi...@gmail.com>> wrote:
>> >
>> > Yes, please provide an example of an image
>> > And also would be nice to see your full config and full log
>> > It could be also an insufficient resource for decoding
>> > If this is really a network issue, you could try to change camera
>> > settings, like CBR over VBR or reduce I-framw interval
>> >
>> > On Tue, Mar 17, 2020 at 11:57 PM Ken Cox <kenc...@gmail.com
>> > <mailto:kenc...@gmail.com>> wrote:
>> >
>> > Hi all,
>> >
>> > I'm experiencing frequent image corruption. When it happens,
>> > it
>> > looks like it's blending 2 images with the changed pixels
>> > some weird
>> > ghostly looking mixture of the two images. Often I can tell
>> > there is
>> > an outline of a person there, but the details are a corrupted
>> > mess.
>> > I can provide an example if it helps. I did find in the
>> > configuration help page that without netcam_use_tcp set to on
>> > "rtsp/rtmp images are frequently corrupted and result in many
>> > false
>> > positive values and images that appear to be smeared." Mine
>> > was
>> > already set to on, so I tried off on a whim. It did not solve
>> > this
>> > issue, but did indeed add some additional smearing regions in
>> > many
>> > images that seem to be unrelated to the motion.
>> >
>> > Has anyone else seen this issue? Any ideas whats wrong or how
>> > to fix it?
>> >
>> > Thanks,
>> > Ken
>> > _______________________________________________
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>> >
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>> >
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>> >
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