# nDVR Chunklist 404 not found
**URL:** https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772
**Category:** Wowza Streaming Engine
**Created:** [February 16, 2018, 4:47am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772 "2018-02-16T04:47:54Z")
**Posts on this page:** 18
**Page:** 1
### Author:  [@Nathan\_Kadish](https://community.wowza.com/u/Nathan_Kadish)
#### Post date: [February 16, 2018, 4:47am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/1 "2018-02-16T04:47:54Z")
Hello all!
I just upgraded my Wowza instance to 4.7.4 from 4.7.1 and suddenly the 24/7 live stream I have on our website no longer works. Chrome’s dev tools shows:
[https://ssdcougars.tv/?page\_id=261](https://ssdcougars.tv/?page_id=261)
Failed to load resource: the server responded with a status of 404 (Not Found)
[https://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/chunklist\_w1322350481\_b2128000\_DVR.m3u8](https://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/chunklist_w1322350481_b2128000_DVR.m3u8)
The stream IS working, when I use Test Players the various transcoded streams work fine. When I launch the Wowza Player wizard, the stream works fine there as well.
My JWPlayer does not.
Odd thing is, if I disable DVR the stream works again (albeit without the DVR ability)
Logs show only this at time of accessing stream: (Newest to Oldest)
I notice the URI listed in the log is http:// not https:// – the coding on my website is https:// so I don’t know if that is an issue?
**2018-02-15**
23:44:55 (EST)
**connect**
cupertino (200)
-
**x-ctx:** 1197919931, **x-vhost:** _defaultVHost_, **x-app:** live, **x-appinst:** _definst_, **x-duration:** 2043.735, **s-ip:** [wowza.ssdcougars.tv](http://wowza.ssdcougars.tv),\*\*s-port:\*\*8443,\*\*s-uri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR), **c-ip:** XX.XX.XX.XX, **c-proto:** http (cupertino), **c-referrer:** [https://ssdcougars.tv/?page\_id=261,\*\*c-user-agent:\*\*Mozilla/5.0](https://ssdcougars.tv/?page_id=261, **c-user-agent:** Mozilla/5.0) (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36, **c-client-id:** 1197919931, **cs-bytes:** 0, **sc-bytes:** 0, **x-spos:** 0, **x-sname:** VGADVIstream\_all, **x-sname-query:** DVR,\*\*x-suri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR,\*\*x-suri-stem:\*\*http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR, **x-suri-stem:** http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **x-suri-query:** DVR,\*\*cs-uri-stem:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **cs-uri-query:** DVR
**2018-02-15**
23:41:39 (EST)
**disconnect**
cupertino (200)
-
**x-ctx:** 1322350481, **x-vhost:** _defaultVHost_, **x-app:** live, **x-appinst:** _definst_, **x-duration:** 1847.174, **s-ip:** [wowza.ssdcougars.tv](http://wowza.ssdcougars.tv),\*\*s-port:\*\*8443,\*\*s-uri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR), **c-ip:** XX.XX.XX.XX, **c-proto:** http (cupertino), **c-referrer:** [https://ssdcougars.tv/?page\_id=261,\*\*c-user-agent:\*\*Mozilla/5.0](https://ssdcougars.tv/?page_id=261, **c-user-agent:** Mozilla/5.0) (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36, **c-client-id:** 1322350481, **cs-bytes:** 0, **sc-bytes:** 1155, **x-spos:** 0, **x-sname:** VGADVIstream\_all, **x-sname-query:** DVR,\*\*x-suri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR,\*\*x-suri-stem:\*\*http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR, **x-suri-stem:** http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **x-suri-query:** DVR,\*\*cs-uri-stem:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **cs-uri-query:** DVR
**2018-02-15**
23:41:39 (EST)
**destroy**
stream (200)
-
**x-ctx:** VGADVIstream\_all, **x-vhost:** _defaultVHost_, **x-app:** live, **x-appinst:** _definst_, **x-duration:** 42.361,\*\*s-ip:\*\*[wowza.ssdcougars.tv](http://wowza.ssdcougars.tv), **s-port:** 8443,\*\*s-uri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR), **c-ip:** XX.XX.XX.XX, **c-proto:** http (cupertino), **c-referrer:** [https://ssdcougars.tv/?page\_id=261,\*\*c-user-agent:\*\*Mozilla/5.0](https://ssdcougars.tv/?page_id=261, **c-user-agent:** Mozilla/5.0) (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36, **c-client-id:** 1322350481, **cs-bytes:** 0, **sc-bytes:** 1155,\*\*x-stream-id:\*\*28, **x-spos:** 0, **cs-stream-bytes:** 0, **sc-stream-bytes:** 0,\*\*x-sname:\*\*VGADVIstream\_all, **x-sname-query:** DVR,\*\*x-suri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR,\*\*x-suri-stem:\*\*http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR, **x-suri-stem:** http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **x-suri-query:** DVR,\*\*cs-uri-stem:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **cs-uri-query:** DVR
**2018-02-15**
23:41:05 (EST)
**comment**
server (200)
HTTPStreamerAdapterCupertinoStreamer.service: Request timeout: 8000
**x-duration:** 1813.233
**2018-02-15**
23:40:57 (EST)
**create**
stream (200)
-
**x-ctx:** VGADVIstream\_all, **x-vhost:** _defaultVHost_, **x-app:** live, **x-appinst:** _definst_, **x-duration:** 0.004, **s-ip:** [wowza.ssdcougars.tv](http://wowza.ssdcougars.tv), **s-port:** 8443,\*\*s-uri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR), **c-ip:** XX.XX.XX.XX, **c-proto:** http (cupertino), **c-referrer:** [https://ssdcougars.tv/?page\_id=261,\*\*c-user-agent:\*\*Mozilla/5.0](https://ssdcougars.tv/?page_id=261, **c-user-agent:** Mozilla/5.0) (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36, **c-client-id:** 1322350481, **cs-bytes:** 0, **sc-bytes:** 0, **x-stream-id:** 28, **x-spos:** 0, **cs-stream-bytes:** 0, **sc-stream-bytes:** 0,\*\*x-sname:\*\*VGADVIstream\_all, **x-sname-query:** DVR,\*\*x-suri:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8?DVR,\*\*x-suri-stem:\*\*http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8?DVR, **x-suri-stem:** http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **x-suri-query:** DVR,\*\*cs-uri-stem:\*\*[http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream\_all/playlist.m3u8](http://wowza.ssdcougars.tv:8443/live/ngrp:VGADVIstream_all/playlist.m3u8), **cs-uri-query:** DVR
---
### Author:  [@Jermaine\_Hemby](https://community.wowza.com/u/Jermaine_Hemby)
#### Post date: [February 19, 2018, 6:10pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/2 "2018-02-19T18:10:10Z")
Hello,
Thanks for contacting the Wowza Community.
I see you already have a ticket open regarding this issue and it will be handled there.
regards,
Jermaine
---
### Author:  [@Piotr\_Golebiowski1](https://community.wowza.com/u/Piotr_Golebiowski1)
#### Post date: [February 19, 2018, 8:12pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/3 "2018-02-19T20:12:05Z")
I have the same problem with 4.7.4. We have to uninstall last version and go back to 4.7.3. It is working without problems with 4.7.3. Probably some error with last version.
---
### Author:  [@Michael\_Holt1](https://community.wowza.com/u/Michael_Holt1)
#### Post date: [February 22, 2018, 7:03pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/4 "2018-02-22T19:03:45Z")
Add me to the list. Rollback to 4.7.3.01 fixed it.
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [February 23, 2018, 1:03am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/5 "2018-02-23T01:03:33Z")
same problem here! did anyone get it working???
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [February 23, 2018, 5:57pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/7 "2018-02-23T17:57:34Z")
removing “?DVR” from the stream url allows the stream to work. obviously disabling dvr functionality for the end user.
---
### Author:  [@Michael\_Holt1](https://community.wowza.com/u/Michael_Holt1)
#### Post date: [February 23, 2018, 4:58pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/8 "2018-02-23T16:58:31Z")
I am also wondering if it is being caused by JWPlayer itself. JWPlayer just released vs. 8.1.10 that says in the changelog:
- “Fixed an issue where autostarting JW Live streams that return a 404 did not display the fatal error after setting up, resulting in a blank screen.”
It’s absolutely related to the combination of transcoding/transrating with DVR. If the DVR is turned off, then the issue disappears, or at least that is the only solution that worked for me. Other forums state that the smil file is incorrect. I don’t know what the answer is.
I don’t want to reinstall 4.7.4 and test the new version of JWPlayer 8.1.10 as I only have a production server. Anyone else?
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [February 25, 2018, 5:14pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/9 "2018-02-25T17:14:28Z")
I can verify that it is not only a JWPlayer compatability issue as we use Wowza player.
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [February 26, 2018, 5:51pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/10 "2018-02-26T17:51:10Z")
Official response from wowza support…
_"Thank you for contacting Wowza support._
_We are actively working on a fix for this and will keep you informed of any progress. Thanks for your patience in this matter._
_Note that one workaround for now is to only provide DVR playback of a single stream (i.e. don’t prefix the stream with ngrp: and just reference the stream or one of the transcoded streams in your playback URL). I understand this isn’t ideal but it should provide you with a working stream while we continue to investigate and resolve this issue."_
So, with this update, you can pick DVR or MBR streaming. You can’t have both!
My fix was to uninstall 4.7.4 (going back to 4.7.1).
I think it’s crazy that they still even offer such a broken “update” knowing that it is flawed.
---
### Author:  [@Michael\_Holt1](https://community.wowza.com/u/Michael_Holt1)
#### Post date: [March 1, 2018, 7:31am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/11 "2018-03-01T07:31:47Z")
Do we all need to open tickets?
---
### Author:  [@Michael\_Holt1](https://community.wowza.com/u/Michael_Holt1)
#### Post date: [March 1, 2018, 7:33am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/12 "2018-03-01T07:33:35Z")
I think that’s a crazy answer to remove functionality in order to make an update work.
---
### Author:  [@Jermaine\_Hemby](https://community.wowza.com/u/Jermaine_Hemby)
#### Post date: [March 3, 2018, 3:59pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/13 "2018-03-03T15:59:23Z")
Hello,
Thanks for the +1s.
This is a known issue and we are actively working on this. No timeline on resolution, but be on the look out for an update that will resolve this:
[https://www.wowza.com/docs/wowza-streaming-engine-software-updates](https://www.wowza.com/docs/wowza-streaming-engine-software-updates)
Once it is released, I will also update this thread.
regards,
Jermaine
---
### Author:  [@Kristian\_Borgen1](https://community.wowza.com/u/Kristian_Borgen1)
#### Post date: [March 14, 2018, 12:15pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/14 "2018-03-14T12:15:54Z")
Actively working on ? Why no update for over 11 days… I will say that this is a major bug…
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [March 14, 2018, 1:53pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/15 "2018-03-14T13:53:53Z")
my update… wowza sent me patched update to fix the issue (via support ticket). It actually made things worse! MBR streaming didn’t work at all. So once again, I’m back at 4.7.1.
---
### Author:  [@Kristian\_Borgen](https://community.wowza.com/u/Kristian_Borgen)
#### Post date: [April 12, 2018, 8:55am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/16 "2018-04-12T08:55:11Z")
4.7.5 is out - Anyone tested if this still is a problem ?
---
### Author:  [@Carey\_Williamson1](https://community.wowza.com/u/Carey_Williamson1)
#### Post date: [April 23, 2018, 2:36pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/17 "2018-04-23T14:36:25Z")
I have not tried 4.7.5 yet and I’m also interested if it fixed this issue for anyone else. I really do not want to be Wowza’s guinea pig!
---
### Author:  [@Stephen\_Shaw](https://community.wowza.com/u/Stephen_Shaw)
#### Post date: [March 5, 2020, 11:34am UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/18 "2020-03-05T11:34:07Z")
Hi,
Has this been fixed in 4.7.8?
---
### Author:  [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)
#### Post date: [March 5, 2020, 6:04pm UTC](https://community.wowza.com/t/ndvr-chunklist-404-not-found/50772/19 "2020-03-05T18:04:13Z")
This appears to be an alignment issue with the adaptive bitrate streams. When too far out of alignment, nDVR fails to find the correct chunk resulting in the 404 messages seen. As stated in this thread, this does not occur with single bitrate streams and does not occur with adaptive bitrate streams that are not using the nDVR functionality. Adding the following Properties has helped for some customers experiencing this problem.
```auto
Path: /Root/Application/DVR
Name: dvrMbrMinimumPacketTimeGapSize
Value: [SameAsChunkDurationForNDVR]
Type: Integer
```
```auto
Path: /Root/Application/DVR
Name: dvrMbrMinimumUtcTimeGapSize
Value: [SameAsChunkDurationForNDVR]
Type: Integer
```
If you have not edited the nDVR chunk duration, the value can be set as 2000 (milliseconds) for both properties.
If your issue continues, it’s strongly recommended that you open a [support ticket](https://www.wowza.com/support/open-ticket) as differences to your configuration may change the advice provided.