Exporting video leads to empty tar/zip file

[maretodoric]

Describe Your Environment

• Version of ZoneMinder [release version, development version, or commit]: 1.36.5
• How you installed ZoneMinder [e.g. PPA, RPMFusion, from-source, etc]: RPMFusion
• Full name and version of OS: CentOS 8 (CentOS Linux release 8.2.2004 (Core))
• Browser name and version (if this is an issue with the web interface): Google Chrome 92.0.4515.107

Describe the bug
I have an archived video(s) that i would like to download. I go to Filters -> Search for archived videos -> Select -> Click on download then click on "Generate Download"
I will briefly wait for data to be exported then i get an almost empty zip file.
It will contain folder named "zmExport_207327"
zmFileList.txt file containing:

zmExport207327/zmEventImagesMaster.html
/var/lib/zoneminder/temp/zmExport_207327/zmFileList.txt

And empty folders named with event ID (for example 65896)
No video files anywhere.

To Reproduce
Steps to reproduce the behavior:

1. Go to main page
2. Click on 'Filters '
3. Archive Status equal to Archived Only
4. Click on 'List Matches'
5. Select video to export
6. Click on "Download Video"
7. Click on "GENERATE DOWNLOAD"

Expected behavior
A zip file containing video should be downloaded

Debug Logs
Please advise how to extract debug logs

[welcome]

Thanks for opening your first issue here! Just a reminder, this forum is for Bug Reports only. Be sure to follow the issue template!

[connortechnology]

Please update to 1.36.7 and let us know if the issue is fixed. In 1.36.6 we updated a lot of the export/downloading code.

I was never able to reproduce this bug, but may have fixed it anyways.

[tommysnello]

i have the same issue with zoneminder 1.36.7 and ubuntu 20.04

[jorioux]

Same issue here with 1.36.9 on ubuntu 21.10.
I've enabled OPT_FFMPEG, and ffmpeg is installed on ubuntu.

[Vic-Y]

{Thank you to developers who contribute to ZM!}

I found the same/similar problem running ZM 1.36.10 on Ubuntu 20.04 LTS. Downloading video generates a ZIP or TAR file containing folders and files as described by OP and missing the video. I was not filtering for archived events though, just listed events for past day.

If I view a single event, then I the download video button works. However, I would like to download multiple events, which is where the ZIP file is broken.

[PX03AFK]

I have just run into the same issue with 1.37.3. Tar file exports but has multiple empty folders, zip file fails.

[connortechnology]

Update, as you can see above it was fixed a long time ago.

[PX03AFK]

I have just checked the script which was updated for the fix and I can see that this is the update applied in November 2021. The history for this script indicates that there have been a few more updates since that one but nothing to suggest any further fix for the problem as described. If it really is fixed can you help me establish why I have the problem. What evidence can I collect?

[PX03AFK]

Sorry, should have been clear, the Nov 2021 version is the one included in 1.37.3 and is the one I am running.

[connortechnology]

We need the web_php.log from doing the export. Perhaps turn on debugging first.

[PX03AFK]

I've turned on Log_Debug and changed Log_Debug_Level to 9 with no component specified and nothing in the web_php.log. Then I changed Log_Level_Weblog to debug but still nothing. I even tried specifying _web as a component. I've also restarted ZM with debug set on.

I did, however, sort out the problem trying export as a zip file. zip wasn't installed!