▶ Support intro Nextcloud version (eg, 12.0.2): 13.0.4 Operating system and version (eg, Ubuntu 17.04): CentOS 7 Apache or nginx version (eg, Apache 2.4.25): Nginx 1.15.0 PHP version (eg, 7.1): 7.2.6 The issue you are facing: I can’t have previews (thumbnails) from video .mp4 files. I think I h…

[image] MeiRos: I have set preview generator to pre-generate previews, but no help. You need to install ffmpeg and add the path to ffmpeg to the environment so that Nextcloud can find it.

Here’s a line from access log: [04/Jul/2018:15:43:54 +0000] “GET /index.php/apps/files/api/v1/thumbnail/512/512/Nextcloud.mp4 HTTP/1.1” 404 29 “-” “Mozilla/5.0 (Android) ownCloud-android/3.2.1 RC1” At the Play Store there are video previews on the example pics. Where are my thumbnails…? Can some…

Hi, Sorry, I can’t help. I don’t have previews either. Maybe it is a limitation with or of MP4.

@Sanook Thanks a lot for that link! That helped indeed with the preview images. Do you have an idea as well for, how to be able to play all mp4 files in the NC video player? It is strange, that some mp4 files can be played, but others can’t. I know that the browser needs to support specific file ty…

Probably the codec is not supported by the player. h264 is working well. [image] Schmu: 3GP files can’t be played at all what is the output of ffmpeg -i video.3gp -hide_banner or what does Mediainfo say?

Nice command, I learn a lot today :slight_smile: So it prints the following for the 3GP and one of the not-working MP4: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MOV00522.3GP': Metadata: major_brand : 3gp5 minor_version : 512 compatible_brands: vfj13gp43gp5mp42 creation_time…

[image] Schmu: Does that tell you something? Yes, seems that those codecs are not supported by the Nextcloud player. The clips need to be transcoded to h264 with AAC sound.

Thank you again! If someone is interested more deeply, here is other thread where Sanook helped me with this problem. https://help.nextcloud.com/t/thumbnail-preview-generation/34123/7