Many people encounter problems ‘Plex not detecting AVI files’ like these:
Q: “I finally sorted out all my media on the weekend and I’m running Plex to be able to watch my stuff on my Samsung TV using smart hub. And I really have no idea in terms of the tech side of running media servers, and can only assume I have something wrong in the settings.
MP4 and MKV files work perfectly, but avi will not play. I have no idea if it’s at the media server end or at the TV where the issue is occuring however. I can play the file within Plex on my PC without trouble, but when you look at those files on the TV they are showing as 0MB and will not play. I installed PS3 media server and all works fine from there on the TV with all formats working, but I don’t like the UI for it, so would prefer to get it working with Plex.”
Plex announced that it supports wide range of media formats. If your device supports it, Plex will stream it directly. If it doesn’t, Plex will transcode it to an acceptable format for your Samsung Smart Hub TV. However, many users still can not add AVI files to Plex Media Server for smoothly playback. Basically, Plex can recognize AVI videos, well, only in the condition of compressing with the supported codec like H.264. Namely, Plex has nothing to do with those AVI files with the unmatched codec. So for the question up lines, it may be due to the codec problem.
This is not a tough problem to work out, actually. You just need to transcode AVI to a Plex-friendly format (e.g. H.264 MP4). And the article here shows you how to fix this with the professional yet easy-to-use Pavtube Video Converter Ultimate step by step. Here is review.
This video app is professional on fast converting AVI to Plex Media Server with MP4 format (the most compatible video format for Plex) without quality loss. In addition, it not only supports AVI videos, but also handles various common video formats, like MKV, WMV .MXF. MTS, MOV, MP4, etc. For Mac users, iMedia Converter for Mac is also a helpful app to encode videos for further usage.
Plus, with the built-in video editor, you can also choose to trim, crop, add watermark to your original videos. For Mac users, Brorsoft Video Converter Mac is also a helpful app to encode videos on Mac OS X (El Capitan, Yosemite, Mavericks included) for further usage.
Free Download and trail:
Other Download:
– Pavtube old official address: http://www.pavtube.cn/blu-ray-video-converter-ultimate/
– Cnet Download: http://download.cnet.com/Pavtube-Video-Converter-Ultimate/3000-2194_4-75938564.html
How to Convert AVI to Plex and play AVI files on Samsung Smart Hub TV via Plex
Step 1: Import AVI files to the program
You can directly drag the AVI files you want to convert to the main interface of this AVI to Plex Converter. All added media files can be previewed and you’re free to take snapshots of your favorite video scenes. Meanwhile, if you want to merge all the added AVI files into a single file, simply click “Merge into one file”. 
Step 2: Select output format
Click “Format” bar and choose MP4 from “Common Video” as output format, which can be recognized by Plex easily. Or ,you can choose best format for Samsung LED TV, Samsung Smart TV, Samsung 3D TV and Samsung 4K series TV. Click the drop-down button on the right side of the “Format” to select suitable formats from “TVs” Category. 
Tips: With the right settings you can retain the quality of the original videos while also saving space. This is particularly helpful when streaming over your network, depending on your network quality. Simply click Settings bar and you can tweak the settings to your satisfaction and even save it as preset.
Step 3: Start AVI to Smart Hub TV/Plex Conversion
Finally, hit the “Convert” button at the bottom of the main interface to start the conversion. It will automatically convert AVI to Plex Media Server compatible video files for Samsung Smart Hub TV.
fter the conversion, click “Open” to quickly find the converted movies. Then, Plex will recognize, catalog, play and stream these AVI files on Samsung Smart Hub TV at ease.
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