The ISO file format is an excellent file type for data storage and backup, especially suited to backup media like DVD's. Got some DVD ISO image files and want to play them using Plex? The point here, Plex doesn't support ISO format streaming. Plex also makes it clear in its supported sources list - "Plex does not support the use of ISO, IMG, Video_TS, or other "disk image" formats." Fortunately, there is a quick workaround to fix the issue. If you wish to use ISO files with Plex, it's recommended that you convert them to a compatible format with Plex. If you have no idea about this, here is simple tutorial for you, guaranteed to stream and play ISO files via Plex without any trouble.


Why Plex Doesn't Support ISO Image Format for Playback?

ISO image file is an archive file of an optical disc. It is a sector-by-sector copy of the source DVD or Blu-ray by specific disk imaging software, and it contains all written contents from an optical disc and owns large file size - almost the same file size as original DVD or Blu-ray disc. ISO image files hide content behind built-in menu systems. Not only would the menus add extra UI that a user would need to wade through to get to the content, but there also simply isn't any good way that they could be presented in the myriad different Plex apps that are available – from iOS to Android, from the web browser to the Roku. It just isn't feasible to try and present a DVD menu type interface in some of the devices.

Simply put, ISO formats and other similar disk image formats like Video_TS, BDMV just don't fit into the idea behind the Plex ecosystem. If you wish to use ISO image files with Plex, you should convert ISO to MP4, MKV or other Plex compatible formats.

Best Tool to Convert DVD ISO to Plex Video with Good Quality-Size Balance

There is a long list of conversion programs and tools available. But if you don't want to be held back by slow processing and poor output quality, here we sincrely recommend EaseFab DVD Ripper. With it, you can convert ISO, Video_TS folder and any movie DVD disc to Plex compatible video formats in just 3 simple steps. Powered by Intel® (QSV), NVIDIA® (CUDA) and AMD, together with the support for multi-core processor, EaseFab DVD Ripper could accelerate disc reading, loading, and processing at super-fast speed. Also, its high quality technology can help you get nearly original quality after ISO to Plex conversion.

Furthermore, it owns 400+ profiles for converting ISO image to MP4/AVI/MOV for playback on devices easily and is built with powerful decryption technology for (DVD region code, UOPs, CSS encryption, Disney's fake etc.) copy protected ISO images and encrypted movie DVDs, even those Disney DVD movies with X-project DRM.

How Can I Convert ISO to Plex Playable Video with Quality, Size, and Speed Well Balanced?

What's the best video format for converting ISO to Plex?

To convert ISO movies for playback thru Plex, we'll need to know what's the best video format for Plex, MKV, MP4 or something else? Plex is officially claimed that its supported video is typically though not necessarily restricted to MP4 format. Also, it is announced that formats like ASF, MKV, MOV and AVI, etc. can be played if they are uploaded to Plex. However, if you want a smooth playback with minimum buffering, you have to take consideration of both format feature and device compatibility.

MKV and MP4 are both container foramt. In terms of container format features, MKV is an open-source container format that can hold any video codec and audio codec, while MP4 is limited to the codec specified by the MPEG standard. Moreover, MKV supports storing multiple video and audio tracks, chapter and subtitles.

As far as container format support by other software and device goes, MP4 is a better option. It created by an international organization Motion Pictures Expert Group that is responsible for setting the industry standards regarding digital audio and video. Yet, MKV is a royalty-free open standard for techinical use. That is to say, MP4 is more widely supported for commercial purpose than MKV.

Therfore, It is recommend you to convert ISO to Plex supported MP4 videos for storage in the lowest standard provided below to yield the best playback result for Plex streaming.

Container: MP4
Video codec: H.264 or H.265
Resolution: 480p/720p/1080p/UHD (Depending on the resolution of source file)
Audio track: Stereo AAC
Aspect ratio: 16:9

Tips: hardware and speed of the internet may also influence streaming across devices.

Simple Steps to Convert ISO to MP4 for Plex Streaming

1. Import ISO image file

Run the program and you will see its interface is as below: quite simple. Then click IFO/ISO button to import the source ISO files to the program. Alternatively, you can click the arrow on the right of the "Load DVD" button, and then select "Load DVD ISO Files" to load ISO files. As you can see, DVD folder and IFO are also well supported.

add iso image files

2. Convert ISO to Plex MP4 in the Best Quality

Click Profile and choose MP4 video from Common Video, which can be recognized by Plex well. MKV is also a good choice; as a container format it takes whatever you give it.

select mp4 for iso to plex conversion

Tech details:

1. To get the best possible output quality and smallest file size, convert ISO to HEVC MP4. It has 50% smaller size at the same quality. But please not that not all devices can support HEVC MP4 playback. Please check if your device is compatible with HEVC encoded MP4 videos.
2. The default setting works well. Of course, if you want to customize video and audio encoding settings, just click the Settings button to customize these settings.

Recommended settings:

1. You're not suggested to adjust the frame rate and aspect ratio, if not necessary.
2. Use the codec H.264 or H.265 and lower the bitrate to a lower level. For example, adjusting the original 2500 to bitrates of around 1800-2000 is acceptable without noticeable pixellation.
3. Lower the resolution. Typical DVD ISO movies are 720×480 (NTSC) and 720×540 (PAL). Adjust the resolution to 640×480 won't make any quality difference.

Please note: Adjusting these variables have some effect on the re-encoded video quality. Remember the file size and video quality is based more on bitrate than resolution which means bitrate higher results in big file size, and lower visible quality loss.

Advanced Settings for ISO to HEVC MP4

3. Start the conversion

Now you've come to the last step: click the Convert button to let the program start the ISO to Plex MP4 conversion. It may take a while for the whole conversion process. When it completes, click "Open" to quickly find the converted movies. Then, Plex will recognize, catalog, play and stream these converted MP4 videos from DVD ISO files at ease.

Final Words:

As you see, with just a few clicks, the ISO to Plex MP4 converting process completes. Now, you get smaller file size and more convenient playback control on your movie files thru Plex Media Server. Besides ISO image files, you can also use the easy-to-use yet powerful program - EaseFab DVD Ripper to turn your DVD dics and Video_TS folder into digital video files. If you also have some movies stored in Blu-ray discs or BDMV folder, then you're recommended to adopt EaseFab Blu-ray Ripper ( can handle both Blu-ray and DVD files) for help.