If your vMix broadcast is already live, adding another video is a change to vMix’s playback queue, not an edit to a YouTube playlist. You may be able to make that queue change without restarting the YouTube connection, but vMix’s documentation does not guarantee that edits made during playback will be interruption-free.
Use PlayList when you want to sequence separate vMix inputs with item-level durations and transitions. Use List when you want a set of video or audio files to behave as one vMix input. For a production channel, prepare and test the queue before going on air; treat a live change as version- and configuration-specific until you have verified it off-air.
Choose PlayList or List
The wording “YouTube playlist” can mean two different things. YouTube Live is the destination receiving the broadcast. The sequence of clips that vMix sends to that destination is controlled in vMix. YouTube’s connection setup and vMix’s playback controls are separate parts of the workflow, as the vMix YouTube Live guide and its Stream Now instructions illustrate.
Within vMix, choose PlayList if each clip is already a vMix input and you want to organise the order in which those inputs are selected. It is useful when you need to set a duration, transition, transition time, or starting position for each item. For example, a local news loop might move between a title card, a recorded bulletin, and a weather input, with a different transition at each change.
Choose List when your material is a collection of media files that should be played through one input. The vMix guide describes adding, editing and removing files in the List editing tab, with playback options such as Auto Next and Loop. The documented approach can avoid loading every video into vMix as a separate input at once, which may suit a long collection of devotional recordings or study lessons.
| Your requirement | Feature to consider | Main trade-off |
|---|---|---|
| Sequence distinct vMix inputs and set item playback options | PlayList | You manage a sequence of inputs, with Next and Previous controls and Manual Mode. |
| Play multiple video or audio files through one input | List | You edit a file list and use its own playback options, including Auto Next and Loop. |
| Send the live programme to YouTube | YouTube Live destination or stream-key workflow | This establishes the live connection; it does not choose or sequence the vMix content. |
Neither feature should be treated as a promise that a running queue can be edited without affecting the output. The official material explains how the controls work, but does not establish a universal safe-live-edit procedure. If you are choosing software for a prerecorded loop, this guide to software for looping videos on YouTube Live gives broader context, while the actual control of a vMix queue remains inside vMix.
Open the vMix playlist controls
If PlayList fits your workflow, open its controls from the PlayList area in vMix. The documented route is the cog beside the PlayList control, which opens the PlayList window. You can then inspect the available inputs and the playlist items already in the sequence.
Before changing anything, identify what is currently on programme output and whether the playlist is advancing automatically or under manual control. Make a note of the current item and the intended position for the new video. This small check avoids a common operational mistake: adding a clip successfully, but placing it somewhere other than the point at which you expected it to play.
If the control is not visible where you expect it, consult the help for the exact vMix version in use. Interface layout and available controls can differ by version, so do not assume a control shown in a different release behaves identically. The vMix PlayList help page describes the feature and its controls; use the guide corresponding to your installed version where possible.
A live operator should distinguish queue editing from output switching. Adding an item to a sequence does not itself mean that the item is now on air. Conversely, selecting or taking an input to programme output can change what viewers see even if the YouTube connection remains live. Keep the preview/programme indicators in view and avoid experimenting with unfamiliar buttons on the live output.
Add a video input
The PlayList window lists Available Inputs. Select the video input you want to add and use the right-arrow control to place it in the playlist. Then check the resulting order in the playlist area rather than relying on memory or on the name of the last item you selected.
If the video is not available as an input, first prepare it in vMix using your normal media-loading workflow. Check that the correct file has loaded and that it starts and plays as expected. A filename that looks right is not enough if your collection contains several versions, language tracks, or similarly named clips. A brief off-air preview can catch a black frame, wrong audio, or an unintended opening slate before an audience sees it.
After adding an item, decide whether it belongs at the end of the current sequence or needs to appear sooner. Queue position matters especially in an always-on channel: a new prayer recording might be intended for the next transition, whereas a corrected news bulletin could be useful later after the existing item finishes. If your process depends on moving or editing an item while the playlist is already running, test that specific operation with the same vMix version and configuration before relying on it on air.
For an always-on stream, it is sensible to keep a written running order outside the live controls as well. A simple note of the current item, next item, and any pending additions can help a second operator take over and reduce accidental duplicate entries. If you are operating a home-computer broadcast, the practical limits of continuous operation are also relevant; see the OBS continuous-stream settings guide for a comparison of the kinds of issues that need planning in a computer-based setup.
Set duration and transition
PlayList items can have their own playback settings. Depending on the role of the item, set its duration, transition, transition time, and starting position deliberately. A full recorded talk may need to play through, while a short holding card may have a set duration before the next item. The useful setting is the one that matches the content and the intended hand-off, not simply the value used by the previous clip.
Transitions affect what viewers see when vMix moves between items. A cut may be appropriate for a sequence of complete recorded segments; a dissolve may suit ambience or music visuals. Consider audio as well as picture. A visual transition does not automatically make two recordings’ sound levels or room tone match, so listen to the hand-off during a test.
Starting position also deserves attention. If a clip is meant to be shown from its beginning, verify that it is not queued at a point part-way through. If it is an announcement intended to start at a particular cue, confirm that cue before the item is used. Do not assume that an item added to a live queue will behave the same way as one loaded before the broadcast without testing it.
There is a trade-off between careful item-level control and a simpler file queue. PlayList lets you treat each input as a distinct programme element, but that means checking each input and its settings. List keeps several files under one input and has its own Auto Next and Loop controls; use it when the material is a straightforward file sequence and per-input transitions are not central to your workflow. The vMix user guide covers List editing and its playback options.
Use Next or Manual Mode
PlayList provides Next and Previous controls. These let an operator advance or return through the sequence deliberately. If you are supervising a live event or a channel with scheduled announcements, manual advancement can be useful because a person decides when the next item begins rather than relying only on automatic progression.
Manual Mode prevents automatic advancement until Next is clicked. That provides a clear control point, but it also means someone must be present to advance the playlist when the current item finishes. For an overnight channel with no operator, manual mode can leave the last item on air while the queue waits. For a staffed broadcast, automatic advancement can reduce repetitive work, but the sequence and each item’s duration should be checked in advance.
Think through the failure mode before choosing. If an operator misses a cue in Manual Mode, the current content may remain active longer than planned. If automatic progression is used and a clip has an unexpected duration or playback issue, the next item may arrive at an inconvenient moment. Test the actual queue, including the end of one clip and the start of the next, rather than treating the setting as a purely administrative choice.
The title question asks how to add videos “without restarting the stream”. In practice, this means avoiding a restart of the YouTube live connection if a queue edit can be completed safely in vMix. The YouTube connection can remain a distinct, already-established part of the setup; the YouTube live-stream setup guide discusses the broader distinction between a streaming service and a content sequence. It does not mean every change to a running vMix playlist is guaranteed to leave the programme output untouched.
Check the programme output
Before committing a queue change on air, confirm what viewers are currently receiving. Check the programme output, not only the preview window or the highlighted playlist row. If you have an off-air environment available, reproduce the same addition and playback transition there first. Use the same vMix version and relevant settings, because that is where you can learn whether the particular edit affects the current item, the next transition, or neither.
If you need to make a live edit without a test, choose a moment when a brief disruption would be least harmful and make sure another prepared item is available if the expected result does not occur. This is risk reduction, not a guarantee. Avoid combining several unfamiliar changes at once: add one item, verify its position, then inspect the output and the next transition before making any further adjustment.
Keep the YouTube live status separate from the vMix programme check. A live connection can still be active while the wrong vMix input is being sent, and a correctly sequenced vMix playlist does not by itself prove that YouTube is receiving the intended stream. If viewers report a frozen or incorrect picture, check the vMix output and the live connection as separate points in the path rather than assuming one controls the other.
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FAQ
Does adding a video to vMix PlayList restart the YouTube stream?
The playlist controls sequence vMix inputs, while the YouTube setup establishes the live connection. Adding an item is not the same operation as restarting that connection, but official vMix documentation does not promise that every edit to a running queue is interruption-free. Test the specific edit in your version before using it on a production broadcast.
Should I use PlayList or List for a folder of recorded programmes?
Use List when you want multiple video or audio files to play through one input and its file-list controls suit your workflow. Use PlayList when the clips are separate vMix inputs and you need per-item settings such as duration and transition. A short off-air test can reveal which arrangement is easier to operate in your actual channel.
What does Manual Mode change?
Manual Mode stops automatic playlist advancement until you click Next. It is useful when an operator needs to choose the timing of the next item, but it requires someone to be present to advance the queue. If nobody will be monitoring overnight, consider whether automatic progression is a better fit and test it.
Can YouTube sequence the videos in my vMix PlayList?
The cited YouTube Live instructions explain how to connect vMix to a live stream; they do not describe inserting or sequencing individual clips in vMix. Use vMix’s PlayList or List controls for media sequencing, and treat the YouTube connection as a separate part of the workflow.