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OBS Media Source Freezes Between Files in a YouTube Loop: Troubleshooting

Check the right loop control, then determine whether the freeze is inside OBS or appears only on YouTube. This guide walks through source settings, diagnosis and performance checks.
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If a YouTube loop stops or freezes between videos, first check whether playback has frozen inside OBS or only on YouTube. Then verify the loop control for the source you are actually using: Loop for one file in Media Source, or Loop Playlist for a playlist in VLC Video. The distinction determines what to troubleshoot next; there is no single confirmed fix for every between-file freeze.

First identify what OBS is playing

OBS has two relevant source types, and their controls are not interchangeable. Note which source is involved, whether its media is local or remote, and whether every transition fails or only the boundary after a particular file.

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Source Typical use Loop control Requirement
Media Source One media file Loop repeats that file after it finishes. OBS documents support for formats including MP4, TS, MOV, FLV, MKV, AVI, GIF, WebM, MP3, AAC, OGG and WAV.
VLC Video A playlist of files Loop Playlist restarts the playlist after it runs out of files; OBS lists this as on by default. VLC must be installed. For 64-bit OBS, OBS documents a requirement for 64-bit VLC.

These setting descriptions are from the OBS Project’s Media Sources documentation (2022).

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Check the matching loop and playback settings

For one file in Media Source

  1. In OBS, select the scene containing the source and select the Media Source in the Sources list.
  2. Open the source’s properties and confirm that Loop is enabled if the single file should repeat.
  3. Check whether the file itself plays through to its end locally. If the problem occurs only with one file, note its format and whether the freeze begins at its boundary.

For a playlist in VLC Video

  1. Select the scene and VLC Video source, then open its properties.
  2. Confirm that the playlist contains the expected files in the intended order.
  3. Check Loop Playlist if playback should restart after the final entry.
  4. Confirm VLC is installed and that its bitness matches OBS; OBS specifies 64-bit VLC for 64-bit OBS.

Do not confuse nearby controls

  • Restart playback when source becomes active restarts a file when the source is in the current scene and visible. It does not mean “repeat when the file ends.”
  • Show nothing when playback ends hides the source after playback ends; it does not make the file repeat.
  • Close file when inactive frees memory when a source is hidden or off the current scene. Showing it again may require a short reload.
  • VLC Video’s Visibility Behaviour determines whether playback continues, pauses or stops while the source is not visible.

OBS documents a default of 400 ms for VLC Video network caching. That is a setting default, not a recommended value or a generally validated fix for a freeze between files.

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Determine whether the freeze is in OBS or on YouTube

  1. Watch the OBS preview when the transition should happen. Check whether the video advances and whether the audio meter responds as expected.
  2. If you are recording locally, inspect that recording around the transition. A recording can help distinguish a source or OBS problem from a delivery problem, but only if it captures the relevant interval.
  3. If the preview or local recording also freezes, focus on the OBS source, playlist or media input, and inspect the OBS log for relevant errors.
  4. If OBS appears healthy but YouTube playback stalls or looks wrong, check YouTube’s stream-status information and troubleshoot the encoder output and outbound connection instead.

YouTube recommends updating the encoder and checking the output directly in it. If the output is unhealthy in the encoder, investigate routed sources, encoder errors and CPU load. If the encoder output is healthy, investigate the outbound internet connection. See YouTube’s live-streaming troubleshooting guidance.

Check system load when there are performance symptoms

A file-boundary freeze alone does not establish a GPU or performance problem. Performance troubleshooting is more relevant when the transition coincides with rendering lag, dropped frames, encoder warnings or other system-wide symptoms.

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  • Review the OBS log for rendering or encoding problems around the failure.
  • Try a simpler scene by reducing complex compositions, resource-intensive sources and filters.
  • Consider whether media resolution exceeds what the canvas or output needs; OBS identifies lowering media resolution as one way to ease resource pressure.

OBS describes GPU overload and resource bottlenecks as possible reasons it cannot keep up, not as the confirmed cause of every media-source freeze. Its guidance is at OBS encoding performance troubleshooting.

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Use community reports as clues, not proof

OBS community posts include user reports of VLC freezes while playing YouTube playlists and during long streams. One forum thread is titled “VLC video source freezes after ~6 hours”; that wording describes an individual report, not a typical duration or measured failure rate. The reports do not establish a general root cause or a confirmed universal fix. See the VLC video source forum thread and another VLC media-source discussion.

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For the same reason, scheduled OBS restarts, increasing network-cache values or replacing the source should be treated as case-specific experiments, not established fixes. Change one thing at a time and check whether the same transition fails again.

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