Video Debugger Online – Debug Video Playback in Real Time
Get real-time playback diagnostics for any video URL. The debug panel tracks every event — load, play, buffer, stall, error — with timestamps. Export the full log as JSON for further analysis.
How VideoLab Works
Three steps to test and debug any video stream
Paste a URL or Upload a File
Enter any MP4, M3U8, MPD, YouTube, or Vimeo URL — or drag & drop a local video file directly into the player.
Hit Play & Watch Diagnostics Update Live
The player starts streaming instantly. The debug panel tracks connection status, resolution, bitrate, codec, and every network event in real time.
Share or Export Your Debug Log
Generate a shareable URL to reproduce the exact test, or export a full JSON debug log with timestamps, errors, and stream info.
How Video Debugging Works
VideoLab attaches event listeners to the HTML5 video element for every possible playback event. As the video loads and plays, these events are logged with timestamps relative to the start of the load, giving you a complete picture of the playback lifecycle.
Reading the Error Codes
HTML5 MediaError codes: 1=ABORTED (user stopped), 2=NETWORK (connection problem), 3=DECODE (codec/corruption), 4=SRC_NOT_SUPPORTED (unsupported format). VideoLab maps these to human-readable descriptions and suggested fixes.