Low frame rate video
Video at a low, constant frame rate, as security cameras and screen recorders write.
How it should play
What a broken player shows
What goes wrong
Frames are dropped, stretched or shown late, and the last one goes missing.
The file
- Container
- MP4, 6 s
- Size
- 2.9 MB
- Video
- H.264, 1920x1080, 10 fps
- Audio
- AAC, stereo, 48,000 Hz
- Expected
- plays correctly in any player
How it was verified
Built by the testsrc generator (gen v0.2) and verified with FFmpeg 7.1.5-0+deb13u1 and GStreamer 1.26.2 in snapshot 2026-11-02, before it was published: the file has the property this page describes, and decoding it gives the expected result.
With a token: the file, how exactly it was built, the full fact sheet, and the expected result the checker judges a player against.
Use it
# the public facts curl https://testsrc.com/v1/cases/edge/low-fps-10.mp4 # the full fact sheet and the file, with your token curl -H "Authorization: Bearer $TESTSRC_TOKEN" \ https://testsrc.com/v1/cases/edge/low-fps-10.mp4/facts curl -H "Authorization: Bearer $TESTSRC_TOKEN" -o low-fps-10.mp4 \ https://testsrc.com/v1/files/edge/low-fps-10.mp4 # play it through your player and check what it showed testsrc run --player libvlc edge/low-fps-10.mp4
See the API reference for tokens, quotas and snapshots.
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Get early accessMore on frame rate and frames
- One picture for the whole videoMP4Nothing is shown, the duration is wrong, or seeking fails.
- Variable frame rate screen recordingMP4Frames are dropped or held where the rate changes, and audio and video drift apart.
2 more cases on this with a token.