testsrc

HEVC 4:2:2, 10-bit

edge/hevc-yuv422.mp4MP4Edge case

10-bit HEVC with 4:2:2 colour, as professional and mirrorless cameras record.

How it should play

What a broken player shows

An illustration of the symptom, not a frame from the file.

What goes wrong

Many hardware decoders only handle 4:2:0: the file is refused, falls back to slow software decoding, or shows wrong colours.

The file

Container
MP4, 6 s
Size
6.2 MB
Video
HEVC, 1920x1080, 30 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/hevc-yuv422.mp4

# the full fact sheet and the file, with your token
curl -H "Authorization: Bearer $TESTSRC_TOKEN" \
  https://testsrc.com/v1/cases/edge/hevc-yuv422.mp4/facts
curl -H "Authorization: Bearer $TESTSRC_TOKEN" -o hevc-yuv422.mp4 \
  https://testsrc.com/v1/files/edge/hevc-yuv422.mp4

# play it through your player and check what it showed
testsrc run --player libvlc edge/hevc-yuv422.mp4

See the API reference for tokens, quotas and snapshots.

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More on colour and pixel formats

6 more cases on this with a token.