Test Media Genaration

Test Media Doc

This doc provides testing assets that are useful for creating test tapes or testing equipment.

Creating Test TBC Files

Pick a Test Pattern

Right click --> Open In New Tab --> Save to File

EBU 75% Colour Bars	EBU 100% Colour Bars	SMPTE 75% Color Bars	SMPTE 100% HDTV Color Bars

Format Data

Convert a picture to a raw rgb48 file with ffmpeg:

ffmpeg -loop 1 -i SMPTE_Colourbars_75.png -vcodec rawvideo -t 15 -pix_fmt rgb48 928_576_rgb48.rgb

Encode Data

Run the ld-chroma-encoder:

ld-chroma-encoder 928_576_rgb48.rgb 928_576_rgb48.rgb.tbc

Then link the output .tbc file to a .u16 file so cvbs-decode knows the format of the data:

ln -s 928_576_rgb48.rgb.tbc 928_576_rgb48.rgb.tbc.u16

Decode Data

Run the output though cvbs-decode:

cvbs-decode 928_576_rgb48.rgb.tbc.u16 out/928_576_rgb48.rgb.tbc.u16 -f 4fscpal --pal

Black SNR should be in the 95~98dB range when viewed in ld-analyse.

Test Tones

1khz Sine Wave Tone

GLITZ Tone

BLITS 5.1 Lineup

BLITS 5.1 Lineup

Docs

Multichannel Audio Line-up Tones

BLITS Surround Sound Ident

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