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Avidemux Forum

Avidemux => Main version 2.6 => Topic started by: Hushpower on February 09, 2024, 02:59:23 PM

Title: File>File Info Colour Primary Shows BT709 for a BT601 file
Post by: Hushpower on February 09, 2024, 02:59:23 PM
Minor bug, V2.8 is reporting BT709 for a BT601 file. Sample file attached via Google Drive:

https://drive.google.com/file/d/1Y318FdUbN4IB0x42mdkXr2VG7RL8u4SU/view?usp=sharing
Title: Re: File>File Info Colour Primary Shows BT709 for a BT601 file
Post by: szlldm on February 09, 2024, 07:38:23 PM
Unfortunately the file does not contain any colour related metadata (not shown even in Mediainfo), therefore Avidemux defaults to BT.709
Title: Re: File>File Info Colour Primary Shows BT709 for a BT601 file
Post by: eumagga0x2a on February 09, 2024, 09:45:40 PM
mpv guesses colorspace as BT.601 (https://github.com/mpv-player/mpv/blob/master/video/csputils.c#L147) in a slightly more advanced way than Avidemux assumes BT.709 in absense of colorspace info from codec or container. Neither ffplay nor vlc print anything regarding colorspace in their verbose output.
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