#11222: Suboptimal auto-format selection for filter-chain
-------------------------------------+-------------------------------------
Reporter: | Type:
MasterQuestionable | enhancement
Status: new | Priority: normal
Component: avfilter | Version: git-
| master
Keywords: format | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
͏ Debug output:
[graph -1 input from stream 0:0] w:725 h:725 pixfmt:argb tb:1/25 fr:25/1
sar:0/1 csp:unknown range:unknown
[format] Setting 'pix_fmts' to value 'bgra|yuv420p|yuva420p'
[format] Setting 'color_ranges' to value 'tv'
[auto_scale_0] w:iw h:ih flags:'͏' interl:0
[Parsed_nlmeans_0] auto-inserting filter 'auto_scale_0' between the filter
'graph -1 input from stream 0:0' and the filter 'Parsed_nlmeans_0'
[AVFilterGraph] query_formats: 4 queried, 6 merged, 3 already done, 0
delayed
[auto_scale_0] w:725 h:725 fmt:argb csp:gbr range:pc sar:0/1 -> w:725
h:725 fmt:yuv420p csp:unknown range:tv sar:0/1 flags:0x00000004
͏ "yuv420p" selected for RGB input..?
͏ E.g. commmand:
͏ `ffmpeg -v debug -hide_banner -nostdin -nostats -f lavfi -i "testsrc"
-vframes 1 -vf "nlmeans=1" -c:v libwebp -lossless 1 -q 100
-compression_level 6 -f null -`
͏ .
͏ Original input is WebP Lossless.
͏ Workaround is adding "[https://ffmpeg.org/ffmpeg.html#Advanced-Video-
options -pix_fmt] rgb24" alike.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11222>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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