michaelni changed the topic of #ffmpeg-devel to: Welcome to the FFmpeg development channel | Questions about using FFmpeg or developing with libav* libs should be asked in #ffmpeg | This channel is publicly logged | FFmpeg 8.0 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20628 merged: avcodec: make use of av_zero_extend() in a few modules (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20628) by j⁠amrial
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<fflogger> [editedticket] forthrin: Ticket #5789 ([avformat] Fast in-place replacement of embedded subtitles with ffmpeg) updated https://trac.ffmpeg.org/ticket/5789#comment:2
<fflogger> [editedticket] forthrin: Ticket #7755 ([ffmpeg] Fail if an output-only option is used as an input option) updated https://trac.ffmpeg.org/ticket/7755#comment:4
<fflogger> [editedticket] forthrin: Ticket #6947 ([undetermined] Unwanted visual formatting added when embedding subtitles) updated https://trac.ffmpeg.org/ticket/6947#comment:10
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20634 opened: vf_blend (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20634) by m⁠kver
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<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20350 avcodec/sanm: updates (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20350#issuecomment-11019) by m⁠lauss2
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20635 opened: Backport HTTP and RTSP fixes (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20635) by e⁠Pirat
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<ramiro> Traneptora: thanks, I'll have a look
<fjlogger> [FFmpeg/FFmpeg] Pull request #20636 opened: avcodec/x86/h263_loopfilter: Port loop filter to SSE2 (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20636) by m⁠kver
<fjlogger> [FFmpeg/FFmpeg] Pull request #20475 merged: avcodec/d3d12va_encode: D3D12 H264 encoder support (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20475) by j⁠amrial
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20475 avcodec/d3d12va_encode: D3D12 H264 encoder support (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20475#issuecomment-11038) by A⁠razIusubov
<Lynne> haasn: ping on a temperature setting in libplacebo
<fjlogger> [FFmpeg/FFmpeg] Pull request #20637 opened: Don't reset last{pts,dts} on new sequentialized ogg streams. (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20637) by t⁠oots
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20637 WIP: Don't reset last{pts,dts} on new sequentialized ogg streams. (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20637#issuecomment-11046) by G⁠yanD
<fjlogger> [FFmpeg/FFmpeg] Pull request #20327 merged: ogg/{vorbis, flac, opus}: parse comments from secondary chained streams header packet (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20327) by Y⁠alda
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<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20350 avcodec/sanm: updates (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20350#issuecomment-11052) by m⁠ichaelni
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<fjlogger> [FFmpeg/FFmpeg] New comment on issue #20614 Several fragmented MPEG4 tests fail under the scrutiny of GCC Address Sanitizer (https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/20614#issuecomment-11053) by s⁠ean_mcg
<fjlogger> [FFmpeg/FFmpeg] Issue #20614 closed: Several fragmented MPEG4 tests fail under the scrutiny of GCC Address Sanitizer (https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/20614) by s⁠ean_mcg
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<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20637 WIP: Don't reset last{pts,dts} on new sequentialized ogg streams. (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20637#issuecomment-11059) by t⁠oots
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20350 avcodec/sanm: updates (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20350#issuecomment-11061) by m⁠lauss2
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20638 opened: fftools: silence coverity race condition warning (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20638) by h⁠aasn
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20638 fftools: silence coverity race condition warning (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20638#issuecomment-11066) by h⁠aasn
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<haasn> Lynne: can you remind me what API you would expect for this?
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20638 fftools: silence coverity race condition warning (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20638#issuecomment-11068) by j⁠amrial
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20350 avcodec/sanm: updates (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20350#issuecomment-11070) by m⁠lauss2
<Lynne> haasn: just a generic setting like colorspace or contrast
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<haasn> I mean we already have a generic setting
<haasn> so do you literally just want the ability to set it in kelvin?
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<Lynne> yeah, pretty much
<Lynne> the existing setting also cannot be set via the generic option string API
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<haasn> can I recruit you to write the docs change?
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20638 fftools: silence coverity race condition warning (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20638#issuecomment-11071) by m⁠kver
<haasn> in theory it can
<haasn> :extra_opts=temperature=-1
<haasn> it's just a wonky scale
<haasn> in retrospect I regret normalizing it to -1..1
<Lynne> could you lower the minimum kelvin limit of 2500 or 3000 down to at least 1500k?
<haasn> can you find an approximation curve for getting the CIE x/y white point from the CCT for such low temperatures?
<haasn> the one we have is only accurate down to 2500K
<Lynne> the one in libplacebo looks to be accurate within 1000k to 10000k
<Lynne> though the switchover happens at 7k, whereas in what I found for the exact formula, it happens at 4k
<Lynne> the source of the estimation curve seems to be https://www.pismin.com/10.1002/col.5080100109
<Lynne> and the author does say that its reasonably accurate within 1000 to 10000k
<Lynne> *15000k
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<haasn> is that the same curve as the one we use? cba dissecting those polynomials
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<haasn> or did you mean that's a different estimation you found
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<Lynne> this is the code that ACES cites and uses
<Lynne> the kang2002 estimation says its accurate within 1667k to 25000k
<Lynne> the 2013 version goes all the way down to 1000k, but it pretty much abandons estimations and seems to just compute it altogether
<Lynne> I'm happy with 1667k min, its well within candelight
<haasn> https://en.wikipedia.org/wiki/Planckian_locus#Approximation lists what seems to be the same formula
<haasn> says it's accurate within 1000 to 15k
<haasn> to 10^-5
<haasn> that's more than enough as far as I care
<haasn> I'll update our code tomorrow, it's getting late
<Lynne> cool, thanks
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<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20510 avcodec/vvc/data: Mark tables as hidden (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20510#issuecomment-11073) by m⁠kver
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<haasn> Lynne: this formula doesn't return D65 for 6500
<haasn> it returns something completely different, CIE xy = (0.3134941075102412, 0.32366253911989207)
<haasn> D65 should be (0.31271, 0.32902)
<haasn> seems like D65 is not actually _on_ the planckian locus
<haasn> that sure would explain why we don't get it back
<haasn> maybe our old formula was "tweaked" to return the actual D illuminant series
<jamrial> BtbN: i get a "Credentials are incorrect or have expired." message on an otherwise blank page when i try to open any c.f.o link
<haasn> Lynne: ah, seems like the confusion here is daylight locus vs blackbody (planckian) locus
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<haasn> they are parallel
<haasn> Lynne: based on our documentation, we want the daylight locus, not the planckian locus
<haasn> "Computes the CIE xy chromaticity coordinates of a CIE D-series illuminant with the given correlated color temperature."
<mkver> The server seems to have issues.
<kierank> damn, I wanted to tweet about your removing MMX
<mkver> Don't.
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<mkver> It's not that important and I actually only started assembly last week, so it is very likely that my code is suboptimal and embarrassing.
<mkver> It would also attract attention to the fact that we are breaking ABI by not issuing emms in mmx functions.
<kierank> your work is excellent
* Sean_McG nodnods
<kierank> I think it's important cleanup to get rid of emms
<kierank> As it does cause problems on some systems
<jamrial> kierank: the fact we call it, or that we don't call it always where we should?
<kierank> both
<kierank> the former is less of an issue I guess
<BtbN> jamrial: it seems the server has run out of RAM. I gave it a bit more cache to MariaDB the other day. Guess I misjudged.
<kierank> lol
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<mkver> For me the problem is that we don't abide by the ABI, leading to strange issues like the one 57a29f2e7dd2374 fixed; and that emms_c gets called at places where it is unnecessary for many codecs.
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<kierank> agreed
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<haasn> Lynne: I think I will just introduce a second function
<haasn> not to break backcompat
<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20150 avcodec, avutil: Mark C globals with small code model (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20150#issuecomment-11075) by p⁠ranavk
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<kasper93> could anyone approve #20619, if it's ok? Those are small patches, don't want to keep them in limbo
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20639 opened: avformat/tls_openssl: do not cleanup tls after a successful dtls_start() (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20639) by c⁠us
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<fjlogger> [FFmpeg/FFmpeg] New comment on pull request #20600 Fix for `apad` output getting stuck issue (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20600#issuecomment-11079) by c⁠us
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<fjlogger> [FFmpeg/FFmpeg] New comment on issue #20611 ffmpeg hangs when using apad filter with a slighly wrongly muxed avi file (https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/20611#issuecomment-11081) by c⁠us
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<fjlogger> [FFmpeg/FFmpeg] Pull request #20640 opened: Cleanup packet-level BOS/EOS logic. (https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20640) by t⁠oots
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