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 7.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct
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<Marth64> fate is failing for anyone else on TEST acodec-pcm-s16le ?
<elenril> no
<Marth64> hm
<Marth64> wrong sample dir .. oops
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<jdarnley> Marth64: last night I found that the dvd demuxer only showed 4 out of 5 chapters for a title as reported by lsdvd. I'll see if I can make a better bug report later.
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<cone-345> ffmpeg Martin Storsjö release/7.1:0b5559378b1e: libavcodec: x86: Remove an explicit include of config.asm
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<bcheng> Lynne: by my reading it's only required if you create an image view with aspectMask = COLOR and usage contains SAMPLED
<Lynne> bcheng: if you get rid of it, the validation layer will yell at you
<Lynne> I brought this up before the decoding spec was finialized, but there was no time to change anything, and it was part of the cursed ycbcr images spec anyway
<Lynne> what we do isn't even fully correct, the sampler has to be known and given at image creation time IIRC, but what we do is enough to shut the layer up
<bcheng> hm I'll have a try at removing it
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<Marth64> jdarnley: thanks. did it get all the content but miss the marker?
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<Marth64> also try with -preindex 1 if you can
<bcheng> Lynne: I don't get any new validation errors by removing that flag. but let me check with radv
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<jdarnley> Marth64: yes I think so. Is that an option for skipping (or not skipping) 0-length chapters? I think they were all at least 1 second, or 1 minute. I'll try it later anyway.
<Marth64> jdarnley: skipping 0-length chapters is built in automatically. the -preindex option is to yield accurate chapter markers, since dvdnav does not return pts exact markers (it may seem like it when seeking in vlc or mpv but that is a side effect of the seeking and not the actual times reported)
<jdarnley> I see. So it isn't reading them from whatever source lsdvd is?
<Marth64> when using -preindex 1 it will walk the whole disc and get exact pts from the nav packets. when off (default), it will lean on dvdnav's chapter functions of which lsdvd does a very similar lookup
<Marth64> i have also fixed some issues in the v3 patch set on the ML if you have time to try some time. thank you again
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<Marth64> if it was a 1 second chapter, likely it was a padding cell (which also gets removed because these can mess with the video params and put bogus info). but one can disable the skipping with -trim 0
<Marth64> a very popular dvd demuxer does the same thing, only the preindexing is faster because they jump directly to nav packets rather than reading the whole disc. i am working on a patch for libdvdnav to allow this speed gain
<Marth64> i have studied all of them and each has a major fault. the most popular one is good but it strips closed captions
<Marth64> i'm aiming to have the best demuxer for the long term
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<elenril> one dvd handler to rule them all
<Marth64> yess
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<Marth64> and a bdmv one on the way
<bcheng> Lynne: sent a patch. You only need to provide the ycbcr conversion sampler if you make the image with SAMPLED, and the image view with aspectMask = COLOR (in which case you are indeed converting to RGB)
<bcheng> For (dedicated) DPB images you aren't ever sampling the images, so there's no need for it
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<cone-455> ffmpeg James Almer master:3290692d185e: avcodec/hevc/ps: return a proper error code when we don't support parsing an sps
<cone-455> ffmpeg James Almer master:bd6283342c85: avcodec/hevc/ps: add a range check for sps_max_sub_layers
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<Marth64> bdmv demuxer is feature complete. I will work on docs and some code cleanup and send to ML. marking AVFMT_EXPERIMENTAL for now
<Marth64> will circle back on providing user listing of titles as DVD will need same problem solved
<Marth64> have not tested with uhd unfortunately but it should be fine
<Lynne> why experimental?
<Marth64> i just was thinking to give it some time to mature and see how it handles different samples. even with DVD it took me a long time to realize subtle fixes needed and weird encoders being out there.
<Lynne> bcheng: could you remove the remnants of yuv_sampler too?
<Lynne> the same code is ran for encoding too, so you can rip it out of there too
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<bcheng> Lynne: I didn't look into it too much but I saw the bwdif thing (which I assume operates on decode output) uses combined image sampler, which actually does require yuv conversion
<bcheng> does bwdif actually need yuv conversion? if not I think you can avoid yuv_sampler all together. you can create image views for each plane separately
<cone-455> ffmpeg Lynne master:c982376076b6: vulkan: extend ff_vk_shader_rep_fmt to be useful for bitexactness
<cone-455> ffmpeg Lynne master:1addd0fdca14: vulkan: use correct signed image type for storage images
<cone-455> ffmpeg Lynne master:d55a3517419b: hwcontext_vulkan: add support for AV_PIX_FMT_RGBAF32
<cone-455> ffmpeg Lynne master:168e8ae9bf02: hwcontext_vulkan: add support for AV_PIX_FMT_RGBF32
<cone-455> ffmpeg Lynne master:8c47cf9eeaca: hwcontext_vulkan: enable shaderBufferInt64Atomics if supported
<Lynne> bcheng: no, we never use yuv samplers (we cannot, as we don't know what kind of sampler will be used during image creation)
<Lynne> (also because I have a distrust of drivers to get basic stuff like mark formats as supported for encode/decode, let alone get colorspace conversions right)
<Lynne> combined image samplers don't require yuv conversions if you always use single-plane representation of images
<Lynne> VK_IMAGE_ASPECT_PLANE_0/1/2_BIT, etc.
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<cone-455> ffmpeg Lynne master:0e19b05375cf: vulkan: fix layout qualifiers for 32-bit RGBA float storage reps
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<jdarnley> "Indexing chapter markers, this will take a long time." Indeed it took 10 minutes.
<jdarnley> but it did find the last chapter. I'll find those patches on the list and see what changes.