#ffmpeg-devel on 2024-07-15 — irc logs at libera.irclog.whitequark.org

2024-05-26 01:34 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 7.0.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct

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00:02 <cone-957> ffmpeg Tong Wu master:affeca005a6c: mailmap: add entry for myself

00:02 <cone-957> ffmpeg Michael Niedermayer master:daf61dddc8e2: avdevice/dshow_filter: Use wcscpy_s()

00:02 <cone-957> ffmpeg Michael Niedermayer master:8f74c313f190: avcodec/vvc/ctu: Simplify code at the end of pred_mode_decode()

00:02 <cone-957> ffmpeg Michael Niedermayer master:989e11acb65e: avdevice/dshow: Remove NULL check on pin

00:02 <cone-957> ffmpeg Michael Niedermayer master:2c2e72708831: avdevice/dshow: check ff_dshow_pin_ConnectionMediaType() for failure

00:02 <cone-957> ffmpeg Michael Niedermayer master:25f9211bdd61: avdevice/dshow: Cleanup also on av_log case

00:02 <cone-957> ffmpeg Michael Niedermayer master:175c19166824: avdevice/dshow: Check device_filter_unique_name before use

00:02 <cone-957> ffmpeg Michael Niedermayer master:ffba528bc636: avfilter/vf_avgblur_opencl: Use AV_VIDEO_MAX_PLANES

00:02 <cone-957> ffmpeg Michael Niedermayer master:ec18ec9fc108: avfilter/vf_bm3d: Dont round MSE2SSE to an integer

00:02 <cone-957> ffmpeg Michael Niedermayer master:19a5a8997c93: avfilter/vf_convolution_opencl: Assert that the filter name is one of the filters

00:02 <cone-957> ffmpeg Michael Niedermayer master:66d6b8033b4b: avcodec/tiff: Check value on positive signed targets

00:02 <cone-957> ffmpeg Michael Niedermayer master:348968e9f7d8: avdevice/dshow_capture: Fix error handling in ff_dshow_##prefix##_Create()

00:02 <cone-957> ffmpeg Michael Niedermayer master:a7f5845a6c1a: avfilter: Free out on error

00:02 <cone-957> ffmpeg Michael Niedermayer master:9c8881cb3534: avcodec/mpegvideo_enc: Do not duplicate pictures on shifting

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03:00 <Marth64> Any other way to decipher an AVERROR from its numeric form? I have a -1329874258 coming. averr2str() yields only, "Error number -1329874258 occurred". coming from av_read_frame()

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03:01 <Marth64> I'm expecting an AVERROR_EOF.

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03:12 <Marth64> aha

03:12 <Marth64> https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/demux.c#L1530

03:12 <Marth64> solution to my issue i think

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04:13 <cone-564> ffmpeg Fei Wang master:246600974ff3: lavc/vaapi_{decode, av1}: Fix memory leak in fail codepath

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09:47 <cone-823> ffmpeg Gyan Doshi master:350146a1ea9d: ffmpeg: don't truncate getmaxrss value

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11:05 <AndrewSayers> Marth64: AVERROR codes are usually four-digit ASCII codes. -1329874258 == -0x4F444552 == FFERRTAG('R','E','D','O') == FFERROR_REDO

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11:17 <qwertyttyert> I convert the video file GIF animation. I set different frame values and nothing changes, the size is also the same frame rate. -framerate 2 -frame_size 2. I don't need 2 numbers, these numbers as an example, to see that nothing doesn't change. What am I doing wrong? What am I doing wrong? x264.avi 16fps to gif animation: ffmpeg -i /dev/shm/p2.avi -vcodec gif -gifimage 0 -framerate 16 -frame_size 16 /dev/shm/1.gif

11:18 <qwertyttyert> I convert the video file to GIF animation

11:19 <jdarnley> 1 - This isn;t the user support channel. 2 - what does the error message day?

11:19 <qwertyttyert> ffmpeg -i /dev/shm/p2.avi -vcodec gif -gifimage 0 -framerate 2 -frame_size 2 /dev/shm/1.gif

11:21 <qwertyttyert> ffmpeg -h full

11:21 <qwertyttyert> gif

11:25 <qwertyttyert> There are no errors converting with different settings the same gif file.

11:26 <qwertyttyert> There are no errors converting with different settings, the same gif file.

11:29 <qwertyttyert> With different options numbers, the same GIF file is obtained. The size does not change.

11:30 <BtbN> Still the wrong channel, and lacking any useful information to work with.

11:30 <jdarnley> okay fine I'll bite

11:30 <jdarnley> What do you expect to happen?

11:31 <qwertyttyert> #ffmpeg need registration

11:32 <jdarnley> What do you *want* to happen?

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11:34 <jdarnley> Are you trying to reduce the frame rate to 2fps?

11:38 <qwertyttyert> -framerate <video_rate> .D......... set the video framerate (default "25") Does this option adjust the frame rate for the resulting animated file? I want to reduce the size of the gif file. One way to reduce the size is to reduce the number of frames.

11:40 <qwertyttyert> "-framerate" not working

11:40 <jdarnley> no because that option doesn't apply to the avi demuxer nor the h264 decoder

11:40 <qwertyttyert> and "-frame_size" not working

11:42 <jdarnley> If you want to reduce the frame rate then use the right option which is -r

11:45 <jdarnley> -frame_size is an audio option anyway

11:48 <qwertyttyert> is it only with h264,x264,AVC and AVI container? Changing the codec and container is not a problem for me.

11:53 <qwertyttyert> I often use x264 in the lossless compression variant. The x264 file is smaller with lossless compression than other codecs. VP9 has not tested how lossless compression, and will most likely compress more slowly.

11:54 <jdarnley> Is what only with what?

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11:55 <qwertyttyert> I didn't understand the question

11:57 <jdarnley> nor did I

11:58 <qwertyttyert> "-frame_size <int> .D......... force frame size in bytes (from 0 to INT_MAX) (default 0)" - unwritten what it for audio

12:01 <jdarnley> fuck you ffmpeg and your overloaded options

12:01 <jdarnley> But again that is not for the avi demuxer

12:03 <jdarnley> Besides what would that mean?

12:05 <qwertyttyert> Fffmpeg -i /dev/shm/FFV1.mkv(16fps) -vcodec gif -gifimage 0 -framerate 2 /dev/shm/1.gif nothing has changed

12:05 <jdarnley> God dammit! Read what I fucking write!

12:06 * jdarnley pisses off to lunch

12:08 <qwertyttyert> It's not that simple. I translate through translators websites.

12:12 <qwertyttyert> "If you want to reduce the frame rate then use the right option which is -r" I didn't translate it, I forgot to translate it.

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12:24 <qwertyttyert> -r is a common setting for all codecs? I looked through all the settings in the description of the gif about the settings -r, nothing is not written.

12:29 <qwertyttyert> yes -r is a common setting for all video codecs.

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12:32 <qwertyttyert> Oh! and for gif, gif animation not video.

12:40 <qwertyttyert> I was looking for gif in the settings for gif, and didn't think to use -r as with video encoding.

12:41 <qwertyttyert> figured it out

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13:45 <thardin> "[PATCH v21] avformat: add farbfeld muxer and demuxer" I'm impressed such a simple format can go through 20 revisions

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13:52 <Lynne> IndecisiveTurtle: right, you did miss a few messages

13:53 <Lynne> yeah, you'll need a bitstream writer in a shader, but definitely don't copy put_bits

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13:54 <Lynne> you can write one in 5 minutes, just shift + or bits into a variable, then write it out to a buffer once its full

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13:58 <IndecisiveTurtle> Lynne: Thanks. I will also try to switch IRC client, Halloy seems to disconnect sometimes when it feels like it

13:58 <IndecisiveTurtle> Any other message I missed?

13:58 <Lynne> no, that was it

13:59 <Lynne> did you manage to get the ff_vk framework working and submitting?

14:05 <IndecisiveTurtle> I suspected it was a missing ff_vk_exec_add_dep_frame but it wasn't it. Will try again this evening it is probably something stupid deadlocking it. It submits fine but the moment you wait for it nothing

14:10 <IndecisiveTurtle> This week in general my goal is to get it fully running and ensure the basics like haar wavelet and encoding work so can spent remaining time adding additional wavelets and testing against reference vc2 encoder

14:11 <Sean_McG> thardin: in general, I've been more than irritated by how many revisions some patchsets go through

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14:30 <Lynne> IndecisiveTurtle: have you made sure to init everything properly?

14:31 <Lynne> try comparing with https://github.com/cyanreg/ldpc_matrix_opt/blob/master/src/main.c#L69

14:33 <IndecisiveTurtle> Looks correct to me

14:34 <IndecisiveTurtle> I did in order

14:34 <IndecisiveTurtle> vkctx->frames_ref = av_buffer_ref(avctx->hw_frames_ctx);

14:34 <IndecisiveTurtle> vkctx->frames = (AVHWFramesContext *)vkctx->frames_ref->data;

14:34 <IndecisiveTurtle> vkctx->hwfc = vkctx->frames->hwctx;

14:34 <IndecisiveTurtle> vkctx->device = (AVHWDeviceContext *)vkctx->frames->device_ref->data;

14:34 <IndecisiveTurtle> vkctx->hwctx = vkctx->device->hwctx;

14:34 <IndecisiveTurtle> vkctx->extensions = ff_vk_extensions_to_mask(vkctx->hwctx->enabled_dev_extensions, vkctx->hwctx->nb_enabled_dev_extensions);

14:34 <IndecisiveTurtle> ff_vk_load_functions(vkctx->device, &vkctx->vkfn, vkctx->extensions, 1, 1);

14:34 <Sean_McG> please use pastebins for large output

14:34 <IndecisiveTurtle> ff_vk_load_props(vkctx);

14:35 <IndecisiveTurtle> Sean_McG: Oh very sorry, will do next time

14:35 <IndecisiveTurtle> That ff_vk_load_props I added because it couldn't create buffers for some reason and found it hadn't loaded props and couldn't select appropriate memory type

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14:41 <Lynne> do you call ff_vk_exec_pool_init?

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14:42 <IndecisiveTurtle> Yes a bit below

14:43 <IndecisiveTurtle> And ff_vk_qf_init rigth before it

14:43 <Lynne> what command line do you use?

14:44 <IndecisiveTurtle> ./ffmpeg -init_hw_device vulkan=vk:0 -i well.mp4 -filter_hw_device vk -vf format=yuv444p,hwupload -c:v vc2_vulkan -y well.vc2

14:46 <IndecisiveTurtle> I tried using vkconfig to force on validation layers and I didn't see anything interesting that could make a cmdlist be stuck forever. I will try again though

14:46 <Lynne> maybe you're doing something nasty in the shader and the GPU crashes or similar

14:47 <Lynne> try skipping everything in the shader to check if it runs

14:48 <IndecisiveTurtle> Will try

14:48 <IndecisiveTurtle> It's that probably, will verify I didn't miss setting DBA pointer first and then try to run them on the haar test demo to get more specific results

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14:49 <IndecisiveTurtle> Stepping through in encoding in ffmpeg is a bit annoying as random threads will take away the debuggers attension anytime, idk if thats a problem specific to my setup

14:50 <Lynne> you can compile without threads

14:50 <Lynne> but yeah, that sounds like an issue on your end

14:51 <Lynne> or run with -t 1

14:52 <IndecisiveTurtle> I saw it especially when I run the cpu vc2 encoder to take values for the quant shader. It seems to use a threadpool of num_x*num_y threads and the same breakpoint got hit maaany times

14:52 <IndecisiveTurtle> Thanks will try it

14:56 <IndecisiveTurtle> Lynne: I wrote a quick bit stream without using put_bit in ffmpeg, does it look okay https://pastebin.com/qmX1JhNA

14:58 <Lynne> you need to reset bit_pos

14:59 <Lynne> you don't really need put_byte or put_dword, pretty much universally if there's a bit to bytestream switch happening, the stream gets byte-aligned

15:07 <IndecisiveTurtle> Ah missed that

15:08 <IndecisiveTurtle> For the other functions, in encode_subband there is a look with the c_abs branch that conditionally puts a single bit to the stream. Does that get byte aligned too?

15:09 <Lynne> no, why would it?

15:09 <Marth64> AndrewSayers: thanks!

15:09 <IndecisiveTurtle> Then I misunderstood what you meant by "bit to bytestream switch"

15:11 <IndecisiveTurtle> So instead of having 3 functions there should be a single put_bits function that takes variable number of bits to place in bitstream

15:14 <Lynne> yup, pretty much that's all you need in the shader

15:14 <Lynne> plus a function to flush the buffer

15:23 <IndecisiveTurtle> Makes sense

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17:47 <courmisch> I feel like my review comments are being ignored

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19:42 <cone-890> ffmpeg James Almer master:5fe13aeb6552: avcodec/cbs_h265: fix range of sps_max_sub_layers_minus1

19:42 <cone-890> ffmpeg James Almer master:41211edc1b05: avcodec/cbs_h265: add support for SPS Multilayer extension fields

19:42 <cone-890> ffmpeg James Almer master:64807ccc9191: avcodec/cbs_h265: add support for PPS Multilayer extension fields

19:42 <cone-890> ffmpeg James Almer master:25138fa0f367: avcodec/cbs_h265: reindent after the previous commit

19:42 <cone-890> ffmpeg James Almer master:27eb55a9c91b: avcodec/cbs_h265: add support for 3D Reference Displays Information SEI

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21:23 <cone-890> ffmpeg James Almer master:5d74dcf0e3ed: fate/lavf-container: add a test for L-HEVC remuxing

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