December 2021 - Cin - Cinelerra-GG Mailing Lists

Blur plugin: Alpha determines radius
by Igor BEGHETTO 31 Dec '21

31 Dec '21

Hi! In Blur plugin there is the "Alpha determines radius" option. I think it doesn't work but I can wrong. Can someone explain to me how it works, please? Thanks! IgorBeg

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our ffv1.mkv profile
by Andrew Randrianasulu 29 Dec '21

29 Dec '21

seems to miss level=3 setting $ cat bin/ffmpeg/video/ffv1.avi avi ffv1 $ cat bin/ffmpeg/video/ffv1.mkv matroska ffv1 threads=8 context=1 slices=30 $ cat bin/ffmpeg/video/ffv1.mov mov ffv1 #coder=0 context=1 g=1 level=3 threads=16 slices=16 slicecrc=1 #pass=2 $ not sure if we should modify our avi/mkv profikes or add new (may be with _v3 name) ones?

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Uncompressed video to lossless compression FFV1/MKV
by Terje J. Hanssen 25 Dec '21

25 Dec '21

Background: Digital video produces vast amounts of data. Take PAL-SD material (only image, no audio), stored as YUV422 with 8-bits per component (=16-bits per pixel) and a resolution of 720x576 pixels, for example. http://download.das-werkstatt.com/pb/mthk/info/video/comparison_video_codec… * Applying no compression at all (=uncompressed <http://download.das-werkstatt.com/pb/mthk/info/video/comparison_video_codec…>) results in: * 720 x 576 x 16 bits x 25 frames ≥ 1.159 GiB/Minute * * For YUV422, 10 bpc (10+5+5 = 20 bits per pixel), this would be: * 720 x 576 x 20 bits x 25 frames ≥ 1.448 GiB/Minute So you would fit no more than 4 minutes of video on a whole 4.7 GiB DVD. Since these values are already uncomfortable (even for 422-subsampled PAL), imagine HD and beyond. Therefore, you will hardly find uncompressed video in the wild, except for temporary editing use cases. ----------- The examples below show the differences in storage space required for uncompressed, lossless and lossy video codecs: https://www.scart.be/?q=en/content/short-guide-choosing-digital-format-vide… * uncompressed (e.g., v210) 10-bit -> approx. 100GB per hour of video; * lossless compression (FFV1 and JPEG 2000) 10-bit -> approx. 45-50 GB per hour of video; * lossy compression; * MPEG 2/DV50/IMX50 (50 Mbps) -> approx. 25 GB per hour of video; * to compare with * DV (DV25) -> approx. 12 GB per hour of video; * MPEG 2 (DVD quality) -> approx. 3.6 GB per hour of video. ------------- That is, if we manage to capture 422 uncompressed video via either an internal capture card or via an external SSD recorder, there is a need for * mathematical lossless compression with typical intraframe FFV1/MKV for preservation (archive masters) * and/or possibly "visually lossless" compression to a lossy intraframe intermediate/mezzanine format I had no uncompressed test file available, but tried this guide to generate a simple video (only) file: Compressing and uncompressing a preservation master video file https://bits.ashleyblewer.com/blog/2018/11/08/compressing-and-uncompressing… ffmpeg -f lavfi -i mandelbrot=size=640x480:rate=25 -c:v v210 -t 5 uncompressed.mov and next to turn it to a FFV1/MKV lossless compressed file ffmpeg -i uncompressed.mov -map 0 -dn -c:v ffv1 -level 3 -g 1 -slicecrc 1 -slices 16 -c:a copy ffv1.mkv and if required a test to uncompress the FFV1/MKV file to uncompressed 10bit file again: ffmpeg -i ffv1.mkv -c:v v210 uncompressed-again.mov du -s * 105004 uncompressed.mov 22844 ffv1.mkv 105004 uncompressed-again.mov In this simple case the lossless compressed ffv1.mkv size is schrinked to 22% of the uncompressed.mov file. In other practical tests I read the FFV1 file size was schrinked to 1/3 to 46% of the uncompressed video. (I tested for fun to transcode a "visual lossless" compressed ProResHQ.mov file to FFV1/MKV, but that extented the file size to 180% ) I loaded the simple generated ffv1.mkv in Cinelerra, but also read about a problem in a previous thread [Cin] Single-frame step fwd/bak in viewer delayed? https://www.mail-archive.com/[email protected]/msg01799.html Is this problem solved? And will the lossless compressed (preservation) format FFV1.MKV work as a editing format, or will there be a need beside to have another intermediate format MPEG 2/DV50/IMX50 (50 Mbps) for editing? ---------- Terje J. H

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Fwd: mesa | VCE encoding slow when GPU is not stressed (HD 7970M) (#1235)
by Andrew Randrianasulu 25 Dec '21

25 Dec '21

patchset probably for 4.5 git... ---------- Forwarded message ---------- From: *Ed Martin (@edman007)* <gitlab(a)gitlab.freedesktop.org> Date: Saturday, December 25, 2021 Subject: Re: mesa | VCE encoding slow when GPU is not stressed (HD 7970M) (#1235) To: randrianasulu(a)gmail.com Ed Martin <https://gitlab.freedesktop.org/edman007> commented <https://gitlab.freedesktop.org/mesa/mesa/-/issues/1235#note_1200931>: I can confirm that this FFMPeg patchset seems to solve the issue for me, it implements async calls https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=5148 — View it on GitLab <https://gitlab.freedesktop.org/mesa/mesa/-/issues/1235#note_1200931>. You're receiving this email because of your account on gitlab.freedesktop.org. If you'd like to receive fewer emails, you can unsubscribe <https://gitlab.freedesktop.org/-/sent_notifications/ffa648dea16b62e78f3a3ca…> from this thread or adjust your notification settings.

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Fwd: mesa | VAAPI H.264 encoding is slow on Polaris vs. HEVC and Windows AMF (#3540)
by Andrew Randrianasulu 25 Dec '21

25 Dec '21

if you have similar card and experience slow h264 encoding... also see next mail for ffmoeg patch serues (not sure if Cingg can benefit from ffmpeg patches...) ---------- Forwarded message ---------- From: *Nicholas Rush (@NicholasRush)* <gitlab(a)gitlab.freedesktop.org> Date: Saturday, December 25, 2021 Subject: Re: mesa | VAAPI H.264 encoding is slow on Polaris vs. HEVC and Windows AMF (#3540) To: randrianasulu(a)gmail.com Nicholas Rush <https://gitlab.freedesktop.org/NicholasRush> commented on a discussion <https://gitlab.freedesktop.org/mesa/mesa/-/issues/3540#note_1201025>: Wow, everything works as intended now, thank you! 1080p60 now works(tested in obs with 10,000 bitrate) on rx580. I have applied patch to mesa-git AUR package. This is how i made it: 1. yay -S mesa-git --editmenu 2. Edit pkgbuild: add patch --directory=mesa --forward --strip=1 --input="[PATH TO THIS PATCH]" to the end of prepare() func 3. Compile — View it on GitLab <https://gitlab.freedesktop.org/mesa/mesa/-/issues/3540#note_1201025>. You're receiving this email because of your account on gitlab.freedesktop.org. If you'd like to receive fewer emails, you can unsubscribe <https://gitlab.freedesktop.org/-/sent_notifications/ece8eb507e8e86693b7874b…> from this thread or adjust your notification settings.

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Three PCIe capture cards with analog video capabilities and Linux support
by Terje J. Hanssen 23 Dec '21

23 Dec '21

Just my quick preview evaluation and ranking - not every detail has been found or verified .... 1) Blackmagic Design Intensity Pro 4K 10 bit color precision, 4:2:2 subsampling , SD analog and HDMI input, prop-driver, "best priced" https://www.blackmagicdesign.com/no/products/intensitypro4k https://www.blackmagicdesign.com/no/products/intensitypro4k/techspecs/W-INT… https://blog.za3k.com/capturing-video-on-debian-linux-with-the-blackmagic-i… 2) AVerMedia CL311-M2 8 bit color precision, 4:2:2 subsampling , SD analog and HDMI input, v4L2, medium priced https://www.avermedia.com/professional/product/cl311_m2/overview https://www.avermedia.com/professional/product/cl311_m2/spec https://www.avermedia.com/professional/download/cl311_m2#ans_part 3) Osprey 260e 10 bit? color precision, 4:2:2 subsampling , SD analog input only, v4L2, high priced https://www.ospreyvideo.com/analog https://docs.google.com/viewer?url=https%3A%2F%2Fdf44571b-9d7f-4226-9ca4-72… https://www.kernellabs.com/blog/?p=1801

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Re: [Cin] decklink/blackmagic licence, driver?
by Andrew Randrianasulu 22 Dec '21

22 Dec '21

On Sunday, December 19, 2021, Andrew Randrianasulu <randrianasulu(a)gmail.com> wrote: > It seems there is some uncertanity about what users/distributors can do > with sdk required for working with their hardware? > > https://patchwork.ffmpeg.org/project/ffmpeg/patch/ > 201704010120.37843.cehoyos(a)ag.or.at/#10354 > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839941 > > {this is related to HD capture hw we discuss with Terje} > > Should someone explicitly mail blackmagic's support about this? > found some more links https://hackweek.opensuse.org/20/projects/write-an-open-source-driver-for-t… {but was it even started? cc originator} https://inogeni.com/product/converters-comparison-table-7/ claims to support Linux (but usb3)

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another patch series
by Andrew Randrianasulu 21 Dec '21

21 Dec '21

basically my lpcm + truehd ffmpeg patches, autoreconf for thirdoarty libs, fix for thirdparty/Makefile, less build in openexr, ah and filegif crash fix

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EXPERIMENTAL: blu-ray lpcm profile + gui
by Andrew Randrianasulu 21 Dec '21

21 Dec '21

well, me and gui not quite get along... (see new layout of 'create bd' window..) but... it seems to work? you can choose profile (out of two) and it will appear in rendering window..

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tsmuxer gui
by Andrew Randrianasulu 21 Dec '21

21 Dec '21

Attempt at utilizing tsmuxer depending on checkbox in BD creation window. (tsmuxer should avoid whole loop mounting/unmounting root requrement.. and support more features like HEVC muxing, arbitrary delay/chapters..)

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