June 2024 - Cin - Cinelerra-GG Mailing Lists

ffmpeg -hwaccel AV1 QSV encoding on Arc GPU executes rapid, but commands?
by Terje J. Hanssen 20 Jun '24

20 Jun '24

Late last year I posted a thread "[Cin] Prepping HW upgrade options for AV1 de-/encoding" https://www.mail-archive.com/[email protected]/msg06626.html and there have also been other threads about hardware acceleration So here again, I also wanted to give it a first try with ffmpeg -hwaccel AV1 QSV encoding. First some system specifications: inxi -CGS System: Host: localhost.localdomain Kernel: 6.9.4-1-default arch: x86_64 bits: 64 Desktop: GNOME v: 46.2 Distro: openSUSE Tumbleweed-Slowroll 20240605 CPU: Info: 12-core (8-mt/4-st) model: 12th Gen Intel Core i7-12700KF bits: 64 type: MST AMCP cache: L2: 12 MiB Speed (MHz): avg: 800 min/max: 800/4900:5000:3800 cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800 8: 800 9: 800 10: 800 11: 800 12: 800 13: 800 14: 800 15: 800 16: 800 17: 800 18: 800 19: 800 20: 800 Graphics: Device-1: Intel DG2 [Arc A750] driver: i915 v: kernel Device-2: Microdia Camera driver: snd-usb-audio,uvcvideo type: USB Display: wayland server: X.org v: 1.21.1.12 with: Xwayland v: 24.1.0 compositor: gnome-shell driver: gpu: i915 resolution: 2560x1440~60Hz API: OpenGL v: 4.6 vendor: intel mesa v: 24.0.8 renderer: Mesa Intel Arc A750 Graphics (DG2) API: EGL Message: EGL data requires eglinfo. Check --recommends. ls /dev/dri by-path card1 renderD128 ffmpeg -hide_banner -hwaccels Hardware acceleration methods: vdpau cuda vaapi qsv drm vulkan ffmpeg -hide_banner -h encoder=av1_qsv Encoder av1_qsv [AV1 (Intel Quick Sync Video acceleration)]: General capabilities: delay hybrid Threading capabilities: none Supported hardware devices: qsv qsv qsv Supported pixel formats: nv12 p010le qsv av1_qsv encoder AVOptions: -async_depth <int> E..V....... Maximum processing parallelism (from 1 to INT_MAX) (default 4) -preset <int> E..V....... (from 0 to 7) (default 0) veryfast 7 E..V....... faster 6 E..V....... fast 5 E..V....... medium 4 E..V....... slow 3 E..V....... slower 2 E..V....... veryslow 1 E..V....... -forced_idr <boolean> E..V....... Forcing I frames as IDR frames (default false) -low_power <boolean> E..V....... enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.) (default auto) -b_strategy <int> E..V....... Strategy to choose between I/P/B-frames (from -1 to 1) (default -1) -adaptive_i <int> E..V....... Adaptive I-frame placement (from -1 to 1) (default -1) -adaptive_b <int> E..V....... Adaptive B-frame placement (from -1 to 1) (default -1) -extbrc <int> E..V....... Extended bitrate control (from -1 to 1) (default -1) -low_delay_brc <boolean> E..V....... Allow to strictly obey avg frame size (default auto) -max_frame_size <int> E..V....... Maximum encoded frame size in bytes (from -1 to INT_MAX) (default -1) -max_frame_size_i <int> E..V....... Maximum encoded I frame size in bytes (from -1 to INT_MAX) (default -1) -max_frame_size_p <int> E..V....... Maximum encoded P frame size in bytes (from -1 to INT_MAX) (default -1) -profile <int> E..V....... (from 0 to INT_MAX) (default unknown) unknown 0 E..V....... main 1 E..V....... -tile_cols <int> E..V....... Number of columns for tiled encoding (from 0 to 65535) (default 0) -tile_rows <int> E..V....... Number of rows for tiled encoding (from 0 to 65535) (default 0) -look_ahead_depth <int> E..V....... Depth of look ahead in number frames, available when extbrc option is enabled (from 0 to 100) (default 0) -------------- So far I have not found any detailed user guide for this, so suggestions are welcome. I have tried to apply a sample command line from the FFmpeg wiki:Hardware/QuickSync https://trac.ffmpeg.org/wiki/Hardware/QuickSync#Transcode ffmpeg -hwaccel qsv -qsv_device /dev/dri/renderD128 -c:v h264_qsv -i input.mp4 -c:v h264_qsv output.mp4 I added -preset 4 (medium) from above (which gives much more compression and smaller file size than with -preset 4 for av1_svt). This didn't seem to change the file size compression compared with the defaults (without setting preset) Some visible artifacts (mosaic and stuttering ) is seen during zoom and pan in the hdv file; probably due to hard compression and/or the memory allocation error messages, I would guess. ------------- In short, I have tested the same SD-DV 576i and HDV 1080i video files as with SVT-AV1 (CPU based) in another resent post. ffmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i dv01_07.dv -c:v av1_qsv -preset 4 dv01_07_av1_qsv_pr4.webm frame= 2832 fps=2106 q=-0.0 Lsize= 10554KiB time=00:01:53.24 bitrate= 763.5kbits/s speed=84.2x fmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i hdv09_04.m2t -c:v av1_qsv -preset 4 hdv09_04.m2t_av1_qsv_pr4.webm frame= 5913 fps=700 q=-0.0 Lsize= 48022KiB time=00:03:58.77 bitrate=1647.6kbits/s dup=0 drop=4 speed=28.3x du -sh dv01_07* 389M dv01_07.dv 11M dv01_07_av1_qsv_pr4.webm 24M dv01_07_svt-av1_pr4.webm 27M dv01_07_svt-av1_pr6.webm 28M dv01_07_svt-av1_pr8.webm 31M dv01_07_svt-av1_pr10.webm 33M dv01_07_svt-av1_pr12.webm du -sh hdv09_04* 745M hdv09_04.m2t 47M hdv09_04.m2t_av1_qsv_pr4.webm 111M hdv09_04_m2t_svt-av1_pr4.webm 119M hdv09_04_m2t_svt-av1_pr6.webm 118M hdv09_04_m2t_svt-av1_pr8.webm 125M hdv09_04_m2t_svt-av1_pr10.webm 134M hdv09_04_m2t_svt-av1_pr12.webm A warning output in both command lines is: [vist#0:0/dvvideo @ 0x556a3f679100] WARNING: defaulting hwaccel_output_format to qsv for compatibility with old commandlines. This behaviour is DEPRECATED and will be removed in the future. Please explicitly set "-hwaccel_output_format qsv". I tried to add this without success, so suggestion is welcome !? And possibly suggestions regarding the more seriously errors "Cannot allocate memory" that arised from the second command transcoding the hdv file? [mpeg2_qsv @ 0x5596ba3d1500] Failed to allocate a qsv/nv12 frame from a fixed pool of hardware frames. [mpeg2_qsv @ 0x5596ba3d1500] Consider setting extra_hw_frames to a larger value (currently set to 8, giving a pool size of 32). [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Error submitting packet to decoder: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Error submitting packet to decoder: Cannot allocate memory ....... skip [mpegts @ 0x5596ba48c000] PES packet size mismatch0:03:46.20 bitrate=1650.3kbits/s speed=28.3x [mpegts @ 0x5596ba48c000] Packet corrupt (stream = 1, dts = 258142320). [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory .......... skip [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [mpeg2_qsv @ 0x5596ba3d1500] Too many errors when draining, this is a bug. Stop draining and force EOF. [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Internal bug, should not have happened I attach also the "complete" ffmpeg output FWIW for both files, though skipping repeated error lines: ffmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i dv01_07.dv -c:v av1_qsv -preset 4 dv01_07_av1_qsv_pr4.webm libva info: VA-API version 1.21.0 libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_20 libva info: va_openDriver() returns 0 libva info: VA-API version 1.21.0 libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_20 libva info: va_openDriver() returns 0 [dv @ 0x556a3f643000] Estimating duration from bitrate, this may be inaccurate [vist#0:0/dvvideo @ 0x556a3f679100] WARNING: defaulting hwaccel_output_format to qsv for compatibility with old commandlines. This behaviour is DEPRECATED and will be removed in the future. Please explicitly set "-hwaccel_output_format qsv". Input #0, dv, from 'dv01_07.dv': Metadata: timecode : 01:09:35:09 Duration: 00:01:53.28, start: 0.000000, bitrate: 28800 kb/s Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28800 kb/s, 60k fps, 25 tbr, 60k tbn Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream mapping: Stream #0:0 -> #0:0 (dvvideo (native) -> av1 (av1_qsv)) Stream #0:1 -> #0:1 (pcm_s16le (native) -> opus (libopus)) Press [q] to stop, [?] for help [libopus @ 0x556a3f656580] No bit rate set. Defaulting to 96000 bps. [av1_qsv @ 0x556a3f653040] Using the constant quantization parameter (CQP) by default. Please use the global_quality option and other options for a quality-based mode or the b option and other options for a bitrate-based mode if the default is not the desired choice. Output #0, webm, to 'dv01_07_av1_qsv_pr4.webm': Metadata: timecode : 01:09:35:09 encoder : Lavf61.1.100 Stream #0:0: Video: av1, nv12(bottom coded first (swapped)), 720x576 [SAR 16:15 DAR 4:3], q=2-31, 25 fps, 1k tbn Metadata: encoder : Lavc61.3.100 av1_qsv Stream #0:1: Audio: opus, 48000 Hz, stereo, s16, 96 kb/s Metadata: encoder : Lavc61.3.100 libopus [out#0/webm @ 0x556a3f4da5c0] video:9315KiB audio:1186KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.505196% frame= 2832 fps=2106 q=-0.0 Lsize= 10554KiB time=00:01:53.24 bitrate= 763.5kbits/s speed=84.2x ------------------ ffmpeg -hide_banner -hwaccel qsv -qsv_device /dev/dri/renderD128 -i hdv09_04.m2t -c:v av1_qsv -preset 4 hdv09_04.m2t_av1_qsv_pr4.webm libva info: VA-API version 1.21.0 libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_20 libva info: va_openDriver() returns 0 libva info: VA-API version 1.21.0 libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_20 libva info: va_openDriver() returns 0 [mpeg2video @ 0x5596ba391500] Invalid frame dimensions 0x0. Last message repeated 3 times [mpegts @ 0x5596ba48c000] PES packet size mismatch [mpegts @ 0x5596ba48c000] Packet corrupt (stream = 1, dts = 258142320). [mpegts @ 0x5596ba48c000] Could not find codec parameters for stream 2 (Unknown: none ([160][0][0][0] / 0x00A0)): unknown codec Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options [mpegts @ 0x5596ba48c000] Could not find codec parameters for stream 3 (Unknown: none ([161][0][0][0] / 0x00A1)): unknown codec Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options [vist#0:0/mpeg2video @ 0x5596ba394d00] WARNING: defaulting hwaccel_output_format to qsv for compatibility with old commandlines. This behaviour is DEPRECATED and will be removed in the future. Please explicitly set "-hwaccel_output_format qsv". Input #0, mpegts, from 'hdv09_04.m2t': Duration: 00:03:59.06, start: 2629.496000, bitrate: 26110 kb/s Program 100 Stream #0:0[0x810]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25 fps, 25 tbr, 90k tbn Side data: cpb: bitrate max/min/avg: 25000000/0/0 buffer size: 7340032 vbv_delay: N/A Stream #0:1[0x814]: Audio: mp2 (mp3float) ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 384 kb/s Stream #0:2[0x815]: Unknown: none ([160][0][0][0] / 0x00A0) Stream #0:3[0x811]: Unknown: none ([161][0][0][0] / 0x00A1) Stream mapping: Stream #0:0 -> #0:0 (mpeg2video (mpeg2_qsv) -> av1 (av1_qsv)) Stream #0:1 -> #0:1 (mp2 (native) -> opus (libopus)) Press [q] to stop, [?] for help [libopus @ 0x5596ba448cc0] No bit rate set. Defaulting to 96000 bps. [av1_qsv @ 0x5596ba39f1c0] Using the constant quantization parameter (CQP) by default. Please use the global_quality option and other options for a quality-based mode or the b option and other options for a bitrate-based mode if the default is not the desired choice. Output #0, webm, to 'hdv09_04.m2t_av1_qsv_pr4.webm': Metadata: encoder : Lavf61.1.100 Stream #0:0: Video: av1, qsv(tv, bt709, top coded first (swapped)), 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 25 fps, 1k tbn Metadata: encoder : Lavc61.3.100 av1_qsv Stream #0:1: Audio: opus, 48000 Hz, stereo, s16, 96 kb/s Metadata: encoder : Lavc61.3.100 libopus [mpeg2_qsv @ 0x5596ba3d1500] Failed to allocate a qsv/nv12 frame from a fixed pool of hardware frames. [mpeg2_qsv @ 0x5596ba3d1500] Consider setting extra_hw_frames to a larger value (currently set to 8, giving a pool size of 32). [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Error submitting packet to decoder: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Error submitting packet to decoder: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed ............skip [mpegts @ 0x5596ba48c000] PES packet size mismatch0:03:46.20 bitrate=1650.3kbits/s speed=28.3x [mpegts @ 0x5596ba48c000] Packet corrupt (stream = 1, dts = 258142320). [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory .......skip [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Cannot allocate memory [mpeg2_qsv @ 0x5596ba3d1500] get_buffer() failed [mpeg2_qsv @ 0x5596ba3d1500] Too many errors when draining, this is a bug. Stop draining and force EOF. [vist#0:0/mpeg2video @ 0x5596ba394d00] [dec:mpeg2_qsv @ 0x5596ba3921c0] Decoding error: Internal bug, should not have happened [out#0/webm @ 0x5596ba3cc400] video:45422KiB audio:2490KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.230717% frame= 5913 fps=700 q=-0.0 Lsize= 48022KiB time=00:03:58.77 bitrate=1647.6kbits/s dup=0 drop=4 speed=28.3x

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on macos we have few undefined functions
by Andrew Randrianasulu 19 Jun '24

19 Jun '24

You guess it - I tried to convince cingg to build on macos 10.12.6 bchash.C:184:13: error: use of undeclared identifier 'open_memstream' seems to exist (reimplemented ) here https://android.googlesource.com/platform/system/core/+/cf63d5d00f5a631a290… fmemopen also used in bchash.C https://github.com/mprzybylski/darwin-fmemopen pthread_spinlock_t does not exist here ... https://stackoverflow.com/questions/8177031/does-mac-os-x-have-pthread-spin… there is also bunch of dirent64 vs dirent and this ffmpeg.C:4499:26: error: no member named 'st_mtim' in 'stat' time_t t = (time_t)tst.st_mtim.tv_sec; ~~~ ^ ffmpeg.C:4502:20: error: no member named 'st_mtim' in 'stat' int64_t us = tst.st_mtim.tv_nsec / 1000; ~~~ ^ 20 warnings and 19 errors generated. ==== I set build against wrong ffmpeg includes ....

2 6

AOM SVT-AV1 2.1 Released
by Terje J. Hanssen 17 Jun '24

17 Jun '24

According to Phoronix the Alliance of Open Media project quietly released (the Intel based) SVT-AV1 v2.1 last week. With this new SVT-AV1 release are yet more performance optimizations and tuning. The M0, M3, M5, and M6 presets are seeing 12~40% speed-ups while maintaining similar quality levels to prior releases. The compression efficiency of presets M11 to M13 meanwhile have improved by 1~2%. New SVT-AV1 benchmarks soon. https://www.phoronix.com/news/SVT-AV1-2.1-Released ---------- Meanwhile, I have updated my previous tests using ffmpeg-7 and libSvtAv1Enc2 version 2.0 on openSUSE Slowroll below. The results are about the same speed +/- compared as my earlier tests using ffmpeg-6 and SVT-AV1 encoder version 1.7 https://lists.cinelerra-gg.org/pipermail/cin/2023-December/007436.html (Else I have purchased the hardware components to upgrade and rebuild my workstations for a planned AV1 QSV/hw video transcoding: mobo, Intel cpu and gpu, memory, ssd, cooler. More about this later. But first I have to finish my ongoing DVD Video project). S | Name | Type | Version | Arch | Repository ---+-----------------------+---------+--------------------+--------+---------------- i+ | ffmpeg-7 | package | 7.0-1699.3.pm.3 | x86_64 | packman i | kernel-firmware-intel | package | 20240510-1.1 | noarch | update-slowroll i | libdav1d7 | package | 1.4.1-1.1 | x86_64 | repo-oss i | libdrm_intel1 | package | 2.4.120-1.3 | x86_64 | repo-oss i+ | libheif-dav1d | package | 1.17.6-1699.5.pm.5 | x86_64 | packman i+ | libheif-ffmpeg | package | 1.17.6-1699.5.pm.5 | x86_64 | packman i+ | libheif-rav1e | package | 1.17.6-1699.5.pm.5 | x86_64 | packman i | librav1e0_6 | package | 0.6.6-1.3 | x86_64 | repo-oss i | libSvtAv1Enc2 | package | 2.0.0-1.1 | x86_64 | repo-oss ffmpeg -hide_banner -codecs | grep av1 DEV.L. av1 Alliance for Open Media AV1 (decoders: libdav1d libaom-av1 av1 av1_cuvid av1_qsv) (encoders: libaom-av1 librav1e libsvtav1 av1_nvenc av1_qsv av1_amf av1_vaapi) DEAIL. wmav1 Windows Media Audio 1 ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 8 -crf 35 -c:a libvorbis dv01_07_svt-av1_pr8.webm frame= 2832 fps= 74 q=35.0 Lsize= 28699KiB time=00:01:53.24 bitrate=2076.1kbits/s speed=2.98x ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis dv01_07_svt-av1_pr10.webm frame= 2832 fps= 84 q=35.0 Lsize= 29876KiB time=00:01:53.24 bitrate=2161.3kbits/s speed=3.37x ffmpeg -i dv01_07.dv -c:v libsvtav1 -preset 12 -crf 35 -c:a libvorbis dv01_07_svt-av1_pr12.webm frame= 2832 fps=244 q=35.0 Lsize= 32887KiB time=00:01:53.24 bitrate=2379.1kbits/s speed=9.77x ffmpeg -i hdv01_04.m2t -c:v libsvtav1 -preset 10 -crf 35 -c:a libvorbis hdv01_04_m2t_svt-av1_pr10.webm frame=16420 fps= 62 q=34.0 Lsize= 373769KiB time=00:10:57.16 bitrate=4659.3kbits/s speed=2.47x du -sh * 389M dv01_07.dv 30M dv01_07_svt-av1_pr10.webm 33M dv01_07_svt-av1_pr12.webm 29M dv01_07_svt-av1_pr8.webm 2.0G hdv01_04.m2t 366M hdv01_04_m2t_svt-av1_pr10.webm

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A figure number is missing in the HTML User Manual
by Bulhwi Cha 14 Jun '24

14 Jun '24

In section 2.5 'Resources Window' of the HTML User Manual (31 May 2024), a figure number is missing from figure 2.28: > Figure: The “master” Media folder

2 1

A phrase is duplicated in the User Manual
by Bulhwi Cha 13 Jun '24

13 Jun '24

On page 74, section 2.3 'Viewer Window' of the User Manual, there's a sentence that duplicates the phrase "output size" as follows: > The Viewer uses the project’s output size output sizeentry format settings to dis- > play the media instead of the original asset’s format. I'm a newcomer to Cinelerra-GG, so I'm not sure how to fix this sentence.

3 2

ChromakeyHSV menu much improved
by Phyllis Smith 11 Jun '24

11 Jun '24

Checked into GIT an anonymous contribution for a much improved ChromakeyHSV menu to include: 1) Now there are individual boxes on the left side where you can either keyin a distinct value or use the up/down arrows to change the value. This gives you a much better control than where previously you could only move the slider to jiggle the number you wanted. Also, much easier to see what all the values are at once whereas before you had to click on each individual diamond setting to see just 1 value. 2) You can reset individual parameters to the default. Before you could only reset them all so you would lose a particular value you were already happy with. 3) The menu is more visible over a larger space making it easier to see. 4) Plus some minor code cleanup to eliminate at least 1 duplicate line and to put some "int" on same lines as statement. P.S. Someone indicated that ChromakeyHSV had some kind of bug, but I was wondering if Andrea ever found out exactly what that was? since it looks OK to me.

5 14

Fade In/Fade Out flash bug
by Andrea paz 09 Jun '24

09 Jun '24

In MantisBT #0559, Georgy took an in-depth look at how Dissolve works when the two affected clips have an alpha channel at different opacity (see comment 005645, for a detailed description). The purpose is to eliminate The flash of gray lettering just before having the normal Dissolve. Georgy explained the problem well. A patch appeared in CinHV to fix the problem but Georgy saw no difference between CinGG and CinHV with the same project (provided by IgorBeg). Investigating further he saw that the normal operation of Dissolve leads to the very flash we considered a bug. So the question is whether to leave it as is or make interventions to have a different result, more in line with expectations. Do you have any ideas/proposals on how Dissolve/Fade should work? https://www.cinelerra-gg.org/bugtracker/view.php?id=559

1 0

Will the LV2 Plugin interfaces in Cinelerra-GG be affected by the possible withdrawal of GTK2 from certained linux distribution?
by Pierre autourduglobe 06 Jun '24

06 Jun '24

A message from AVLinux (creator of AVL-MXe) on the MX Linux furum explains that the removal of GTK2 from the next stable release of Debian could affect the user interface display of certain plugins. He explains the problem and the source of the solution he intends to use for AVL-MXe. Will this problem affect the display of LV2 Plugin interfaces in Cinelerra-GG? https://forum.mxlinux.org/viewtopic.php?t=80745&sid=d86a25d93bc096a81fbf8ee…

2 1