- Cin - Cinelerra-GG Mailing Lists

Video Formats and the latest players AV1, WebM, HEIF
by Terje J. Hanssen 11 Jan '24

11 Jan '24

AV1 and WebM: Play it with your browser and smart-phone! I've just tested PAL HDV 16:9 and SD-DV 4:3 video clips rendered with Cin-GG to AV1 video and Opus audio muxed in a WebM container. They playback fine in VLC mediaplayer and not at least in Firefox and Google-Chrome browsers on Linux. Transferred these WebM clips using Gnome File manager on Linux to my smart-phone Google Pixel 7 Pro via USB connection. Tested these AV1 WebM clips playback worked fine on Pixel 7 with Android 14, possibly using its Tensor hw decoder. Refresh training references: Video File Formats overview https://www.ionos.com/digitalguide/websites/web-design/video-formats/ AV1 Codec https://www.ionos.com/digitalguide/websites/web-development/av1-codec/ WebM: https://www.ionos.com/digitalguide/websites/website-creation/webm/ HEIF: https://www.ionos.com/digitalguide/websites/web-design/what-can-heif-high-e…

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vorbis encoding param fix ?
by Andrew Randrianasulu 10 Jan '24

10 Jan '24

was about to suggest to try plain audio encoding via our own vorbis encoder but recognized settings were not working. Hopefully attached patch fixes audio-only ogg native encoding param dialog. Can you try it out?

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Report guessed / detected SAR/DAR values
by Andrew Randrianasulu 10 Jan '24

10 Jan '24

in ffmpeg asset detailed info for files like HDV info is guessed, for files like mov / mp4 you sometimes can get detection working. code lifted from dump.c and ffprobe.c

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document setformat's W/H ratio fields
by Andrew Randrianasulu 09 Jan '24

09 Jan '24

As just plain text message and code comment.

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flac.webm profile does not work anymore?
by Andrew Randrianasulu 08 Jan '24

08 Jan '24

Looking at Terje's problem with libvorbis audio I noticed flac.webm profile does not work, and ffmpeg 4.4.4 already complaining you can't put flac audio in webm. So, I guess we better to remove this profile?

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SAR, DAR, PAR - oh, my!
by Andrew Randrianasulu 08 Jan '24

08 Jan '24

Apparently, ffmpeg uses SAR (sample aspect ratio) as fundamental metric. Cingg's aspect_ratio variable in asset.h is DISPLAY aspect ratio, so we try to work out DAR from sample_aspect_ratio provided by ffmpeg and (coded) dimensions https://stackoverflow.com/questions/69560311/confused-about-parpixel-aspect… ==== SAR and PAR are the same. sample is the generic term for the elementary "particles" of media. pixel is specific to video, whereas audio has sample. sample aspect ratio is the term used in modern video codec standards. The only equation to know is SAR * width / height = DAR. ==== we do not display sar/dar in our asset info, I guess we better to! in ffmpeg.C AVRational FFMPEG::to_sample_aspect_ratio(Asset *asset) { #if 1 double display_aspect = asset->width / (double)asset->height; double sample_aspect = display_aspect / asset->aspect_ratio; int width = 1000000, height = width * sample_aspect + 0.5; float w, h; MWindow::create_aspect_ratio(w, h, width, height); return (AVRational){(int)w, (int)h}; -====- and -====- vid->length = secs * vid->frame_rate; vid->aspect_ratio = (double)st->sample_aspect_ratio.num / st->sample_aspect_ratio.den; vid->nudge = st->start_time; -===-- May be this line needs correcting ? (on decoding) -===-- float FFMPEG::ff_aspect_ratio(int stream) { //return ffvideo[stream]->aspect_ratio; AVFormatContext *fmt_ctx = ffvideo[stream]->fmt_ctx; AVStream *strm = ffvideo[stream]->st; AVCodecParameters *par = ffvideo[stream]->st->codecpar; AVRational dar; AVRational sar = av_guess_sample_aspect_ratio(fmt_ctx, strm, NULL); if (sar.num && ffvideo[stream]->get_rotation_angle() == 0) { av_reduce(&dar.num, &dar.den, par->width * sar.num, par->height * sar.den, 1024*1024); return av_q2d(dar); } return ffvideo[stream]->aspect_ratio; } -==-- I copied it from ffmpeg. there is plenty of more complex explanations, for example at https://lurkertech.com/lg/pixelaspect/ But I think for now we better to concentrate on what ffmpeg gives and takes.

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OT: another DVD player emulator
by Andrew Randrianasulu 08 Jan '24

08 Jan '24

not exactly video player, more like interactive game console using dvd discs .... https://github.com/andkrau/NuanceResurrection/tree/master forum: https://www.thehelper.net/forums/official-nuon-dome-nuon-discussion.80/ as far as I understand it was some kind of multi-processor machine, with weird instruction set. with literally handful of titles ever released .... yet its emulator lives on! found via vogons forum.

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PCSX2 DVD playback
by Andrew Randrianasulu 07 Jan '24

07 Jan '24

https://github.com/PCSX2/pcsx2/issues/1981 according to end of this issue it should work now, at least partially. New toy for me :) I think ps2 was more like those early embedded custom platform players than purely software things like xine/vlc. but we will see ....

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ffmpeg raw dv profiles patch
by Andrew Randrianasulu 05 Jan '24

05 Jan '24

Just for testing my aspect ratio patch series ... It makes funny dv out of HDV with two channel of audio: mediainfo /dev/shm/dv.dv General Complete name : /dev/shm/dv.dv Format : DV Commercial name : DVCPRO HD File size : 322 MiB Frame rate : 25.000 FPS Recorded date : 1970-01-01 00:00:00.000 Video Format : DV Commercial name : DVCPRO HD Width : 1 440 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 25.000 FPS Standard : PAL Color space : YUV Scan type : Interlaced Scan order : Bottom Field First Compression mode : Lossy Time code of first frame : 00:00:00:00 Time code source : Subcode time code Audio #1 ID : 0 Format : PCM Format settings : Big / Signed Bit rate mode : Constant Bit rate : 768 kb/s Channel(s) : 1 channel Sampling rate : 48.0 kHz Bit depth : 16 bits Audio #2 ID : 1 Format : PCM Format settings : Big / Signed Bit rate mode : Constant Bit rate : 768 kb/s Channel(s) : 1 channel Sampling rate : 48.0 kHz Bit depth : 16 bits Audio #3 ID : 2 Format : PCM Format settings : Big / Signed Bit rate mode : Constant Bit rate : 768 kb/s Channel(s) : 1 channel Sampling rate : 48.0 kHz Bit depth : 16 bits Audio #4 ID : 3 Format : PCM Format settings : Big / Signed Bit rate mode : Constant Bit rate : 768 kb/s Channel(s) : 1 channel Sampling rate : 48.0 kHz Bit depth : 16 bits ffprobe says: ffprobe /dev/shm/dv.dv ffprobe version 4.4.4 Copyright (c) 2007-2023 the FFmpeg developers built with gcc 11.2.0 (GCC) configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --docdir=/usr/doc/ffmpeg-4.4.4/html --mandir=/usr/man --disable-debug --enable-shared --disable-static --enable-gpl --enable-version3 --enable-avresample --arch=i586 --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray --enable-libcdio --enable-frei0r --enable-libgsm --enable-openal --enable-libopus --enable-librtmp --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libmp3lame --enable-opencl --enable-opengl --enable-libopenjpeg --disable-libpulse --enable-libsmbclient --enable-libsvtav1 --enable-libxml2 --enable-librsvg --enable-libdrm --enable-libaom --enable-libdav1d --enable-libsoxr --enable-libzimg --enable-vapoursynth libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 [dv @ 0x886bfc0] Estimating duration from bitrate, this may be inaccurate Input #0, dv, from '/dev/shm/dv.dv': Metadata: timecode : 00:00:00:00 Duration: 00:00:23.48, start: 0.000000, bitrate: 115200 kb/s Stream #0:0: Video: dvvideo, yuv422p, 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream #0:2: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream #0:3: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream #0:4: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s so, 8 streams ( four stereo pairs), only first 2 of them are real :)

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AOM 3.8, again
by Andrea paz 03 Jan '24

03 Jan '24

I have compiled with both aom 3.8 and aom 3.6 patches without errors. The rendering test results are: aom 3.4: 34 fps aom 3.6: 39 fps aom 3.8: 48 fps The speed increase is noticeable. The videos result visually of the same quality. aom 3.4 and 3.6 give files of equal size while aom 3.8 gives a slightly smaller file.

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