On Wed, Nov 29, 2023 at 3:25 AM Philippe Cerfon <philc...@gmail.com> wrote:
> Hey Paul. > > On Tue, Nov 28, 2023 at 4:51 PM Paul B Mahol <one...@gmail.com> wrote: > > IIRC MVC in h264 is not supported. > > What a pity. I've filed https://trac.ffmpeg.org/ticket/10706 in case > someone is ever going to work on this. > > Ticket is already closed because it is duplicate ticket. > > stereo3d filter is for anaglyph presentation of decoded 3d frames and > some > > other minor features. > > supporting alternating, top/bottom, left/right etc. > > I'm really new to 3D, so may be completely wrong: but as far as I > understood, quite some end devices (e.g. 3D capable projectors or so) > expect e.g. side-by-side input, too (i.e. than cannot cope with MVC > either). > stereo3d filter supports converting alternating to side by side conversion, as evident by really reading filter documentation. > > Also, it would have been nice to convert the MVC to a side-by-side > version and see whether it actually works. Seems so far, there are > only few ways to decode this. Most people apparently use BD3D2MK3D[0], > but that's windows only, and as far as I can see not open. > > > But as usual: > > Well I guess the following are not really useful, if it anyway doesn't > support MVC, but here they are: > > > - missing ffmpeg version > > $ ffmpeg -version > ffmpeg version 6.1-4 Copyright (c) 2000-2023 the FFmpeg developers > built with gcc 13 (Debian 13.2.0-6) > configuration: --prefix=/usr --extra-version=4 --toolchain=hardened > --libdir=/usr/lib/x86_64-linux-gnu > --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl > --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom > --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca > --enable-libcdio --enable-libcodec2 --enable-libdav1d > --enable-libflite --enable-libfontconfig --enable-libfreetype > --enable-libfribidi --enable-libglslang --enable-libgme > --enable-libgsm --enable-libjack --enable-libmp3lame > --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt > --enable-libopus --enable-libpulse --enable-librabbitmq > --enable-librist --enable-librubberband --enable-libshine > --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt > --enable-libssh --enable-libtheora --enable-libtwolame > --enable-libvidstab --enable-libvorbis --enable-libvpx > --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid > --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 > --enable-omx --enable-openal --enable-opencl --enable-opengl > --enable-sdl2 --disable-sndio --enable-libjxl --enable-pocketsphinx > --enable-librsvg --enable-libvpl --disable-libmfx --enable-libdc1394 > --enable-libdrm --enable-libiec61883 --enable-chromaprint > --enable-frei0r --enable-libsvtav1 --enable-libx264 > --enable-libplacebo --enable-librav1e --enable-shared > libavutil 58. 29.100 / 58. 29.100 > libavcodec 60. 31.102 / 60. 31.102 > libavformat 60. 16.100 / 60. 16.100 > libavdevice 60. 3.100 / 60. 3.100 > libavfilter 9. 12.100 / 9. 12.100 > libswscale 7. 5.100 / 7. 5.100 > libswresample 4. 12.100 / 4. 12.100 > libpostproc 57. 3.100 / 57. 3.100 > > > > - missing full uncut ffmpeg command line and its output > > I merely tried on some MKV (which was generated from a BluRay): > $ ffplay -i a2.mkv -vf stereo3d=sbsr:sbsr > > and various oher outbuts. But obviously, the MVC stream is not any of > the input formats that the filter supports. > > > - missing input files > > That might be difficult, I mean these are from BluRays, so the > material is a) super big, b) copyrighted. > > > > IIRC H.264 MVC is alternating frames 3d format. > > As far as I understood it, it's rather that the H264 contains two > streams: a "normal" (AVC) one, which I think it s the left eye, and > the MVC stream, which is like a diff from the left to the right eye. > If video is in two different streams use stereo3d filter in combination with framepack filter to convert it to side by side. > Thanks, > Philippe. > > [0] https://download.videohelp.com/r0lZ/BD3D2AVS/index.html > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
