Hi,
I'm trying to make a DVD with a still image (1:1 aspect ratio) and
audio, the only issue is that the video is a bit blocky even after
setting the highest bitrate available.
The command used:
`ffmpeg -i image.jpg -i audiofile.wav -f dvd -muxrate 10080k -packetsize
2048 -pix_fmt yuv420p -r 24000/1001 -codec:v mpeg2video -g 18 -b:v 9800k
-maxrate:v 9800k -minrate:v 9800k -bufsize:v 1835008 -vf
"scale=720:576:flags=lanczos:force_original_aspect_ratio=decrease,pad=720:576:(ow-iw)/2:(oh-ih)/2"
-codec:a pcm_dvd output.mpg`
FFmpeg version (latest from Arch repos):
`ffmpeg version n6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 13.2.1 (GCC) 20230801
configuration: --prefix=/usr --disable-debug --disable-static
--disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm
--enable-lto --enable-fontconfig --enable-frei0r --enable-gmp
--enable-gnutls --enable-gpl --enable-ladspa --enable-libaom
--enable-libass --enable-libbluray --enable-libbs2b --enable-libdav1d
--enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-libharfbuzz --enable-libiec61883 --enable-libjack
--enable-libjxl --enable-libmodplug --enable-libmp3lame
--enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopenmpt --enable-libopus
--enable-libplacebo --enable-libpulse --enable-librav1e --enable-librsvg
--enable-librubberband --enable-libsnappy --enable-libsoxr
--enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1
--enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf
--enable-libvorbis --enable-libvpl --enable-libvpx --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2
--enable-libxvid --enable-libzimg --enable-nvdec --enable-nvenc
--enable-opencl --enable-opengl --enable-shared --enable-version3
--enable-vulkan
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`
I also played around with some hidden options but they didn't seem to
make much difference:
`-trellis 1 -dia_size 2 -pre_dia_size 2 -precmp rd -cmp rd -subcmp rd
-mbd rd -last_pred 3 -vqmin 0 -vqmax 0 -qmin 1 -qmax 1 -dc 11 -vstrict 0
-mpv_flags '+mv0+cbp_rd+qp_rd' -lmin 1`
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