I did some testing and have to say that I thought that manono1 matrice was the most impressing.
For a grainy 80's movie (from a master source without visible compression artefacts)
01:20:39 easily fit on a DVD5 and looked fantastic.
setting Medium to 7000 and Maximum to 9000 lead to an average of 7001 kb/s in 2pass mode with 4.235.013.988 Bytes
and 6 370 kb/s average with 3.853.526.017 in 1pass mode.
I couldnt tell a visible difference in quality so I decided to go for 1pass for my future encodes and just combined the 2 in the command line
like this
Code:
"%FFMPEG%" -i %INPUTFILE% -vcodec mpeg2video -b:v %E_BR% -maxrate %VBV_MBR% -bufsize %VBV_MBS% -g %E_MIK% -bf %E_MBF% -bidir_refine 0
-b_strategy %E_ABF% -brd_scale %E_SBF% -sc_threshold %E_TSD% -b_sensitivity %E_DBF% -me_range %E_RME% -dc %E_DC% -q:v %E_FQ%
-an -mpv_flags mv0+naq -mv0_threshold 0 -mbd %E_RDO% -mbcmp %E_CMB% -precmp %E_CMP% -subcmp %E_CMP% -cmp %E_CMP% -skip_cmp %E_CMS%
-dia_size %E_DIA% -pre_dia_size %E_DIA% -last_pred %E_AMP% -dc %E_DC% -lmin %E_MLM% -mblmin %E_MBL% -qmin %E_MQ% -qcomp %E_VQ%
-intra_vlc true -intra_matrix %E_INTRA% -inter_matrix %E_INTER% -f mpeg2video -color_primaries 5 -color_trc 5 -colorspace 5
-color_range 1 -aspect %E_DAR% -y %1%.m2v
I hope this makes sense :-).
I had some raw VHS recordings of a TV show which is basically all the same quality and tried to squeeze them on a DVD5.
However I have no idea how to limit the average bitrate in 1pass.
changing the Medium bitrate setting really didnt't do much. I had a feeling that it didnt really matter if I chose
set E_BR=3950k , 4950 or 5950 and sometimes lower settings lead to a higher average bitrate which was weird.
for set E_BR=3950k
DVD1 - 00:53:13 - Average 6857 Max 8000 - 2.737.413.306 Bytes
DVD2 - 01:47:07 - Average 4960 Max 6500 - 3.985.130.434 Bytes
DVD3 - 02:06:12 - Average 5170 Max 6000 - 4.898.178.584 Bytes
I set the low bitrate settings "Minimum quantizer set E_MQ=2.0", "DC precision (dc) set E_DC=8" and tried "manono3", "HVS Best" and "AVAMAT7". but it didn't seem to help much.
DVD3 would be Average 4675 Max 6000 - 4.415.610.821 Bytes
after shrinking it with DVDshrink afterwards by the way.
The parameter which did the most in terms of filesize seemed to be the Max bitrate, but I have no idea which max bitrate to set for which length.
I there a way to limit the maximum filesize somehow? That would probably be the most easy way. It's probably a tough one for 1pass but maybe someone has an idea. Thanks for reading
cheers