[FFmpeg-user] SD Compress to h.265

[Richard Bartczak]

Hello,

SD e.g.:

   Duration: 01:23:37.68, start: 90008.907967, bitrate: 4243 kb/s
   Program 17501
   Stream #0:0[0x21](deu): Subtitle: dvb_teletext ([6][0][0][0] /
0x0006), 492x250
   Stream #0:1[0x1ff]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr,
90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 15000000/0/0 buffer size: 1835008
vbv_delay: N/A
   Stream #0:2[0x200](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000
Hz, stereo, fltp, 192 kb/s (clean effects)
   Stream #0:3[0x203](deu): Audio: ac3 ([129][0][0][0] / 0x0081), 48000
Hz, 5.1(side), fltp, 384 kb/s (clean effects)

It is very difficult to compress something like that.

To compress it to half size, and a check with vivictpp give not
acceptable results (the compression will be seen via vivictpp).

Currently used :

#SD rel. new Films,2 compression)
#for f in *.ts; do ffmpeg -y -i "$f" -vcodec libx265 -crf 21 -preset
slow -c:a copy "$(basename "$f" .ts).mkv";done
#for f in *.ts; do ffmpeg -y -i "$f" -vcodec libx265 -crf 18 -preset
slow -vf nlmeans="1.4:7:5:3:3" -c:a copy "$(basename "$f" .ts).mkv";done

crf values only as example.

Any ideas to improve ?

Gloster