[FFmpeg-user] How to convert M2TS BD Video to DVD Video?

[Terje J. Hanssen]

I have several homemade, simple Bluray Video iso files based on 
mpeg2video and PCM audio, duration about 3.0 - 3.5 hours each.

Instead of making DVD video options also from scratch, I wonder if it 
easier/possible to convert the SD-BD M2TS files to compliant DVD video?
I would be thankful for suggestions on using ffmpeg procedures for this 
target.

Inspecting a typical SD-BD-video.m2ts by mounting the iso:

    mount SD-BD_DV58_09+DV59+DV60.iso /mnt2
    mount: /mnt2: WARNING: source write-protected, mounted read-only.

    ls -lh /mnt2/BDMV/STREAM
    total 36G
    -r--r--r-- 1 nobody nobody 36G Apr 16 18:58 00000.m2ts

    ffprobe -hide_banner /mnt2/BDMV/STREAM/00000.m2ts
    Input #0, mpegts, from '/mnt2/BDMV/STREAM/00000.m2ts':
       Duration: 03:00:12.12, start: 4200.000000, bitrate: 28013 kb/s
       Program 1
       Stream #0:0[0x1011]: Video: mpeg2video (Main) (HDMV /
    0x564D4448), yuv420p(tv, bottom first), 720x576 [SAR 16:15 DAR 4:3],
    25 fps, 25 tbr, 90k tbn, 50 tbc
         Side data:
           cpb: bitrate max/min/avg: 25000000/0/0 buffer size: 28000256
    vbv_delay: N/A
       Stream #0:1[0x1100]: Audio: pcm_bluray (HDMV / 0x564D4448), 48000
    Hz, stereo, s16, 1536 kb/s


Thanks
Terje J. Hanssen