[Cin] Anamorphic 16:9 SD-DV(D) widescreen to AV1.webm

[Terje J. Hanssen]

Den 14.01.2024 03:17, skrev Andrew Randrianasulu:
>
>
> вс, 14 янв. 2024 г., 05:03 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>
>
>     Den 13.01.2024 05:47, skrev Andrew Randrianasulu:
>>
>>
>>     сб, 13 янв. 2024 г., 03:26 Terje J. Hanssen via Cin
>>     <cin at lists.cinelerra-gg.org>:
>>
>>
>>
>>         Den 11.01.2024 23:43, skrev Terje J. Hanssen:
>>>         .......
>>
>>>         4 a) Cin-GG
>>>         Loaded a PAL 1080i/50 HDV clip
>>>         Set Format Preset: PAL 576i (16:9) - DV(D)
>>>         File Render File Format: FFmepg - avi (NB! because plain Raw
>>>         DV still causes DAR 4:3)
>>>                              Audio: Preset: avi_pcm_s16.avi
>>>                              Video: Compression: dv_pal.avi
>>>
>>
>>         For me it looks like the Set Format Preset: PAL 576i (16:9) -
>>         DV(D and/or the File Format: FFmpeg make up the correct DAR
>>         16:9 here, right?
>>
>>         Because by Selecting the Format: *Raw DV *cause rendering to
>>         *DAR 4:3* as shown below !
>>         This makes me wonder if it is only the FFmepg File formats
>>         that currently is fixed by patches?
>>         May also other non-FFmpeg formats be affected by anamorphic
>>         aspect ratios ?
>>
>>
>>     This is possible! I basically never used non-ffmpeg video
>>     encoders! I think we have 3 of them - raw dv, mpeg video and
>>     theora video.
>>
>>     I'll check each of them.
>
>     What about DVD Render (16:9) and BD Render from HDV source?
>     Are they for example quite independent of the Set Format Preset?
>
>
>
> I think yes .... I'll look into that too.
>
>

I have successful tested two cases DVD Render to iso from HDV source.
In both cases the Audio seemed to be locked to AC3 codec.
It could have been of interest to just copy without reencode/recompress 
the compliant MP2 audio from the HDV source.

1) Format PAL (25.00) 16x9 and default (mpeg2enc)

Stored and displayed seemingly correct with DAR 16:9 and full image (not 
cropped)

du -sh *
12M    dvd.ac3
4,0K    dvd.jobs
395M    dvd.m2v
413M    dvd.mpg
4,0K    dvd.sh
8,0K    dvd.xml
4,0K    iso


ffprobe -hide_banner dvd.mpg
[mpeg @ 0x5591efbbe580] start time for stream 0 is not set in 
estimate_timings_from_pts
Input #0, mpeg, from 'dvd.mpg':
   Duration: 00:06:58.08, start: 0.160000, bitrate: 8269 kb/s
   Stream #0:0[0x1bf]: Data: dvd_nav_packet
   Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, 
top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008 
vbv_delay: N/A
   Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s
Unsupported codec with id 100357 for input stream 0


2) Format PAL (25.00) 16x9 and FFmpeg

Stored and displayed seemingly correct with DAR 16:9 and full image (not 
cropped)

du -sh *
12M    dvd.ac3
4,0K    dvd.jobs
387M    dvd.m2v
404M    dvd.mpg
4,0K    dvd.sh
8,0K    dvd.xml
4,0K    iso


ffprobe -hide_banner dvd.mpg
[mpeg @ 0x559cbd650580] start time for stream 0 is not set in 
estimate_timings_from_pts
Input #0, mpeg, from 'dvd.mpg':
   Duration: 00:06:58.08, start: 0.160000, bitrate: 8100 kb/s
   Stream #0:0[0x1bf]: Data: dvd_nav_packet
   Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, 
bt709/unknown/unknown, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 
25 tbr, 90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008 
vbv_delay: N/A
   Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s
Unsupported codec with id 100357 for input stream 0

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