<div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вс, 28 мая 2023 г., 16:51 Terje J. Hanssen via Cin <<a href="mailto:cin@lists.cinelerra-gg.org" rel="noreferrer noreferrer" target="_blank">cin@lists.cinelerra-gg.org</a>>:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Lately I have experimented with PAL DV to DVD rendering, both using
ffmpeg/DeVeDE, and now using CinGG mpeg2enc/FFMPEG<br>
<br>
I hope someone can help to clarify the following questions and debug
possible issues regarding DVD Rendering with CinGG:<br>
<br>
<br>
1. dvd.m2v and dvd.mpg<br>
Why are there two video files created, dvd.m2v w/o Audio and dvd.mpg
w/Audio, and which one is used for what?<br></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">I think m2v and ac3 (elementary streams) got muxed by mplex into mpg ...</div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<blockquote><font face="monospace">tree -sh dvd_20230528-115747<br>
dvd_20230528-115747<br>
├── [ 16M] dvd.ac3<br>
├── [3.4K] <a href="http://dvd.jobs" rel="noreferrer noreferrer noreferrer" target="_blank">dvd.jobs</a><br>
├── [562M] dvd.m2v<br>
├── [588M] dvd.mpg<br>
├── [ 733] dvd.sh<br>
├── [6.5K] dvd.xml<br>
└── [4.0K] iso<br>
├── [4.0K] AUDIO_TS<br>
└── [4.0K] VIDEO_TS<br>
├── [6.0K] VIDEO_TS.BUP<br>
├── [6.0K] VIDEO_TS.IFO<br>
├── [ 18K] VTS_01_0.BUP<br>
├── [ 18K] VTS_01_0.IFO<br>
└── [588M] VTS_01_1.VOB<br>
</font><br>
</blockquote>
2. Deinterlacing:<br>
<br>
The input PAL DV source file is Interlaced, Bottom Field First<br>
<blockquote><font face="monospace">ffprobe:</font><br>
<font face="monospace"> Stream #0:0: Video: dvvideo, none, 25000
kb/s, SAR 16:15 DAR 0:0, 25 fps, 25 tbr, 25 tbn</font><br>
<font face="monospace"> Stream #0:1: Audio: pcm_s16le, 48000 Hz,
stereo, s16, 1536 kb/s</font><br>
<font face="monospace">Unsupported codec with id 24 for input
stream 0</font><br>
</blockquote>
<blockquote><font face="monospace">mediainfo:<br>
Width : 720 pixels<br>
Height : 576 pixels<br>
Color space : YUV<br>
Scan type : Interlaced<br>
Scan order : Bottom Field First<br>
</font></blockquote>
<br>
Why does deinterlacing with dvd default rendering (mpeg2enc) still
come out as Interlaced, but Top Field first?<br></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">May be bug in mpeg2 output? Does it look interlaced, or it just flag set wrongly?</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<blockquote> <font face="monospace">ffprobe -hide_banner dvd.m2v<br>
Input #0, mpegvideo, from 'dvd.m2v':<br>
Duration: N/A, bitrate: N/A<br>
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 1200k
tbn<br>
Side data:<br>
cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008
vbv_delay: N/A<br>
<br>
<br>
ffprobe -hide_banner dvd.mpg<br>
[mpeg @ 0x55a756c7af00] start time for stream 0 is not set in
estimate_timings_from_pts<br>
Input #0, mpeg, from 'dvd.mpg':<br>
Duration: 00:09:56.44, start: 0.160000, bitrate: 8305 kb/s<br>
Stream #0:0[0x1bf]: Data: dvd_nav_packet<br>
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<br>
Side data:<br>
cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008
vbv_delay: N/A<br>
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224
kb/s<br>
Unsupported codec with id 98312 for input stream 0<br>
<br>
<br>
mediainfo dvd.m2v | egrep "Color|pixels|Scan"<br>
Width : 720 pixels<br>
Height : 576 pixels<br>
Color space : YUV<br>
Scan type : Interlaced<br>
Scan order : Top Field First<br>
Color primaries : BT.601 PAL<br>
<br>
<br>
mediainfo dvd.mpg | egrep "Color|pixels|Scan"<br>
Width : 720 pixels<br>
Height : 576 pixels<br>
Color space : YUV<br>
Scan type : Interlaced<br>
Scan order : Top Field First<br>
Color primaries : BT.601 PAL<br>
<br>
</font></blockquote>
While corresponding deinterlacing with the optional FFMPEG DVD
Rendering comes out as Progressive?<br>
<blockquote><font face="monospace">ffprobe -hide_banner dvd.m2v<br>
Input #0, mpegvideo, from 'dvd.m2v':<br>
Duration: N/A, bitrate: N/A<br>
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv,
bt470bg/unknown/unknown, progressive), 720x576 [SAR 64:45 DAR
16:9], 25 fps, 25 tbr, 1200k tbn<br>
Side data:<br>
cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008
vbv_delay: N/A<br>
</font><br>
<font face="monospace">ffprobe -hide_banner dvd.mpg<br>
[mpeg @ 0x561effba3f00] start time for stream 0 is not set in
estimate_timings_from_pts<br>
Input #0, mpeg, from 'dvd.mpg':<br>
Duration: 00:09:56.42, start: 0.160000, bitrate: 8266 kb/s<br>
Stream #0:0[0x1bf]: Data: dvd_nav_packet<br>
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv,
bt470bg/unknown/unknown, progressive), 720x576 [SAR 64:45 DAR
16:9], 25 fps, 25 tbr, 90k tbn<br>
Side data:<br>
cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008
vbv_delay: N/A<br>
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224
kb/s<br>
</font><br>
<font face="monospace">mediainfo dvd.m2v | egrep
"Color|pixels|Scan"<br>
Width : 720 pixels<br>
Height : 576 pixels<br>
Color space : YUV<br>
Scan type : Progressive<br>
<br>
mediainfo dvd.mpg | egrep "Color|pixels|Scan"<br>
Width : 720 pixels<br>
Height : 576 pixels<br>
Color space : YUV<br>
Scan type : Progressive<br>
<br>
</font></blockquote>
3. Dvd Interlaced Chroma <br>
<br>
With reference to the CinGG manual<br>
<a href="https://cinelerra-gg.org/download/CinelerraGG_Manual/Dvd_Interlaced_Chroma.html" rel="noreferrer noreferrer noreferrer" target="_blank">https://cinelerra-gg.org/download/CinelerraGG_Manual/Dvd_Interlaced_Chroma.html</a><br>
<br>
<blockquote><i>Now you can use the YUV420P DVD Interlace Mode when
rendering DV directly to mpeg2 through a yuv4mpeg stream and
when using video effects on HDV video.</i><br>
<i>With this option enabled, improved chroma results will be
obtained from your DV or HDV source. Editing DV or HDV and
rendering it back to the same format does not require any
special handling. In order to perform colorspace conversions
correctly in CINELERRA-GG and avoid Chroma errors for interlaced
4:2:0 video, check the box as follows:</i><br>
<br>
Settings → Performance → YUV420P DVD Interlace Mode <br>
</blockquote>
<br>
I can't find this option and is it relevant for DVD rendering?<br></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Its in Interface section ..</div><div dir="auto"><br></div><div dir="auto">I can attach screenshot separately.</div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<br>
<br>
4. Missing FFMPEG output<br>
<br>
According to the manual:<br>
<a href="https://cinelerra-gg.org/download/CinelerraGG_Manual/DVD_Bluray_Creation.html" rel="noreferrer noreferrer noreferrer" target="_blank">https://cinelerra-gg.org/download/CinelerraGG_Manual/DVD_Bluray_Creation.html</a>
<br>
<blockquote>
I<i>t is also highly recommended to run the CINELERRA-GG startup
from a terminal window, instead of the icon, in order to see
informative messages of how to actually write the output (at
prompt: keyin <install_directory_path/bin/cin).
</i><br>
<br>
</blockquote>
For the default mpeg2enc DVD rendering there is output like<br>
<blockquote>mpeg2enc -v 0 -b 8000 -q 1 -a 3 -F 3 -H -I 1 -M 8 -z t
-f 8 -g 15 -G 15 -R 0 -o
'/home/terje/Videoklipp/DVD/dvd_mpeg2enc_20230527-184531/dvd.m2v'<br>
</blockquote>
For the optional FFMEG DVD Rendering it would be nice to also get
the actual "ffmpeg code line" as terminal output, both for learning,
customizing and debugging.<br>
Is that possible ?<br></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">Ffmpeg dvd uses libavcodec directly, if I remember correctly. You still can edit dvd profile, at least if you installed cingg as usual (appimage probably can be extracted and modified too). look for dvd</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">===</div><div dir="auto"><div dir="auto">cat bin/ffmpeg/video/dvd.dvd</div><div dir="auto">dvd mpeg2video</div><div dir="auto">s 720x480</div><div dir="auto">r 30000/1001</div><div dir="auto">pixel_format yuv420p</div><div dir="auto">g 18</div><div dir="auto">maxrate 9000000</div><div dir="auto">minrate 0</div><div dir="auto">bufsize 1835008</div><div dir="auto">packetsize 2048</div><div dir="auto">cin_bitrate=8000000</div><div dir="auto"><br></div><div dir="auto">for user-installed cin </div></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>
<br>
<br>
<br>
<br>
<br>
<br>
</div>
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</blockquote></div></div></div>