вс, 28 мая 2023 г., 16:51 Terje J. Hanssen via Cin < [email protected]>:
> Lately I have experimented with PAL DV to DVD rendering, both using > ffmpeg/DeVeDE, and now using CinGG mpeg2enc/FFMPEG > > I hope someone can help to clarify the following questions and debug > possible issues regarding DVD Rendering with CinGG: > > > 1. dvd.m2v and dvd.mpg > Why are there two video files created, dvd.m2v w/o Audio and dvd.mpg > w/Audio, and which one is used for what? > I think m2v and ac3 (elementary streams) got muxed by mplex into mpg ... > tree -sh dvd_20230528-115747 > dvd_20230528-115747 > ├── [ 16M] dvd.ac3 > ├── [3.4K] dvd.jobs > ├── [562M] dvd.m2v > ├── [588M] dvd.mpg > ├── [ 733] dvd.sh > ├── [6.5K] dvd.xml > └── [4.0K] iso > ├── [4.0K] AUDIO_TS > └── [4.0K] VIDEO_TS > ├── [6.0K] VIDEO_TS.BUP > ├── [6.0K] VIDEO_TS.IFO > ├── [ 18K] VTS_01_0.BUP > ├── [ 18K] VTS_01_0.IFO > └── [588M] VTS_01_1.VOB > > 2. Deinterlacing: > > The input PAL DV source file is Interlaced, Bottom Field First > > ffprobe: > Stream #0:0: Video: dvvideo, none, 25000 kb/s, SAR 16:15 DAR 0:0, 25 > fps, 25 tbr, 25 tbn > Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s > Unsupported codec with id 24 for input stream 0 > > mediainfo: > Width : 720 pixels > Height : 576 pixels > Color space : YUV > Scan type : Interlaced > Scan order : Bottom Field First > > > Why does deinterlacing with dvd default rendering (mpeg2enc) still come > out as Interlaced, but Top Field first? > May be bug in mpeg2 output? Does it look interlaced, or it just flag set wrongly? ffprobe -hide_banner dvd.m2v > Input #0, mpegvideo, from 'dvd.m2v': > Duration: N/A, bitrate: N/A > Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg, top first), > 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 1200k tbn > Side data: > cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008 > vbv_delay: N/A > > > ffprobe -hide_banner dvd.mpg > [mpeg @ 0x55a756c7af00] start time for stream 0 is not set in > estimate_timings_from_pts > Input #0, mpeg, from 'dvd.mpg': > Duration: 00:09:56.44, start: 0.160000, bitrate: 8305 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 > 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 98312 for input stream 0 > > > mediainfo dvd.m2v | egrep "Color|pixels|Scan" > Width : 720 pixels > Height : 576 pixels > Color space : YUV > Scan type : Interlaced > Scan order : Top Field First > Color primaries : BT.601 PAL > > > mediainfo dvd.mpg | egrep "Color|pixels|Scan" > Width : 720 pixels > Height : 576 pixels > Color space : YUV > Scan type : Interlaced > Scan order : Top Field First > Color primaries : BT.601 PAL > > While corresponding deinterlacing with the optional FFMPEG DVD Rendering > comes out as Progressive? > > ffprobe -hide_banner dvd.m2v > Input #0, mpegvideo, from 'dvd.m2v': > Duration: N/A, bitrate: N/A > 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 > Side data: > cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008 > vbv_delay: N/A > > ffprobe -hide_banner dvd.mpg > [mpeg @ 0x561effba3f00] start time for stream 0 is not set in > estimate_timings_from_pts > Input #0, mpeg, from 'dvd.mpg': > Duration: 00:09:56.42, start: 0.160000, bitrate: 8266 kb/s > Stream #0:0[0x1bf]: Data: dvd_nav_packet > 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 > 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 > > mediainfo dvd.m2v | egrep "Color|pixels|Scan" > Width : 720 pixels > Height : 576 pixels > Color space : YUV > Scan type : Progressive > > mediainfo dvd.mpg | egrep "Color|pixels|Scan" > Width : 720 pixels > Height : 576 pixels > Color space : YUV > Scan type : Progressive > > 3. Dvd Interlaced Chroma > > With reference to the CinGG manual > > https://cinelerra-gg.org/download/CinelerraGG_Manual/Dvd_Interlaced_Chroma.html > > *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.* > *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:* > > Settings → Performance → YUV420P DVD Interlace Mode > > > I can't find this option and is it relevant for DVD rendering? > Its in Interface section .. I can attach screenshot separately. > > > 4. Missing FFMPEG output > > According to the manual: > > https://cinelerra-gg.org/download/CinelerraGG_Manual/DVD_Bluray_Creation.html > > 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). * > > For the default mpeg2enc DVD rendering there is output like > > 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' > > 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. > Is that possible ? > 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 === cat bin/ffmpeg/video/dvd.dvd dvd mpeg2video s 720x480 r 30000/1001 pixel_format yuv420p g 18 maxrate 9000000 minrate 0 bufsize 1835008 packetsize 2048 cin_bitrate=8000000 for user-installed cin > > > > > > > -- > Cin mailing list > [email protected] > https://lists.cinelerra-gg.org/mailman/listinfo/cin >
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