<br><br>On Friday, December 17, 2021, Terje J. Hanssen <<a href="mailto:terjejhanssen@gmail.com">terjejhanssen@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
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Den 16.12.2021 20:08, skrev Andrew Randrianasulu:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<br>
On Thursday, December 16, 2021, Terje J. Hanssen via Cin <<a href="mailto:cin@lists.cinelerra-gg.org" target="_blank">cin@lists.cinelerra-gg.org</a>> wrote:<br>
<br>
[......]<br>
<br>
As I already pointed on in another thread, a solution to capture<br>
Hi8 to SD DV50 in 4:2:2 format was possible already 10 years ago<br>
<a href="https://lists.cinelerra-gg.org/pipermail/cin/2021-December/004308.html" target="_blank">https://lists.cinelerra-gg.org<wbr>/pipermail/cin/2021-December/<wbr>004308.html</a><br>
<<a href="https://lists.cinelerra-gg.org/pipermail/cin/2021-December/004308.html" target="_blank">https://lists.cinelerra-gg.or<wbr>g/pipermail/cin/2021-December/<wbr>004308.html</a>><br>
<br>
In a more recent thread here, Andrew mentioned a hdmi capture card<br>
(with v4l2)<br>
<a href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02865.html" target="_blank">https://www.mail-archive.com/c<wbr>in@lists.cinelerra-gg.org/msg0<wbr>2865.html</a><br>
<<a href="https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02865.html" target="_blank">https://www.mail-archive.com/<wbr>cin@lists.cinelerra-gg.org/msg<wbr>02865.html</a>><br>
===================<br>
<br>
Therefore I wonder if we, CinGG users and devs, are able to setup<br>
and test a recommended capture solution (w/card and guide) for SD<br>
and HD video in 4:2:2 colorspace, preferably using free drivers<br>
and tools like V4L/V4L2 and FFMpeg?<br>
<a href="https://en.wikipedia.org/wiki/Video4Linux" target="_blank">https://en.wikipedia.org/wiki/<wbr>Video4Linux</a><br>
<<a href="https://en.wikipedia.org/wiki/Video4Linux" target="_blank">https://en.wikipedia.org/wiki<wbr>/Video4Linux</a>><br>
<a href="https://www.linuxtv.org/wiki/index.php/V4L_capturing" target="_blank">https://www.linuxtv.org/wiki/i<wbr>ndex.php/V4L_capturing</a><br>
<<a href="https://www.linuxtv.org/wiki/index.php/V4L_capturing" target="_blank">https://www.linuxtv.org/wiki/<wbr>index.php/V4L_capturing</a>><br>
<br>
<br>
I think I personally will be away from my desktop machine for few more months..<br>
<br>
Terje, you already subscribed to ffmpeg-users, may be forward your call for testing to this list too?<br>
<br>
I was think about one specific Youtuber<br>
<a href="https://www.youtube.com/user/renerebe" target="_blank">https://www.youtube.com/user/r<wbr>enerebe</a><br>
<br>
he does have quite a bit of exotic/non-x86 hw, so may be he will be able to get capture card(s) we talked about and even compile Cin on some non-x86 devices and/or test our BD output on Playstation 3 :-)<br>
<br>
<br>
</blockquote>
Well, I posted a few topics at ffmpeg-users some years ago. Time will tell - this "project" is nor hurry, as we have several other tasks to complete. I had preferably thought this as a possibly updated testcase for video capturing withing CinGG as here in the manual:<br>
<a href="https://cinelerra-gg.org/download/CinelerraGG_Manual/Transfer_VHS_DVD_Media_or_V.html" target="_blank">https://cinelerra-gg.org/downl<wbr>oad/CinelerraGG_Manual/Transfe<wbr>r_VHS_DVD_Media_or_V.html</a><br>
<br>
Regardless, as mentioned would part of this be to evaluate more current capture cards with preV4L2 Linux support.<br>
<br>
I just googled around and without knowing their actuality or price levels for con-/pro-sumers, one name Gateworks at least seems to promote V4L2 heavily in their product wikies, i.e<br>
<a href="http://trac.gateworks.com/wiki/Yocto/Video_In" target="_blank">http://trac.gateworks.com/wiki<wbr>/Yocto/Video_In</a><br>
<a href="http://trac.gateworks.com/wiki/linux/v4l2" target="_blank">http://trac.gateworks.com/wiki<wbr>/linux/v4l2</a><br>
<a href="http://trac.gateworks.com/wiki/ventana#BoardSupportPackagesBSPSoftware" target="_blank">http://trac.gateworks.com/wiki<wbr>/ventana#BoardSupportPackagesB<wbr>SPSoftware</a><br>
<br></blockquote><div><br></div><div>is there possibility they talk about single-board computers and their embedded video chips? (not something you can plug into desktop/laptop..) </div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
===============<br>
<br>
I-frame-only 50 Megabit MPEG-2 or comparable DV50 in 4:2:2 as high-end, "visual lossless" intermediate format for archival and suited for editing?<br>
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-----------------<br>
<br>
Regarding DV50, FFMpeg has a friendly "target dv50" support (similar as "target DVD"). So to get a first look on a DV50 test file, I simply transcoded 422/10bit Video and PCM audio from a MOV file (ProRes 422HQ) to a raw DV50 (422/8bit) file:<br>
<br>
ffmpeg -i SD-MOV.mov -target pal-dv50 SD-DV50.dv<br>
<br>
ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers<br>
built with gcc 11 (SUSE Linux)<br>
[...]<br>
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SD-MOV.mov':<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
Duration: 00:00:29.84, start: 0.000000, bitrate: 79620 kb/s<br>
Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061), yuv422p10le(tv, bt709/unknown/unknown, top coded first (swapped)), 720x576, 61154 kb/s, SAR 59:54 DAR 295:216, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Video Media Handler<br>
vendor_id : appl<br>
encoder : Apple ProRes 422 (HQ)<br>
Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, hexadecagonal, s32 (24 bit), 18432 kb/s (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Sound Media Handler<br>
vendor_id : [0][0][0][0]<br>
[....]<br>
Stream mapping:<br>
Stream #0:0 -> #0:0 (prores (native) -> dvvideo (native))<br>
Stream #0:1 -> #0:1 (pcm_s24le (native) -> pcm_s16le (native))<br>
Press [q] to stop, [?] for help<br>
Output #0, dv, to 'SD-DV50.dv':<br>
Metadata:<br>
encoder : Lavf58.76.100<br>
Stream #0:0(eng): Video: dvvideo, yuv422p(tv, bt709/unknown/unknown, top coded first (swapped)), 720x576 [SAR 59:54 DAR 295:216], q=2-31, 200 kb/s, 25 fps, 25 tbn (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Video Media Handler<br>
vendor_id : appl<br>
encoder : Lavc58.134.100 dvvideo<br>
Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Sound Media Handler<br>
vendor_id : [0][0][0][0]<br>
encoder : Lavc58.134.100 pcm_s16le<br>
frame= 746 fps=346 q=-0.0 Lsize= 209531kB time=00:00:29.84 bitrate=57522.8kbits/s speed=13.8x<br>
video:209812kB audio:5595kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown<br>
<br>
===================<br>
<br>
du -sh *mov *dv<br>
284M SD-MOV.mov (source digitized from Hi8)<br>
205M SD-DV50.dv (ffmpeg re-encoded/remuxed)<br>
<br>
DV50 size is here 72% of MOV (though other ProRes 422 and ProRes 422 LT has even lower bitrates).<br>
<br>
-------------------<br>
<br>
284M SD-MOV.mov (source digitized from Hi8) AV-info:<br>
<br>
avprobe SD-MOV.mov<br>
avprobe version 12.3, Copyright (c) 2007-2018 the Libav developers<br>
built on Mar 26 2018 12:39 with gcc 11 (SUSE Linux)<br>
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SD-MOV.mov':<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
Duration: 00:00:29.84, start: 0.000000, bitrate: 79620 kb/s<br>
Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061), yuv422p10le(tv, bt709/unknown/unknown, top coded first (swapped)), 720x576, 61154 kb/s, SAR 59:54 DAR 295:216, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Video Media Handler<br>
vendor_id : appl<br>
encoder : Apple ProRes 422 (HQ)<br>
Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32 (24 bit), 18432 kb/s (default)<br>
Metadata:<br>
creation_time : 2016-02-26T02:24:01.000000Z<br>
handler_name : Apple Sound Media Handler<br>
vendor_id : [0][0][0][0]<br>
# avprobe output<br>
----------------------<br>
<br>
205M SD-DV50.dv (ffmpeg re-encoded/remuxed) AV-info:<br>
<br>
avprobe SD-DV50.dv<br>
avprobe version 12.3, Copyright (c) 2007-2018 the Libav developers<br>
built on Mar 26 2018 12:39 with gcc 11 (SUSE Linux)<br>
[dv @ 0x55cdddb96440] Estimating duration from bitrate, this may be inaccurate<br>
Input #0, dv, from 'SD-DV50.dv':<br>
Metadata:<br>
timecode : 00:00:00:00<br>
Duration: 00:00:29.80, start: 0.000000, bitrate: 57600 kb/s<br>
Stream #0:0: Video: dvvideo, yuv422p, 720x576 [SAR 16:15 DAR 4:3], 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc<br>
Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s<br>
Stream #0:2: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s<br>
# avprobe output<br>
<br>
===================<br>
<br>
As seen above, it looks like ffmpeg produced wrong meta data for the DV50 video bitrate (25 Mb/s=DV25), while the total bitrate 57.6 Mb/s is correct. (Also similar was seen with ffprobe and Mediainfo).<br>
<br>
My VLC player or Gnome movieplayer did not playback the DV50 file, while ffplay did (as usual without audio?).<br>
<br>
Cin-GG miss a DV50 preset among format setting. However DV50 else loades preliminary OK in Cin-GG (via ffmpeg).</blockquote><div><br></div><div>I'll look at dv50 output preset.. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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-----------------<br>
<br>
Terje J. H<br>
<br>
<br>
</blockquote>