On Friday, December 17, 2021, Terje J. Hanssen <[email protected]> wrote:
> > > Den 16.12.2021 20:08, skrev Andrew Randrianasulu: > >> >> >> On Thursday, December 16, 2021, Terje J. Hanssen via Cin < >> [email protected]> wrote: >> >> [......] >> >> As I already pointed on in another thread, a solution to capture >> Hi8 to SD DV50 in 4:2:2 format was possible already 10 years ago >> https://lists.cinelerra-gg.org/pipermail/cin/2021-December/ >> 004308.html >> <https://lists.cinelerra-gg.org/pipermail/cin/2021-December/ >> 004308.html> >> >> In a more recent thread here, Andrew mentioned a hdmi capture card >> (with v4l2) >> https://www.mail-archive.com/[email protected]/msg02865.html >> <https://www.mail-archive.com/[email protected]/msg >> 02865.html> >> =================== >> >> Therefore I wonder if we, CinGG users and devs, are able to setup >> and test a recommended capture solution (w/card and guide) for SD >> and HD video in 4:2:2 colorspace, preferably using free drivers >> and tools like V4L/V4L2 and FFMpeg? >> https://en.wikipedia.org/wiki/Video4Linux >> <https://en.wikipedia.org/wiki/Video4Linux> >> https://www.linuxtv.org/wiki/index.php/V4L_capturing >> <https://www.linuxtv.org/wiki/index.php/V4L_capturing> >> >> >> I think I personally will be away from my desktop machine for few more >> months.. >> >> Terje, you already subscribed to ffmpeg-users, may be forward your call >> for testing to this list too? >> >> I was think about one specific Youtuber >> https://www.youtube.com/user/renerebe >> >> 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 :-) >> >> >> 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: > https://cinelerra-gg.org/download/CinelerraGG_Manual/Transfe > r_VHS_DVD_Media_or_V.html > > Regardless, as mentioned would part of this be to evaluate more current > capture cards with preV4L2 Linux support. > > 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 > http://trac.gateworks.com/wiki/Yocto/Video_In > http://trac.gateworks.com/wiki/linux/v4l2 > http://trac.gateworks.com/wiki/ventana#BoardSupportPackagesBSPSoftware > > is there possibility they talk about single-board computers and their embedded video chips? (not something you can plug into desktop/laptop..) > =============== > > 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? > > ----------------- > > 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: > > ffmpeg -i SD-MOV.mov -target pal-dv50 SD-DV50.dv > > ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers > built with gcc 11 (SUSE Linux) > [...] > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SD-MOV.mov': > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > Duration: 00:00:29.84, start: 0.000000, bitrate: 79620 kb/s > 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) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Video Media Handler > vendor_id : appl > encoder : Apple ProRes 422 (HQ) > Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, > hexadecagonal, s32 (24 bit), 18432 kb/s (default) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Sound Media Handler > vendor_id : [0][0][0][0] > [....] > Stream mapping: > Stream #0:0 -> #0:0 (prores (native) -> dvvideo (native)) > Stream #0:1 -> #0:1 (pcm_s24le (native) -> pcm_s16le (native)) > Press [q] to stop, [?] for help > Output #0, dv, to 'SD-DV50.dv': > Metadata: > encoder : Lavf58.76.100 > 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) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Video Media Handler > vendor_id : appl > encoder : Lavc58.134.100 dvvideo > Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s > (default) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Sound Media Handler > vendor_id : [0][0][0][0] > encoder : Lavc58.134.100 pcm_s16le > frame= 746 fps=346 q=-0.0 Lsize= 209531kB time=00:00:29.84 > bitrate=57522.8kbits/s speed=13.8x > video:209812kB audio:5595kB subtitle:0kB other streams:0kB global > headers:0kB muxing overhead: unknown > > =================== > > du -sh *mov *dv > 284M SD-MOV.mov (source digitized from Hi8) > 205M SD-DV50.dv (ffmpeg re-encoded/remuxed) > > DV50 size is here 72% of MOV (though other ProRes 422 and ProRes 422 LT > has even lower bitrates). > > ------------------- > > 284M SD-MOV.mov (source digitized from Hi8) AV-info: > > avprobe SD-MOV.mov > avprobe version 12.3, Copyright (c) 2007-2018 the Libav developers > built on Mar 26 2018 12:39 with gcc 11 (SUSE Linux) > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'SD-MOV.mov': > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > Duration: 00:00:29.84, start: 0.000000, bitrate: 79620 kb/s > 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) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Video Media Handler > vendor_id : appl > encoder : Apple ProRes 422 (HQ) > Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 > channels, s32 (24 bit), 18432 kb/s (default) > Metadata: > creation_time : 2016-02-26T02:24:01.000000Z > handler_name : Apple Sound Media Handler > vendor_id : [0][0][0][0] > # avprobe output > ---------------------- > > 205M SD-DV50.dv (ffmpeg re-encoded/remuxed) AV-info: > > avprobe SD-DV50.dv > avprobe version 12.3, Copyright (c) 2007-2018 the Libav developers > built on Mar 26 2018 12:39 with gcc 11 (SUSE Linux) > [dv @ 0x55cdddb96440] Estimating duration from bitrate, this may be > inaccurate > Input #0, dv, from 'SD-DV50.dv': > Metadata: > timecode : 00:00:00:00 > Duration: 00:00:29.80, start: 0.000000, bitrate: 57600 kb/s > Stream #0:0: Video: dvvideo, yuv422p, 720x576 [SAR 16:15 DAR 4:3], 25000 > kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc > Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s > Stream #0:2: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s > # avprobe output > > =================== > > 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). > > My VLC player or Gnome movieplayer did not playback the DV50 file, while > ffplay did (as usual without audio?). > > Cin-GG miss a DV50 preset among format setting. However DV50 else loades > preliminary OK in Cin-GG (via ffmpeg). I'll look at dv50 output preset.. > > ----------------- > > Terje J. H > > >
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