I couldn't help myself and just tried remotely, it appears I might have gotten some part to work. In one terminal, i run:
ffmpeg -format_code Hp25 -f Decklink -duplex_mode half -i 'DeckLink Duo (1)' -c:v libx264 -preset ultrafast -map 0 -segment_time 20s -f segment /media/primary/rolrec_cam3/output%03d.mp4 setting the duplex_mode of DeckLink Duo (1) to half duplex. This run just fine. Then in a second terminal window I run: ffmpeg -format_code Hp25 -f Decklink -duplex_mode half -i 'DeckLink Duo (3)' -c:v libx264 -preset ultrafast -map 0 -segment_time 20s -f segment /media/primary/rolrec-cam2/output%03d.mp4 This also starts recording, However, since I'm not at the office, I can't actually check. Thinking a step further, when I run: ffmpeg -format_code Hp25 -f Decklink 'DeckLink Duo (1)' -duplex_mode half -f Decklink -i 'DeckLink Duo (3)' -c:v libx264 -preset ultrafast -map 0 -segment_time 20s -f segment /media/primary/rolrec-cam2/output%03d.mp4 It gives me the following output: [decklink @ 0x56122ec124c0] Cannot Autodetect input stream or No signal DeckLink Duo (3): Input/output error Which makes me slightly hopeful this might actually work tomorrow when I plug an actual camera feed into DeckLink Duo (3). Previously my errors have said can't enable video input, that's now gone, right now it just doesn't detect any input (which is factual as no camera is connected). Let's see tomorrow, step by step I guess! Thanks all so far. Any comments from people if they think this might work or better ways are also appreciated! Rik On Wed, Aug 7, 2019 at 8:06 PM Rik Roukens <[email protected]> wrote: > Thanks for your response Mustafa, the cards are definitely capable of it, > as I've done it in windows. > perhaps you need to set the duplex mode on 1 and 2, which then opens up sdi > 3&4 to be individually programmed. > I'll give that a go tomorrow, it sounds a bit strange, as it would mean > that you always have to run a command on input 1 and 2 before you are > 'allowed' to use sdi input 3 and 4. > > I'll report back tomorrow. > > Rik > > > *Rik Roukens*Head of Broadcast Technology & Multimedia > Mobile & Whatsapp. +34 680839000 > Skype. rikroukens > Twitter. @rroukens <https://twitter.com/rroukens> > > *The Ocean Race. * > Muelle nº10 de Levante > Puerto de Alicante > 03001 Alicante, Spain > *theoceanrace.com* <http://www.volvooceanrace.com/> > > > On Wed, 7 Aug 2019 at 19:48, Mustafa Al Ani <[email protected]> wrote: > > > Hi Rik, > > > > I think the duplex mode is only supported in ports 1&2. > > > > Apart from that, I have never been able to enable video input on 3&4, I > > spoke with Blackmagic support but never got a useful answer. Never trust > > what they write in their products descriptions. > > > > Please let me know if you got video input on 3&4, I would very much like > to > > see it working. > > > > Regards, > > Mustafa > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > > -- > > > > > > > > > > > The information in this email and in any attachments is > confidential and may be privileged. If you are not the intended recipient, > please destroy this message, delete any copies held on your systems and > notify the sender immediately. You should not retain, copy or use this > email for any purpose, nor disclose all or any part of its contents to any > other person. Atlant Ocean Racing Spain SL, a company registered in Spain. > B76239177. > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
