Re: New build with Lime - H264 not working.
Posted: Mon Apr 15, 2019 6:37 pm
Hi Nick
There do seem to be some issues with the latest release (also reported by G4HIZ), however, I'm struggling to put my finger on them.
As a general rule, S2QPSK modulation (MPEG-2 or H264) works much better that DVB-S. Most of my testing was with DVB-S2 QPSK as this is the mode of choice for QO-100. Also, the EasyCap and Pi Camera modes work better than the static test card or Animated Test Card.
That said, some of the most prolific signals on the satellite (G4KLB and G7JTT) are using this build quite successfully, and I was only able to reproduce the fault condition with DVB-S static test card at 333KS. DVB-S with a Pi Cam worked perfectly for me.
I'll keep looking at it, but perhaps you could try DVB-S2 QPSK and see if it is useable for you. It seems very unlikely to be a LimeSDR issue if MPEG-2 works well. It's almost certainly a software issue that I have been unable to diagnose and solve.
Please persist with MPEG-2 or other modes that work for you and I'll try to make some improvements in the next release.
Dave, G8GKQ
There do seem to be some issues with the latest release (also reported by G4HIZ), however, I'm struggling to put my finger on them.
As a general rule, S2QPSK modulation (MPEG-2 or H264) works much better that DVB-S. Most of my testing was with DVB-S2 QPSK as this is the mode of choice for QO-100. Also, the EasyCap and Pi Camera modes work better than the static test card or Animated Test Card.
That said, some of the most prolific signals on the satellite (G4KLB and G7JTT) are using this build quite successfully, and I was only able to reproduce the fault condition with DVB-S static test card at 333KS. DVB-S with a Pi Cam worked perfectly for me.
I'll keep looking at it, but perhaps you could try DVB-S2 QPSK and see if it is useable for you. It seems very unlikely to be a LimeSDR issue if MPEG-2 works well. It's almost certainly a software issue that I have been unable to diagnose and solve.
Please persist with MPEG-2 or other modes that work for you and I'll try to make some improvements in the next release.
Dave, G8GKQ