[Discuss-gnuradio] dtv-questions

2015-05-17 Thread Ralph A. Schmid, dk5ras
Hi, when playing with DVB-T2, I see there are example ts files of different size, somehow optimized for the transmission mode, 4k or 8k, 64QAM or 256QAM. Now when I have a look at them with my recoding software, they all look identical, same bitrate and stuff, just different size. So I wond

Re: [Discuss-gnuradio] dtv-questions

2015-05-17 Thread Rafael Diniz
Hi Ralph, I don't think there is something specific inside the TS for a transmission mode, unless there are some packets or packet complement, just like in ISDB-T (I do not know too much about DVB-T2), where you place information of which PID goes to which hierarchical layer. All you have to

Re: [Discuss-gnuradio] dtv-questions

2015-05-17 Thread Ron Economos
The primary requirement is to the set the Transport Stream bitrate properly. Otherwise, you'll get audio or video stuttering. For DVB-T, the bitrate calculation is straight forward, and there are only so many combinations. I have a command line utility here. https://github.com/drmpeg/dtv-utils

Re: [Discuss-gnuradio] dtv-questions

2015-05-17 Thread Ralph A. Schmid, dk5ras
. Ralph. > -Original Message- > From: Rafael Diniz [mailto:raf...@riseup.net] > Sent: Sunday, May 17, 2015 4:48 PM > To: Ralph A. Schmid, dk5ras > Cc: discuss-gnuradio@gnu.org > Subject: Re: [Discuss-gnuradio] dtv-questions > > Hi Ralph, > > I don't think

Re: [Discuss-gnuradio] dtv-questions

2015-05-18 Thread Ralph A. Schmid, dk5ras
@gnu.org Subject: Re: [Discuss-gnuradio] dtv-questions The primary requirement is to the set the Transport Stream bitrate properly. Otherwise, you'll get audio or video stuttering. For DVB-T, the bitrate calculation is straight forward, and there are only so many combinations. I have a command