On Fri, Aug 26, 2022 at 10:23 PM <rfische...@gmail.com> wrote: > Thanks, Paul > You are a genius. Your command worked with the two files I had sent you. I > am now getting playback on the dCS Rossini from the beginning and (as far > as I can hear) gapless playback between 4 and 5. > However, I still have an inkling that not all is well > I have attached the log of the two conversions that I did. Chapter 4 seems > to convert ok with some messages but (as I see it) nothing serious. However > Chapter 5 (the one that previously converted to 48kHz) has some serious > error messages. Playback of the flac file seems ok. > The dts file was extracted from the BluRay using DVDAE and the 'direct > stream demux' option. Ffmpeg has more issues with some extracted "dts > files than with others. Could it be that the issue is already at the stage > of the 'direct stream demux' option? > As I am getting exactly the same results (same files extract @48kHz) using > MakeMKV / MMH, there could be a problem at the ripping stage of the BluRay > and not primarily with ffmpeg? What do you think? > Best regards > Rudi > > I do not think it is ripping stage. It is how content was originally produced. I also noticed some strange error at end of chapter 5. So to be 100% sure it is still ok, check for gapless between chapter 5 and 6 (if there is 6 chapter or whatever comes next). There is very slight chance that there is no delay in any of dts files but I doubt that because decoder follows specification 100% AFAIK.
> > > > -----Original Message----- > From: ffmpeg-user <ffmpeg-user-boun...@ffmpeg.org> On Behalf Of Paul B > Mahol > Sent: Friday, 26. August 2022 21:57 > To: FFmpeg user questions <ffmpeg-user@ffmpeg.org> > Subject: Re: [FFmpeg-user] Error decoding DTS-HD MA audio files > > On Fri, Aug 26, 2022 at 4:12 PM <rfische...@gmail.com> wrote: > > > Hello > > > > Am trying to extract DTS-HD MA audio files from the following Blu-Ray > > (which I physically purchased) > > > > KARL RICHTER - J.S. Bach: Cantatas - Pure Audio Recordings < > > https://pureaudiorecordings.com/en/product/karl-richter-j-s-bach-canta > > tas/ > > > > > > > > > I am getting the same result both with DVDAE and with MakeMKV / MMH > > which I believe both use ffmpeg to extract DTS-HD MA. About 80% of the > > tracks are correctly extracted to 24/192kHz files and around 20% of > > the tracks are extracted to 24/48kHz files which play back at ΒΌ speed. > > I then corrected the speed using > > > > > > > > ffmpeg -i 1.flac -af asetrate=192000 2.flac > > > > > > > > This now works on some of my playback equipment. However when I launch > > playback of a converted file, it shows 0/192kHz for around 5 seconds > > and only then locks to the 24/192kHz stream and plays back. This > > happens with files that were correctly extracted to 192kHz and to > > those that I had to speed up after the fact. So there seems to be > > something fundamentally wrong with the ffmpeg extraction of this > > BluRay > > > > > > > > I have prepared some sample files on one drive > > > > https://1drv.ms/u/s!AmpEbEYrlrk5lWGskTYvPp0iv4L3?e=U7kCRC > > > > Chapter 4 extracts correctly to 192kHz > > > > Chapter 5 extracts to 48kHz > > > > The Chapter 5 file dts-hd-ma have certain delay. Thus you get with ffmpeg > first few frames in only dts core at 48kHz 16bit and later full dts-hd-ma > kicks in with 192kHz and 32bit, but because filtering is not supporting > changing of sample rate and/or sample format at runtime all remaining > frames are filtered back to 48kHz and 16bit. This is evident if you run > ffmpeg with '-v debug' > flag. > > Workaround is to force filtering at 192kHz and 32bit right at start with > this command: > > ffmpeg -i Title1\ -\ Chapter\ 05.dts -af aformat=f=s32p:r=192000:cl=stereo > out.flac > > > > > > > > Both flac extract to not play back correctly on dCS Rossini > > > > Hardware playback of 24bit flac at 192000 Hz is not widely supported AFAIK. > > > > > > > > > > Could you please take a look at this? Thanks a lot > > > > Rudi > > > > > > > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org > with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".