Hi, I have a problem with my zidoo z9x: if I convert and resync audio dts-hd ma (taken from 24 fps video ) to flac changing to 23.976 fps (for muxing with 23.976 fps video) during reproduction video stutters. Somebody could help me? Thanks
Why to 23.764? Simply stretch from 24 to (24000:1001) and output as FLAC. Eac3to can do that for you.
Ah, ok. I'm wondering how you did the audio conversion. Maybe the audio has an unsupported samplerate. If you didn't use eac3to, try it. It also can be helpful if you'd post mediainfo of the file.
Hi and thanks for yout replies... I tried converting my resynched audio (23,976 .flac from 24 fps DTS-HD MA) with x-media recode in .eac3 and always worked fine (same video muxed for both audio, .flac and .eac3). I tried other video files muxed with 23,976 .flac resynched from 24 fps DTS and everything was fine. For these reasons I think the problem is related to .flac from DTS-HD Ma. I haven't yet used eac3to, but I have used audacity changing from 24 fps to 23.976 and I have saved in .flac Like this: original audio info: Audio #2 ID : 3 Format : DTS XLL Format/Info : Digital Theater Systems Commercial name : DTS-HD Master Audio Codec ID : A_DTS Duration : 2 o 10 min Bit rate mode : Variabile Bit rate : 2.352 kb/s Channel(s) : 6 channels Channel layout : C L R Ls Rs LFE Sampling rate : 48,0 kHz Frame rate : 93,750 FPS (512 SPF) Bit depth : 16 bit Compression mode : No loss Delay relative to video : 4 ms Stream size : 2,14 GiB (6%) Default : No Forced : No resynched audio info (from dts-hd ma): Audio Format : FLAC Format/Info : Free Lossless Audio Codec Duration : 2 h 10 min Bit rate mode : Variable Bit rate : 3 015 kb/s Channel(s) : 6 channels Channel layout : L R C LFE Ls Rs Sampling rate : 48.0 kHz Bit depth : 24 bits Compression mode : Lossless Stream size : 2.75 GiB (100%) Writing library : libFLAC 1.3.1 (UTC 2014-11-25) converted eac3 audio info (from resynched .flac): Format : E-AC-3 Format/Info : Enhanced AC-3 Commercial name : Dolby Digital Plus Codec ID : A_EAC3 Duration : 2 h 10 min Bit rate mode : Constant Bit rate : 960 kb/s Channel(s) : 6 channels Channel layout : L R C LFE Ls Rs Sampling rate : 48.0 kHz Frame rate : 31.250 FPS (1536 SPF) Bit depth : 32 bits Compression mode : Lossy Stream size : 895 MiB (12%) Writing library : Lavc59.20.100 eac3 Service kind : Complete Main Default : No Forced : No video info: Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main 10@L5.1@High HDR format : SMPTE ST 2086, HDR10 compatible Codec ID : V_MPEGH/ISO/HEVC Duration : 2 h 10 min Bit rate : 3 674 kb/s Width : 3 840 pixels Height : 2 080 pixels Display aspect ratio : 1.85:1 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 10 bits Bits/(Pixel*Frame) : 0.019 Stream size : 3.34 GiB (93%) Default : Yes Forced : No Color range : Limited Color primaries : BT.2020 Transfer characteristics : PQ Matrix coefficients : BT.2020 non-constant Mastering display color primaries : Display P3 Mastering display luminance : min: 0.0001 cd/m2, max: 1000 cd/m2 Maximum Content Light Level : 267 cd/m2 Maximum Frame-Average Light Level : 89 cd/m2 summary: video+flac= stuttering video+eac3= ok Any ideas? Maybe some settings on zidoo z9x could make this problem?
Weird to see DTSMA source 16 bit in the first step going to FLAC 24bit. Secondly, in the second step bitdepth is going up to 32bit. At first sight, It doesn't make sense I don't know the reason, but something's definitely screwed up. Try latest portable UsEAC3to GUI package to convert in one step. Extract the zip, run UsEac3To.exe. If you need help with it, let me know. Download here: https://www.videohelp.com/download/eac3to334-UsEac3to132.zip [EDIT] Re-reading your post, I looked over the fact that eac3 audio is your desired end result. I'd still recommend to do the DTSMA stretching to FLAC with the tool I suggested.
To be honest no, I'd like to have a .flac with lpcm audio usable with my video but it seems zidoo have problem with flac from dts-hd ma... I'll try to resync and convert dts-hd ma audio with UsEAC3to GUI to .flac if it's possible and I'll try muxing resulting audio with video...then I'll play it and I'll discover if this is the solution
I have many multichannel FLAC tracks (also from DTSMA) and they all play back fine on all my mediaplayers, including the Z9X. The FLAC source being DTSMA shouldn't be an issue. Nor should audio streching/shrinking be. In your case of DTSMA 24fps to FLAC 23.976fps conversion, take a note of what eac3to internally would do in this specific order: 1 decode DTSMA into PCM 2 time-stretch PCM samples with a factor 1.001 3 resample PCM back to 48kHz 4 encode PCM to FLAC By default, bitdepth isn't changed. Again, I wouldn't know what exactly went wrong with your way of converting to synced FLAC. Looking at your case at an entirely other angle; you could change framerate of video to 24 fps...
Hi and sorry if I take so much time to respond but I have a few troubles. I have done a few test and it seems .flac audacity resynched (changing frame rate) was my problem. I tried with useac3to with good result but the output .flac hase lower bitrate than original. Any ideas to have lossless conversion? I used this command line, was it right? : 3: %_3eng.flac -24.000 -changeTo23.976 Thanks.
