Hello,
I am encoding all of my movie DVDs into MP4 files to use them for adaptive streaming (6 different bit rates).
I am using MeGUI for this encoding and everything seems to be pretty good except some few a/v sync issues.
Many of my DVDs have full interlaced content or partial interlaced content.
So, after selecting my input, I am doing "Analysis" of the input and selecting the deinterlace filter suggested by MeGUI.
For many of the DVDs, it is "TIVTC".
After that, I am selecting custom parameters for X264 and doing AAC audio encoding using Nero.
Then, muxing the streams into MP4 using MP4 muxer.
For all the outputs, I see a little a/v sync issues. The sync issue appears & disappears automatically for every 2 to 3 minutes. The issue looks as a cycle.
If it is constant, I might have adjusted the delay. But, it is coming as cycles.
Could you please suggest me something to fix this issue?
Thank you for your time!
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Here is more info:
When I extract .VOB from DVD, DVDDecrypter created the following log:
Code:Stream Type: MPEG2 Program Profile: main@main Frame Size: 720x480 Display Size: [not specified] Aspect Ratio: 16:9 [3] Frame Rate: 29.970030 fps Video Type: NTSC Frame Type: Interlaced Coding Type: B Colorimetry: BT.470-2 B,G* Frame Structure: Frame Field Order: Coded Number: 280211 Playback Number: 2 Frame Repeats: 0 Field Repeats: 0 VOB ID: 1 Cell ID: 28 Bitrate: Bitrate (Avg): Bitrate (Max): Audio Stream: 80: AC3 3/2 448 Timestamp: 2:35:49 Elapsed: 0:01:21 Remain: FINISH FPS: Info:
Below is the info from MediaInfo tool:
Code:General Complete name : D:\Source\MyTestVideo.VOB Format : MPEG-PS File size : 7.50 GiB Duration : 2h 35mn Overall bit rate mode : Variable Overall bit rate : 6 891 Kbps Video ID : 224 (0xE0) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP : Yes Format settings, Matrix : Custom Format settings, GOP : M=3, N=15 Duration : 2h 35mn Bit rate mode : Variable Bit rate : 6 306 Kbps Maximum bit rate : 8 000 Kbps Width : 720 pixels Height : 480 pixels Display aspect ratio : 16:9 Frame rate : 29.970 fps Standard : NTSC Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Top Field First Compression mode : Lossy Bits/(Pixel*Frame) : 0.609 Stream size : 6.86 GiB (92%) Audio ID : 189 (0xBD)-128 (0x80) Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Muxing mode : DVD-Video Duration : 11s 40ms Bit rate mode : Constant Bit rate : 448 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 604 KiB (0%)
Code:LoadPlugin("D:\MeGUI_2153_x86\tools\dgindex\DGDecode.dll") DGDecode_mpeg2source("D:\Output\MyTestVideo.d2v", info=3) LoadPlugin("D:\MeGUI_2153_x86\tools\avisynth_plugin\ColorMatrix.dll") ColorMatrix(hints=true, interlaced=true, threads=0) LoadPlugin("D:\MeGUI_2153_x86\tools\avisynth_plugin\TIVTC.dll") tfm(order=-1).tdecimate(hybrid=3) a1=LanczosResize(768,432) # Lanczos (Sharp) a2=ImageReader("D:\Logos\Watermark_80x80.png") a3=ImageReader("D:\Logos\Watermark_80x80.png",pixel_type="RGB32").ShowAlpha(pixel_type="RGB32") Overlay(a1,a2,mask=a3, x=640, y=1)
Once the video & audio tracks are ready, I am muxing them using MP4muxer. But, when I play the MP4 file, av will be in perfectly sync for 1 minute (approx.) and then it will go out of sync for next 3 to 4 minutes. Audio comes 0.5 seconds before the video.
The above cycle repeats through out the movie.
Below is the info of MP4 from MediaInfo:
Code:General Complete name : D:\Output\MyTestVideo_1800k.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom File size : 2.09 GiB Duration : 2h 35mn Overall bit rate : 1 921 Kbps Writing application : Lavf54.33.100 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Main@L3.1 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 2h 35mn Bit rate : 1 800 Kbps Width : 768 pixels Height : 432 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 29.970 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.181 Stream size : 1.95 GiB (93%) Writing library : x264 core 125 r2200 999b753 Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=60 / keyint_min=31 / scenecut=0 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=1800 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=1800 / vbv_bufsize=1800 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00 Tagged date : UTC 2012-10-23 23:40:00 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 35mn Bit rate mode : Constant Bit rate : 128 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Delay relative to video : -2s 2ms Stream size : 143 MiB (7%) Tagged date : UTC 2012-10-23 23:40:00
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