Help please with SVCD

[TOMMO]

Please can you help, I am so close it exasperating (or however it is spelt). I have glitches in Audio playback on SVCD.

I have tried for a long time to make a good SVCD. Never worked properly, poor quality, jagged lines etc.

Two nights ago I gave it another go, just reset up the system, with dual boot 98SE and WIN2K. Thought here goes.
I have a DC30Plus capture card using the latest driver from Pinnacle.

The results were fantastic, the image quality was sso damn good, and it was shots from relatively fast moning camera footage. The audio however is just a bit glitchy in places.

Heres what I did. My camera is a Sanyo 8MM analogue. Captured at 720 x 540 (PAL), data rate 7150kbs. No frame drops, perfect. Put clip into Premiere 5.1C, added CD Quality WAV and exported the movie as AVI compressed to 4000kbs. Encoded the AVI in TEMPEnc 12A using the standard supplied template. Changed the video source setting to Interlace and then set it to DE-INTERLACE. (I forgot the first time and jaggy lines). The motionsearch was set at normal, everything default except for deinterlace. The AVI was 2 minutes long and it took around 20 minutes to encode on my PIII 866 system.

Played the file back on the computer, everything looked and sounded fantastic on the PC.

Downloaded Nero 5.5 (new version) and burnt.

The Image quality on my Philips 711 DVD player was superb, even the wife commented on how good it was. However - at the beginning the audio is glitchy. I will try to explain better. Right at the beginning the audio seems to speed up, then slow down to normal, clicks a few times, then seemed to be normal.

obviously, I understand that something happened during the writing phase to cause this or the Philips has a problem playing the file back.

Can anyone help with this slight audio problem please. I don't know if I can go back to VCD after seeing the quality.

[TOMMO]

Someone respond - 58 have looked at - No answers

Is this because -

1. It has been answered before - and your silence is your way of telling me to do a search.

2. The answer is so obvious it doesn't warrant an answer

3. No one knows the answer.

To these points I respond

1. I have searched.
2. Its not obvious to me
3. Fair enough

Thanks

[disturbed1]

Here's two thoughts.

Is the audio ok before you encode? How about after you encode, is the audio choppy when played on your computer? If those are ok....

Lower the bit rate in TMPGenc, SVCD has a max mux rate of 2600, some stand alone players may not be able to handle the higher bitrate, and as a result they will skip, or cut out the audio during bitrate peaks.

TMPGenc's default video bitrate for SVCD is 2520 add the audio, 224, you'll get 2764, which the maxium data transfer rate of a 2x CD drive. At this rate, there isn't any room for the overhead bytes required in a MPEG2 stream. In short, use 2376 video, and 224 audio, or another combo, to maintain a total mux rate close to 2600.

[Betamax]

Here's another tip :
Take a 'standard' profiles of TMPGenc for SVCD (NOT film!).
Count the length of your movie, use a bitratecalculator to calculate the amount of KBits to use for 1 or 2 or more CD's. With the result in mind, select 2-Pass VBR (which encodes very slow, but you'll get best result). That result you must enter it in it's 'Average Bitrate' (you can find it when you click 'Settings').
For 'Motion Search', best sellect HighQuality or HighestQuality (will slow the encode process a lot more).
Now encode your movie (start it before bedtime, even at my Athlon 1.2Ghz, it can take whole night).

Don't forget to split your movie before encoding if you wanted to write it on more than 1 CD.
If you having troubles with the sound (not synchrone or mutes after a few minutes), then first encode the audio to a MP2 file and enter this one into the Audio field of TMPGenc.

[TOMMO]

Thanks for the answer - What you are saying - both of you - makes perfect sense.

What I have done is increase the Audio to 48000(it has been stated elsewhere that this is a quirky thing with the Philips and SVCD.


I have just done a 2 minute clip with audio and - plays back fine - except I am back to jerky video (in motion scenes) so obviously it has something to do with bitrates.

Yes - the clips plays back fine on the computer as MPEG.

It is probably my fault for picking probably the worst type of video - taken on a recent skiing holiday. But so what - I wasn't moving that fast HAHAHA

[TOMMO]

Thanks betamax and disturbed1.

Tried to do what was suggested - however I could not change the "CQ" bitrate - greyed out noway to do it.

Changed it to CBR and then lowered the quality to the suggested level, deinteralce (Blend), audio at 48000. The result is very good indeed.

I am posting the .mcf only for the purposes of examination and suggestions.

Thank you

object TMPEGConfigFile
MPEG.Text = 'SuperVideoCD PAL'
MPEG.Description = ''
MPEG.OutputStreamType = MPEG_OutputStreamType_System_VideoAudio
MPEG.OutputStreamType_ReadOnly = True
MPEG.Video.StreamType = MPEGVideoEncoder_StreamType_MPEG2
MPEG.Video.StreamType_ReadOnly = True
MPEG.Video.Width = 480
MPEG.Video.Width_ReadOnly = True
MPEG.Video.Height = 576
MPEG.Video.Height_ReadOnly = True
MPEG.Video.YUVFormat = 1
MPEG.Video.YUVFormat_ReadOnly = True
MPEG.Video.DC_prec = 0
MPEG.Video.DC_prec_ReadOnly = True
MPEG.Video.Interlace = False
MPEG.Video.Interlace_ReadOnly = False
MPEG.Video.TopFieldFirst = False
MPEG.Video.PullDown32 = False
MPEG.Video.PullDown32_ReadOnly = True
MPEG.Video.FrameRate = 3
MPEG.Video.FrameRate_ReadOnly = True
MPEG.Video.AspectRatio = 2
MPEG.Video.AspectRatio_ReadOnly = True
MPEG.Video.RateControlMode = MPEGVideoEncoder_RateControlMode_CBR
MPEG.Video.RateControlMode_ReadOnly = False
MPEG.Video.MaxBitRate = 2520000
MPEG.Video.MaxBitRate_ReadOnly = False
MPEG.Video.CBR_BitRate = 2376000
MPEG.Video.MVBR_MaxBitRate = 2520000
MPEG.Video.MVBR_Quality_P = 0
MPEG.Video.MVBR_Quality_B = 20
MPEG.Video.VBR_AvgBitRate = 1150000
MPEG.Video.VBR_MaxBitRate = 2520000
MPEG.Video.VBR_MinBitRate = 0
MPEG.Video.AVBR_Quality = 50
MPEG.Video.AVBR_MaxBitRate = 2520000
MPEG.Video.AVBR_MinBitRate = 0
MPEG.Video.AVBR_EnablePadding = False
MPEG.Video.CQ_Quality = 65
MPEG.Video.CQ_Quality_P = 0
MPEG.Video.CQ_Quality_B = 20
MPEG.Video.CQ_MaxBitRate = 2376000
MPEG.Video.VBVBufferSize = 114688
MPEG.Video.VBVBufferSize_ReadOnly = True
MPEG.Video.GOP_SeqHeaderInterval = 1
MPEG.Video.GOP_SeqHeaderInterval_ReadOnly = True
MPEG.Video.GOP_I_FrameCount = 1
MPEG.Video.GOP_I_FrameCount_ReadOnly = False
MPEG.Video.GOP_P_FrameCount = 5
MPEG.Video.GOP_P_FrameCount_ReadOnly = False
MPEG.Video.GOP_B_FrameCount = 2
MPEG.Video.GOP_B_FrameCount_ReadOnly = False
MPEG.Video.GOP_BitStreamForEdit = False
MPEG.Video.GOP_BitStreamForEdit_ReadOnly = False
MPEG.Video.QuantizeMatrix_Intra_ReadOnly = False
MPEG.Video.QuantizeMatrix_NonIntra_ReadOnly = False
MPEG.Video.CheckProfile_and_Level = True
MPEG.Video.CheckProfile_and_Level_ReadOnly = True
MPEG.Video.Profile = 4
MPEG.Video.Profile_ReadOnly = True
MPEG.Video.Level = 8
MPEG.Video.Level_ReadOnly = True
MPEG.Video.VideoFormat = 1
MPEG.Video.VideoFormat_ReadOnly = True
MPEG.Video.MotionSearchSpeed = MPEGVideoEncoder_MotionSearchSpeed_Normal
MPEG.Video.MotionSearch_AlwaysHalfPel = False
MPEG.Video.UseFloatDCT = False
MPEG.Video.QuantizeMode = False
MPEG.Video.QuantizeModeVal_Intra = 35
MPEG.Video.QuantizeModeVal_NonIntra = 35
MPEG.Video.YUVBasicYCbCr = False
MPEG.Video.QuantizeMatrix_Intra = {
081013161A1B1D22101016181B1D222513161A1B1D22222616 161A1B1D222528
161A1B1D202328301A1B1D202328303A1A1B1D22262E38451B 1D23262E384553}
MPEG.Video.QuantizeMatrix_NonIntra = {
10111213141516171112131415161718121314151617181913 14151617181A1B
14151617191A1B1C151617181A1B1C1E1617181A1B1C1E1F17 18191B1C1E1F21}
MPEG.Audio.StreamType = MPEGAudioEncoder_StreamType_MPEG1_Layer2
MPEG.Audio.StreamType_ReadOnly = True
MPEG.Audio.SamplingFrequency = 48000
MPEG.Audio.SamplingFrequency_ReadOnly = False
MPEG.Audio.ChannelMode = 0
MPEG.Audio.ChannelMode_ReadOnly = False
MPEG.Audio.CantUseMono = True
MPEG.Audio.BitRate = 224000
MPEG.Audio.BitRate_ReadOnly = True
MPEG.Audio.CalcCRC = True
MPEG.Audio.CalcCRC_ReadOnly = False
MPEG.Audio.OriginalFlag = False
MPEG.Audio.OriginalFlag_ReadOnly = False
MPEG.Audio.CopyrightFlag = False
MPEG.Audio.CopyrightFlag_ReadOnly = False
MPEG.Audio.PrivateFlag = False
MPEG.Audio.PrivateFlag_ReadOnly = False
MPEG.Audio.EmphasisType = 0
MPEG.Audio.EmphasisType_ReadOnly = False
MPEG.System.StreamType = MPEGSystemEncoder_StreamType_MPEG2_SuperVideoCD_VB R
MPEG.System.StreamType_ReadOnly = True
MPEG.System.CommentText = ''
MPEG.System.EnableCommentText = False
end