A/V synch issues withYouTube

EDogVet wrote on 11/2/2011, 12:21 PM

After uploading video to YouTube it complains there may be A/V Synch issues. The YouTube help pages seemed to verify I had the render settings set correctly. Here they are:
Sony AVC .mp4
Internet Template
Audio: 128 Kbps, 48,000 Hz, 32 Bit, Sterio, AAC
Video: 29.970 fps, 1440x1080 Progressive, YUV, 12 Mbps

Comments

musicvid10 wrote on 11/2/2011, 1:12 PM

Post your complete file properties using MediaInfo (download from Sourceforge).

Youtube can be a bit touchy with its messages because of a number of sync problems with FCS material.

Does your upload actually have bad sync when viewed on Youtube? If not, you can pretty much ignore the message.

rraud wrote on 11/2/2011, 2:36 PM

Yeah, I get the same message when uploading MP4s. I see no sync problems with my uploads and ignore the 'one size fits all' message.

gwailo wrote on 11/5/2011, 1:57 AM

every video i upload to youtube has sync issues, but If I move the audio 2 frames earlier than the video everything works out nicely.

Dr Zen wrote on 11/5/2011, 3:57 AM

There is one setting that you listed that I would never use for YT.
1080p Video Size for YouTube should be 1920x1080 with a Pixel Aspect Ratio of 1.0 Square, not 1440x1080.
This might be what is confusing YouTube.
Are you starting off with the actual Internet Temlpate in Sony AVC/MVC = Internet 1920x1080-30p.
Also, I would increase the bit rate of your Audio to 192kbps or higher.
This is the template I use, and I have never has sync problems of YT.

Liam_Vegas wrote on 11/7/2011, 9:47 PM

I'm seeing the same thing with V11. I've been encoding MP4 videos and uploading to Youtube for a long time with no issues. Now I'm using V11 I get the sync issues on every upload.

I'll re-encode my video to MP4 in V10 and see if it uploads OK. My hunch is that it is v11 specific.