Youtube messed up my video.. (Handbrake encoded .m4v)

[creamsoda]

Today I encoded a FRAPS video to .m4v in Handbrake (720p H264 3Mbps 2-pass AAC audio). The video came out perfectly, no sync issues or choppiness.

HOWEVER, when I uploaded it onto youtube....... youtube stretches the video length from 5mins to 10mins... then destroys it by making it completely out of sync & choppy as hell. (even the audio stutters like crazy)

I know for sure this isn't my internet's fault, because I can view other ppl's HD videos just fine.


Why is it doing this? I still have the original on my computer which runs completely fine.

[aedipuss]

.m4v should be a video only file. if it has video and audio the correct container is .mp4 maybe you messed up the encoding settings. use mediainfo in text mode and copy and paste the output from the source and output files.

[creamsoda]

General
Complete name : C:\Other Videos\Shikigami no Shiro III - Stage 1.m4v
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 122 MiB
Duration : 5mn 23s
Overall bit rate : 3 164 Kbps
Encoded date : UTC 2010-01-04 20:02:21
Tagged date : UTC 2010-01-04 20:08:42
Writing application : HandBrake 0.9.4 2009112300

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 5mn 23s
Bit rate mode : Variable
Bit rate : 3 000 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 30.000 fps
Minimum frame rate : 24.000 fps
Maximum frame rate : 30.000 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.109
Stream size : 116 MiB (95%)
Writing library : x264 core 79
Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=6 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=1 / wpredb=1 / wpredp=2 / keyint=301 / keyint_min=31 / scenecut=40 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=3000 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2010-01-04 20:02:21
Tagged date : UTC 2010-01-04 20:08:42
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Format settings, SBR : No
Codec ID : 40
Duration : 5mn 22s
Bit rate mode : Variable
Bit rate : 160 Kbps
Maximum bit rate : 207 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Resolution : 16 bits
Stream size : 6.14 MiB (5%)
Encoded date : UTC 2010-01-04 20:02:21
Tagged date : UTC 2010-01-04 20:08:42

Text
ID : 3
Format : Apple text
Codec ID : text
Duration : 5mn 23s
Bit rate : 0
Stream size : 14.0 Bytes (0%)
Encoded date : UTC 2010-01-04 20:02:21
Tagged date : UTC 2010-01-04 20:08:42

[poisondeathray]

Your framerate is VFR - variable frame rate. I don't think youtube understands VFR

[MattHurst]

Indeed YouTube has some known issues using VBR, which are covered pretty extensively in their forums http://www.google.com/support/forum/p/youtube/thread?hl=en&tid=2c2b22ee0ffa7463

A subsequent search of "audio sync" revealed a lot of reports about variable bit rate for audio being the usual culprit, ultimately making older uploads to the site lose sync. I'm having a similar problem and am trying to find a solution which makes Hnadbrake covert the video at a Constant bit rate.

[fitch.j]

Frame rate mode : Variable

= Problem