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  1. Member brassplyer's Avatar
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    Every video I upload shows this "The video you uploaded may have audio/video sync issues" etc. during upload. They never have a problem. Anyone know what triggers this?
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    Are you uploading H.264?
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  3. Member brassplyer's Avatar
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    Originally Posted by newpball View Post
    Are you uploading H.264?
    Yes, created with Handbrake.
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  4. I'm a MEGA Super Moderator Baldrick's Avatar
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    Variable framerate? Set it to constant framerate/fps in handbrake.
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  5. Member brassplyer's Avatar
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    Originally Posted by Baldrick View Post
    Variable framerate? Set it to constant framerate/fps in handbrake.
    No, constant.
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  6. I'm a MEGA Super Moderator Baldrick's Avatar
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    Post the full details from MediaInfo.
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  7. Member brassplyer's Avatar
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    Originally Posted by Baldrick View Post
    Post the full details from MediaInfo.
    General
    Complete name : E:\Concerto 720p.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 89.4 MiB
    Duration : 2mn 21s
    Overall bit rate mode : Variable
    Overall bit rate : 5 304 Kbps
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:27
    Writing application : HandBrake 0.9.9 2013052900

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.0
    Format settings, CABAC : Yes
    Format settings, ReFrames : 8 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 2mn 21s
    Bit rate mode : Variable
    Bit rate : 5 000 Kbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Variable
    Frame rate : 59.940 fps
    Minimum frame rate : 59.920 fps
    Maximum frame rate : 59.960 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.091
    Stream size : 84.3 MiB (94%)
    Writing library : x264 core 130 r2273 b3065e6
    Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / 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=600 / keyint_min=60 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=5000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:26
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 2mn 21s
    Bit rate mode : Variable
    Bit rate : 288 Kbps
    Maximum bit rate : 318 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Delay relative to video : 33ms
    Stream size : 4.94 MiB (6%)
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:26
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  8. Originally Posted by brassplyer View Post
    Originally Posted by Baldrick View Post
    Variable framerate? Set it to constant framerate/fps in handbrake.
    No, constant.
    You sure about that?

    Originally Posted by brassplyer View Post
    General
    Complete name : E:\Concerto 720p.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 89.4 MiB
    Duration : 2mn 21s
    Overall bit rate mode : Variable
    Overall bit rate : 5 304 Kbps
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:27
    Writing application : HandBrake 0.9.9 2013052900

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.0
    Format settings, CABAC : Yes
    Format settings, ReFrames : 8 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 2mn 21s
    Bit rate mode : Variable
    Bit rate : 5 000 Kbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Variable
    Frame rate : 59.940 fps
    Minimum frame rate : 59.920 fps
    Maximum frame rate : 59.960 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.091
    Stream size : 84.3 MiB (94%)
    Writing library : x264 core 130 r2273 b3065e6
    Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / 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=600 / keyint_min=60 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=5000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:26
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 2mn 21s
    Bit rate mode : Variable
    Bit rate : 288 Kbps
    Maximum bit rate : 318 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Delay relative to video : 33ms
    Stream size : 4.94 MiB (6%)
    Encoded date : UTC 2015-04-24 01:49:17
    Tagged date : UTC 2015-04-24 02:00:26
    They like CBR audio, too. I used to get that message also, although there were never any problems with the audio.
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  9. Member brassplyer's Avatar
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    Originally Posted by manono View Post
    Originally Posted by brassplyer View Post
    Originally Posted by Baldrick View Post
    Variable framerate? Set it to constant framerate/fps in handbrake.
    No, constant.
    You sure about that?
    I'll have to look again, my default is to always choose constant framerate.
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  10. Even if you select constant frame rate when creating MP4 files in Handbrake you will get a variable frame rate file when encoding 23.976, 29.97 or 59.94 fps video. That's because MP4 uses time codes of 1/90000 second duration and those frame rates can't be perfectly represented with that with integers. For example, a 60000/1001 (59.94) fps video should have each frame displalyed for 1501.5/90000 seconds. Handbrake will encode that as VFR alternating between 1501/90000 and 1502/90000 -- averaging to 1501.5/90000 or 1001/60000 seconds per frame.

    If you want constant frame rate encode as MKV. Then, if you must have MP4, remux to MP4.
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    Originally Posted by jagabo View Post
    Even if you select constant frame rate when creating MP4 files in Handbrake you will get a variable frame rate file when encoding 23.976, 29.97 or 59.94 fps video. That's because MP4 uses time codes of 1/90000 second duration and those frame rates can't be perfectly represented with that with integers. For example, a 60000/1001 (59.94) fps video should have each frame displalyed for 1501.5/90000 seconds. Handbrake will encode that as VFR alternating between 1501/90000 and 1502/90000 -- averaging to 1501.5/90000 or 1001/60000 seconds per frame.
    All this fractional framerate zoo is resolved by playing these videos at integer framerates 24, 30, 60 etc and audio time stretching at encoding (or even real) time.

    Perhaps in another decade....

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  12. Originally Posted by jagabo View Post
    If you want constant frame rate encode as MKV. Then, if you must have MP4, remux to MP4.
    Is this a Handbrake peculiarity because after using RipBot264 to make MP4s I get:

    General
    Complete name : H:\Songs\Nau Bahar\1. Nau Bahar - Aeri Main To Prem Diwan.mp4
    Format : MPEG-4
    Format profile : Base Media
    Codec ID : isom
    File size : 83.0 MiB
    Duration : 8mn 15s
    Overall bit rate mode : Variable
    Overall bit rate : 1 406 Kbps
    Encoded date : UTC 2015-04-07 01:03:30
    Tagged date : UTC 2015-04-07 01:03:30

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.0
    Format settings, CABAC : Yes
    Format settings, ReFrames : 3 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 8mn 15s
    Bit rate mode : Variable
    Bit rate : 1 275 Kbps
    Maximum bit rate : 25.0 Mbps
    Width : 640 pixels
    Height : 480 pixels
    Display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.173
    Stream size : 75.2 MiB (91%)
    Title : 1
    Writing library : x264 core 142 r2479 dd79a61
    Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=18.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=25000 / vbv_bufsize=25000 / crf_max=0.0 / nal_hrd=vbr / filler=0 / ip_ratio=1.40 / aq=1:1.00
    Encoded date : UTC 2015-04-07 01:03:30
    Tagged date : UTC 2015-04-07 01:03:32

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 8mn 15s
    Bit rate mode : Variable
    Bit rate : 128 Kbps
    Maximum bit rate : 132 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Stream size : 7.55 MiB (9%)
    Encoded date : UTC 2015-04-07 01:03:31
    Tagged date : UTC 2015-04-07 01:03:32


    I did notice it's saying the audio is VBR also although, as far as I know, it's not.
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  13. Originally Posted by manono View Post
    Is this a Handbrake peculiarity?
    Yes.
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