How do I use QuickTime to encode files for seamless looping?

Last Updated: December 4, 2014

For a video file to loop seamlessly, it must be encoded using specific parameters. You can also use QuickTime Pro 7 to encode a file for seamless looping. To do this, you will need to export a movie using the "Movie to QuickTime Movie" feature.

1. In Quicktime Pro, go to File > Export ... > Export "Movie to QuickTime Movie" > Options

Screenshot_2014-06-20_18.08.42.png

2. Navigate to Movie Settings > Video and click Settings.

Screenshot_2014-06-20_18.21.28.png

3. It is suggested that you set everything as what is shown in the below screenshot and play this back on your player before making any changes.Screenshot_2014-06-20_18.23.53.png

NoteChanging the Encoding from "Faster encode" to "Best Quality" will increase the file's profile and sometimes set it to a 5.0 H.264 profile. If you do decide to change this value, make sure to check that the profile of the encoded file is no higher then 4.2 (if you're using an XD or 4K player).

4. Click OK to return to Movie Settings.
5. Under Sound, click Settings.
6. Ensure that the Audio Format is indeed set to Linear PCM with Little Endian enabled.
7. Click OK.

Screenshot_2014-06-20_18.08.19.png

 The generated file should have (more or less) the below specs:

Complete name                            : F:\SalsaTriimmed15MbpsFasterEncode.mov
Format                                   : MPEG-4
Format profile                           : QuickTime
Codec ID                                 : qt 
File size                                : 17.9 MiB
Duration                                 : 9s 280ms
Overall bit rate                         : 16.1 Mbps
Encoded date                             : UTC 2014-06-20 18:01:27
Tagged date                              : UTC 2014-06-20 18:01:37
Writing library                          : Apple QuickTime

Video
ID                                       : 2
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L3.2
Format settings, CABAC                   : No
Format settings, ReFrames                : 2 frames
Format settings, GOP                     : M=2, N=25
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 9s 280ms
Duration_FirstFrame                      : -28ms
Duration_LastFrame                       : -12ms
Bit rate                                 : 14.5 Mbps
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 25.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.631
Stream size                              : 16.2 MiB (90%)
Language                                 : English
Encoded date                             : UTC 2014-06-20 18:01:28
Tagged date                              : UTC 2014-06-20 18:01:37
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709

Audio
ID                                       : 1
Format                                   : PCM
Format settings, Endianness              : Little
Format settings, Sign                    : Signed
Codec ID                                 : sowt
Duration                                 : 9s 280ms
Bit rate mode                            : Constant
Bit rate                                 : 1 536 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Stream size                              : 1.70 MiB (10%)
Language                                 : English
Encoded date                             : UTC 2014-06-20 18:01:28
Tagged date                              : UTC 2014-06-20 18:01:37

 

We suggest you check that the generated file is still within the required specs using MediaInfo.

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2 Comments

  • 0
    Avatar
    Will Lukas

    I am trying to get audio to play on our TV through our XD230.  I have the exact settings for video and audio as described in this thread, video plays fine, but get zero audio.  XD230 is hooked up via HDMI to TV. 

  • 0
    Avatar
    Romeo

    Hi Will,

    Please provide a link to download this file.

    Regards,

    Romeo

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