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H.264 Audio/Video out of sync - VideoHelp Forum

    https://forum.videohelp.com/threads/220088-H-264-Audio-Video-out-of-sync
    2. Xvid @ 30fps: plays in sync but video a bit choppy is certain sequences (as expected because encode is at 30fps and source is 24fps). Nevertheless, video and audio are perfectly in sync. 3. x264 @ 24fps: plays about about 0.5 seconds out of sync. 4. **x264 @ 30fps: Here's the key test.

Solved: Audio out of sync when exporting H.264 - Adobe ...

    https://community.adobe.com/t5/premiere-pro-discussions/audio-out-of-sync-when-exporting-h-264/m-p/8909442
    Audio out of sync when exporting H.264. I just discovered the following: Whenever I export a H.264 in MP4 container, the audio in the resulting file goes about 10 ms out of sync. (575 audio samples to be exact.) Green is the original clip, red is the resulting file from export. I used 25fps in export settings.

video - h.264 Audio Out of Sync in Premiere - Video ...

    https://video.stackexchange.com/questions/15371/h-264-audio-out-of-sync-in-premiere
    I shot some video at an event last night with an ATEM TV Studio and recorded it via USB to my computer. The files themselves play fine with VLC or Windows Media, but when I import them into Premiere the audio is out of sync with the video. These files were captured with Media Express on 1080i5994. Capture format says AVI 8bitYUV.

Audio/video synchronization, TS MPEG2;H264/AVC ...

    https://stackoverflow.com/questions/4728533/audio-video-synchronization-ts-mpeg2h264-avc-understanding-pts-in-handbrake
    Appendix: My take on the handbrake A/V paper is this: At "expected" 100, the offset is calculated as video pts (100) - audio pts (0) - the internal PTS, to bring the audio up to the same presentation time, thus giving a pts offset of 99. at 105 the offset would be 105-5 = 100, not 99, but we proceed to use 99 as offset since there's no need to ...

Blackmagic Forum • View topic - H.264 Pro Recorder audio ...

    https://forum.blackmagicdesign.com/viewtopic.php?f=3&t=42744
    Re: H.264 Pro Recorder audio out of sync. I've learned the hard way that the H.264 Pro Recorder (like most Blackmagic video capture hardware) requires a rock-solid video sync in order to capture and convert an incoming signal reliably. I had bad experiences with this device until I routed all off-tape outputs through a broadcast grade TBC (Time ...

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