If your footage exceeds 60 FPS, we will automatically reduce the frame rate. When preparing your video for upload, it’s best to maintain the video’s native frame rate when compressing your video. Audio Codec : AAC-LC (Low Complexity AAC)įrame rate is the measurement of how quickly a number of images (or frames) appear within a second, commonly referred to as FPS (frames per second).Scan type : Progressive, and recommend deinterlacing videos.Color Transfer Characteristics : F or HDR videos we only support the PQ (SMPTE 2084) or HLG transfer function.Color Primaries and Matrix Coefficients : All accepted but we recommend BT.2020 (Rec. Bit rate : Choose variable if possible and follow ranges based on your video’s definition.Frame rate: Keep native frame rate and choose constant frame rate.Video Codecs: H.264, Apple ProRes 422 (HQ), or H.265 (HEVC).The maximum video duration allowed is 24 hours.The maximum file size allowed is 250 GB.See Video, Color, and Audio guidelines after this list for more exhaustive information. This section provides a brief breakdown of recommended settings but may not cover all use cases. Color primaries and matrix coefficients.Read about How to use HandBrake to help avoid variation in upload quality. If your editing or encoding software does not offer export customizations (or you don’t have access to the software), you can use a free program like Handbrake ( ) to re-encode your file. ⚠️Note: The best way to re-encode your file is to re-export it from the program you used to create it. See the compression quickstart guide below for the most common settings. However, it is worth noting that 3GP nowadays is not so widely spread, and newer formats take their leading positions.This article provides best practices for video, color, and audio settings to use when compressing videos before uploading them to Vimeo. In audio, 3GP usually contains various AMR, AAC, and AAC+ coding formats. Generally, the 3GP container supports H.263, MPEG-4 Part 2 encoded video, besides that, H.264 (MPEG-4 Part 10/ AVC) encoded video can be inside as well. We’ll take a separate look at the ways to fix TV sound desync. But if you only need to sync up video files, then that can be done in a media player.įinally, audio (or video) delay can appear in an HD-home-cinema kind of setup, due to the sheer volume of data that UHD and lossless sound require. If you need to eliminate sound delay in games or streamed media, wired headphones or speakers are the only way. It’s getting smaller on newer devices, but it’s not perfect yet. Compression and decompression create a noticeable delay. But its bandwidth is narrow, less than a cable, so it requires audio to be compressed. Bluetooth is about as fast as cables, which is why it works without delay for keyboards, mice, and gamepads. Also, sometimes video and audio tracks have different durations and play at different speeds, which makes perfect sync impossible, especially when the media is one or more hours long.īluetooth audio hardware is another possible desync source. Obviously, it’s not as easy when you’re viewing a desynchronized stream on the internet. This can be fixed in most modern media players by adjusting the audio delay. In this case, the creator of the video didn’t bother to synchronize the tracks. Generally, ways to synchronize audio and video are the same for all for them, but it’s useful knowledge either way.įirst of all, it could be a problem with the video you’re watching. There are three common causes for audio sync problems.
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