# Video transcoding rules

<div data-elink-language-switch="1" id="bkmrk-%E4%B8%AD%E6%96%87" style="border:1px solid #d6d9de;border-radius:6px;padding:10px 12px;margin:0 0 18px 0;background:#f8fafc;font-size:14px;">[中文](/books/250cf/page/a97da)</div><span style="font-size:17px;">**I. Purpose of Transcoding**</span>

<span style="font-size:15px;">1. The purpose of uploading and transcoding is to uniformly adapt videos to the mainstream video sizes and formats compatible with online playback on most mobile devices.</span>

<span style="font-size:15px;">2. Transcoded videos can be opened and played faster and more smoothly on the user - end.</span>

<span style="font-size:15px;">3. It also saves network bandwidth costs and user data costs.</span>

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<span style="font-size:17px;">**II. Transcoding Rules**</span>

<span style="font-size:15px;">All uploaded videos will be transcoded by Tencent Cloud. The transcoding rule is to transcode downwards in stages:</span>

<span style="font-size:15px;"><span style="font-size:14px;">Greater than 1080P</span><span style="font-size:14px;text-decoration:underline;">(Resolution reaches 1920\*1080)</span><span style="font-size:14px;">: Transcode to 1080p;</span></span>

<span style="font-size:15px;">Less than 1080p but greater than 720P: Transcode to 720p;</span>

<span style="font-size:15px;">Less than 720P but greater than 480P: Transcode to 480p;</span>

<span style="font-size:15px;">Less than 480P but greater than 360P: Transcode to 360p;</span>

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<span style="font-size:15px;">Considering the domestic network bandwidth, reduce the bit - rate while maintaining the clarity as much as possible to minimize the bandwidth requirements. For videos with fast - changing frames and rich colors, reducing the bit - rate will significantly affect the clarity.</span>

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<span style="font-size:17px;">**III. Transcoding Instructions**</span>

<span style="font-size:15px;">1080p ultra - high - definition transcoding is currently only supported for flagship - edition online stores. Basic - edition and professional - edition online stores can support up to 720p high - definition transcoding;</span>

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[What should I do if the video cannot be played or the transcoding takes too long to complete?](https://helpcenter.xiaoe-tech.com/#/problem/detail?document_id=doc_5f294be6513cd_BP4YD)