2. Click to enter VideoCompressor, and the application will directly scan and read the video content on the mobile phone.

3. Click on the video you want to compress, and the video will start playing automatically.

4. Click Select to enlarge the video in the upper right corner, click TargetSize in the lower left corner, and slide left and right to adjust the video memory size.

5. After determining the video size, click Save at the top right, and it will be automatically displayed in the photo album after the compression is completed.

Extended data:

Video compression standard:

1、H.26 1

H.26 1 standard is designed for ISDN, which is mainly used for real-time coding and decoding. The time delay of signal compression and decompression shall not exceed 150ms, and the code rate shall be px64kbps(p= 1~30).

H.26 1 standard mainly adopts motion compensated inter-frame prediction, DCT transform, adaptive quantization, entropy coding and other compression technologies. There are only I frames and P frames, but there is no B frame, and the accuracy of motion estimation is only at the pixel level. Supports two image scanning formats: QCIF and CIF.

2、H.263

H.263 standard is a very low bit rate international standard for image coding. On the one hand, it is based on H.26 1, with mixed coding as the core. Its basic principle block diagram is very similar to H.26 1, and the original data and code stream organization are also very similar. On the other hand, H.263 also absorbs some effective and reasonable parts of other international standards such as MPEG, such as half-pixel precision motion estimation and PB frame prediction, which makes its performance better than H.26 1.

Baidu Encyclopedia-Video Coding