China's prevailing technical standards for television is what no frame width is about how many pixels

China's current general PAL analog signal, the resolution of 720 * 576, each frame is equivalent to 420,000 pixels.

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Television standard:

PAL TV standard - 25 frames per second, the TV scan line is 625 lines, odd field in the front, even field in the back, the standard digitalization of the PAL TV standard resolution of 720 * 576, 24-bit color bit depth, the screen The aspect ratio is 4:3, PAL TV standard used in China, Europe and other countries and regions, PAL TV power supply frequency of 50Hz, field frequency of 50 fields per second, the frame rate of 25 frames per second, scanning lines of 625 lines, the image signal bandwidth of 4.2MHz, 5.5MHz, 5.6MHz and so on.

NTSC TV standard - field frequency of 60 fields per second, frame rate of 30 frames per second, scanning line of 525 lines

NTSC TV standard, 29.97 frames per second (simplified to 30 frames), TV scanning line of 525 lines, even field in the front, the odd field at the back of the standard digitizing NTSC TV standard resolution of 720 * 486, 24-bit color bit depth, the picture of the aspect ratio of 4:3. NTSC TV standard used in the United States, Japan and other countries and regions. The field rate is 60 fields per second, the frame rate is 30 frames per second, and the scan line is 525 lines.

The difference between PAL and NTSC is that the color coding and decoding of programs and the field scanning frequency are different. China (excluding Hong Kong), India, Pakistan and other countries use PAL, the United States, Japan, Taiwan, South Korea and other NTSC.

The difference between PAL and NTSC movies are shown at 24 film frames per second. And the video image PAL system is 50 fields per second, NTSC system is 60 fields per second, because nowadays TV are interlaced field, so you can probably think of PAL system 25 complete video frames per second, NSTC system 30 complete video frames.

There's only a 1-frame-per-second difference between movie and PAL, so in the old days it was generally just a straight-up frame-for-frame production, so that PAL would play one more frame per second than movie, which is a 1/24th faster, and the pitch of the sound would be elevated. This is one of the reasons why some DVD enthusiasts don't like PAL DVDs. But it is said that some PAL DVDs are now made with 24+1, which means that one of the 24 frames is repeated once, thus getting the same playback speed as a movie.

NTSC, on the other hand, because of its 30 frames per second, can't be produced directly frame by frame, so it has to convert 24 movie frames into 30 video frames by means of 3-2 PULLDOWN, etc. The content contained in these 30 video frames is equal to that of the 24 movie frames, and so the playback speed of NTSC is the same as that of a movie.

So, for the same movie, a PAL DVD will be 1/24 faster than the same movie in NTSC.To convert the time, NTSC time X 24/25 = PAL time.SECAM Parameters - SECAM has a frame rate of 25 frames per second, scan line 625 lines, interlaced scanning, picture ratio 4:3, resolution 720 x 576, about 400,000 pixels, luminance bandwidth 6.0MHz; color amplitude carrier 4.25MHz; chroma bandwidth 1.0MHz (U), 1.0MHz (V); sound carrier 6.5MHz.