Converting H.264 to PAL
I have a client at the BBC who wants me to change H.264 QT files to PAL. Never heard of this before, and have checked some conversion charts' don't see it there, either. I always thought H.264 as a file is a file and doesn't have to be converted. And in the past, I have sent H.264 files to my BBC friends which seemed play just fine. I hope this is the right forum...any suggestions?
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h.264 is just a compression codec. It doesn't tell us anything about the video's -
1. Aspect Ratio 2. Bit rate 3. Frame rate 4. Pixel Aspect Ratio 5. Scane - Interlaced or Progressive? 6. Colorspace - Log or Linear - RGB or YUV, etc? It could be 2K, full HD, 720, PAL, NTSC, Youtube...at 24/25/30/50...i or p, Rec.709 or Cineon...you get the drift. However, PAL is a standardized delivery medium: 1. 720x576 2. Can be varied according to the codec and originating format - BBC is very particular about this part. They don't accept DV/HDV or any 'prosumer' source format. 3. 25 4. 1.1 or 1.22 (4:3 or 16:9) 5. Interlaced (progressive only works on HD or a computer, not 'regular' television) 6. PAL color space Hope this helps in some way. |
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