New answers tagged file-formats
summary: yes, depending on content, with a good encoder h.264 can look pretty good at 240kib/s video bitrate, at NTSC 720x480p30. With modern codecs, you don't need to downscale the rez too far. If there isn't a lot of noise in your source, you're just putting the same complexity into fewer pixels. You shouldn't encode 1080p at 270kb/s, though :P. There ...
It takes a lot of bits to accurately, or nearly-accurately reproduce the input pixels, regardless of what they contain. The only exception is low-complexity stuff like a screen capture or animation, where big areas are EXACTLY the same colour, and/or at bit-for-bit identical from frame to frame. The difference between your intuition and real life comes ...
After reviewing the PDF, I can confirm that you are misreading it. They are looking for a flash animation, not a video. You will not be able to use your After Effects assets at all. You need to remake the ad as a flash animation in Adobe Flash using vector graphics in order to fit within their 50KB limitation.
At 200px by 200px, you are looking at extreme levels of limitation. You may want to consider something like a gif at that point unless you also need audio. Just audio alone for 8 seconds completely blows your 50KB bandwidth budget. 50KB is a mind numbingly small amount of data. At 8kbps, no raster video format will be usable, even at 10fps and 200 by ...
i think MPEG Streamclip can do this. It's free on mac and pc.
I was encountering audio sync issues when trying to do this with Avidemux, but I came upon a two-step process that keeps the audio in sync: Concatenate files using MKVToolNix (I used version 7.4.0 for Mac). This results in a Matroska video (.mkv) file. Remux the .mkv file to MP4 format using Avidemux (I used verison 2.6 for Mac). I chose the MP4v2muxer ...
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