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Both MKV and MP4 are container file formats. Container formats define how actual audio, video, subtitle and other data are structured. MKV is an open standard format, while MP4 comes from the ISO and is based on the QuickTime file format.

Banding isn't uncommon in compressed video files, and can is exacerbated by the type and level of compression...there's also the bitrate of the original file and the final output. Lot's of points along the chain can cause banding. But I'd guess it's in your final output. What software are you using for rendering/conversion, and what are the render settings ...

The .mpg and .mpeg extensions are typically associated with MPEG-1 and MPEG-2 files. The structure of these files is different than the .mp4 format used for H.264 video, part of the MPEG-4 family of formats. I suspect VLC and WMP can play the file because they must not be using the file extension to determine file type, they probably parse the file with all ...

The key is to dial in the bitrate - you'll need about 800kbps video with 100kbps audio to hit 200MB. That's low for for SD resolution, but it might be good enough for you. Also look for software that has an option for 2-pass encoding. Try Expression Encoder, Adobe Media Encoder, or Sorenson Squeeze.

A really good program you can use is Handbrake. It's a very popular program among so called "pirates" because it's really good at getting a high quality even at tiny file sizes. And this is with good reason, because the main purpose of Handbrake is, indeed, to make the movies small with high quality. Personally I use it when I distribute my short movies on ...

As it was shot by its creators is kind of a nebulous concept, particularly when compression is involved. Color reproduction varies greatly from one device to another and without a calibrated display and a complete chain of color control going back to the source, you aren't going to get exact. Even then, chances are good that somewhere along the line the ...

ffmpeg will do it for you - http://stackoverflow.com/questions/5887311/ffmpeg-1-image-1-audio-file-1-video If you want to provide good seeking ability, you will need to provide key frames at certain intervals in the encoding, which will increase the size of the video. The codec will encode the whole frame at each of the keyframes but greatly compress the ...

Be aware that you are not changing anything. If I call you Bob, you are still Jac and even then you are probably posting under a different name. If you have software that naively trusts the filename instead of examining the actual binary headers of the file, this can work for you. If the actual format or encoding is wrong then no name change will fix that. ...

Yes, this simple conversion should work fine. Both files are technically mp4 files anyways. Only notable thing is that certain older Apple products, like older versions of appleTV for example, require it to be in m4v format so don't forget to switch it back if your switching between a Mac and a PC if you are using older mac products. By default, m4v files ...

I believe this statement: I've a problem while merging 2 h264/mp4 files width the same parameters except length is incorrect. In addition to length your video files have different picture dimensions, and that prevents the merge. Your "input sample" shows a track size of 853x480. The output, however, shows that track #1 is 1024x576 and track #3 if ...

Avidemux should do the work. Load File Go to File -> Append and select File To the left of the video window, set video mode to Copy; same for audio mode; set format to MP4. Go to File -> Save -> Video.

You can use Avidemux or Yamb to separate audio and video tracks, then convert the CBR to VBR audio and use avidemux to join them together. I had a slightly different issue (see my question here) but in playing around with the tools recommended, I found this functionality.

I found that you get better results from gradients in AE when you run in floating point, i.e. 16 or 32bit and output those very bits to the encoder. This means not introducing banding by downsampling it to 8 bit before sending it to the encoder, or even the internal Adobe encoder in AE (which is crap for low bitrates). On the Mac, you might want to export ...

If you are using the Ramp effect then you can increase the Ramp Scatter value which helps decrease banding. Also working in 16 bit or 32 bit rather than 8bit can also help!