MP4 is not a codec but a container. You should have named VP8 (and Vorbis) as a good alternative. It is used together with the WebM container and is supported by Google/Youtube.
Technically H.264 isn't a codec; it's a video compression standard defined in MPEG4 part 10, but it's also known as H.264 or AVC. A universal decoder was developed that is able to decode a bitstream that is compliant with the AVC specification; it's why when new versions of H.264 encoders are released, the decoder doesn't have to be re-compiled since it already supports basically everything the H.264 specification offers.
x264 is not only a free H.264 encoder, but it supports the most features of the standard. ffmpeg, free as well, is also useful for other tasks, such as multiplexing streams (such as a video and audio track) together into, for example, the MP4 container file. These tools are command-line interfaces easiest to use by creating batch script templates, but if you prefer a GUI, there's a lot of them out there.
If you don't set your audio to AAC or MP3, sometimes your video's audio gets out of sync. (trust me I know). see here: http://www.youtube.com/watch?v=iFd987nrFKY this isn't as bad if you aren't showing a talking head. But it still presents undesired results
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MP4 is not a codec but a container. You should have named VP8 (and Vorbis) as a good alternative. It is used together with the WebM container and is supported by Google/Youtube.
ReplyDeleteCheers!
Technically H.264 isn't a codec; it's a video compression standard defined in MPEG4 part 10, but it's also known as H.264 or AVC. A universal decoder was developed that is able to decode a bitstream that is compliant with the AVC specification; it's why when new versions of H.264 encoders are released, the decoder doesn't have to be re-compiled since it already supports basically everything the H.264 specification offers.
ReplyDeletex264 is not only a free H.264 encoder, but it supports the most features of the standard. ffmpeg, free as well, is also useful for other tasks, such as multiplexing streams (such as a video and audio track) together into, for example, the MP4 container file. These tools are command-line interfaces easiest to use by creating batch script templates, but if you prefer a GUI, there's a lot of them out there.
I thought it was Professor Compression and not Professor Compressor.
ReplyDeleteIf you don't set your audio to AAC or MP3, sometimes your video's audio gets out of sync. (trust me I know). see here:
ReplyDeletehttp://www.youtube.com/watch?v=iFd987nrFKY
this isn't as bad if you aren't showing a talking head. But it still presents undesired results