X264 which level

The output will have the correct profile and level set in its metadata. You can check this while encoding, where x says something like:. MediaInfo can also help you analyze container and codec details. Of course, reencoding the video will degrade its quality to some extent, given that you're applying a lossy conversion again.

Try setting the -crf option to influence the constant quality parameter. How much is up for debate though. Only difference between 4. It says setting to Level 4. AFAIK, x sets the level based on refs and resolution.

So if you want to ensure for instance it uses level 4. My main problem was the whole autodetection thing for x to choose L4. Who cares what the level flag is? The actual content and settings used might actually be lower. Some people set it to read L5. I suspected there was a difference in number of reference frames, and probably then number of consecutive b frames too, but couldn't find a definitive-ish reference.

The use of more than 4 reference frames rarely makes much difference though. If you look at the encoding logs you'll see 4 or less used 99 percent of the time.

This is just a label for god sake! It is just a basic information for decoder. To be honest level 4. Some noobs still think that level means automatically better quality 4. Of course, H Level Editor only changes the profile flag in the header. If the video actually has High 5. Replies: 16 Last Post: 11th Oct , Replies: 8 Last Post: 17th Sep , Replies: 12 Last Post: 18th Jul , Replies: 1 Last Post: 4th May , Are my specs high enough for p capture as x?