[FFmpeg-user] Good royalty free codec to encode H.264 video with.
krueger at lesspain.de
Thu Dec 19 10:19:45 CET 2013
On Thu, Dec 19, 2013 at 10:18 AM, Robert Krüger <krueger at lesspain.de> wrote:
> On Thu, Dec 19, 2013 at 8:34 AM, Andrei Petru Mura <mapandrei at gmail.com> wrote:
>> *Note:* I'm not experienced in the matter of video programming or
>> processing. If you see some ridiculous mistakes, please be patient and feel
>> free to correct me.
>> I have some videos encoded with a H.264 codec. They are of a very good
>> quality. (A file of 1 hour has 2-3 GB.) I would need to convert those files
>> (about 200) to a format encoded with a royalty free codec. I tried to
>> convert them using MJPEG codec, but when I try to preserve best quality,
>> the resulted files are huge: about 50 GB. I used something like.
>> ffmpeg -c:v h264 -i /path/to/file.avi -map 0:0 -c:v mjpeg -r 30 -qmin 1
>> -qmax 1 -an -vf hfpli /new/path/to/resulted/file.avi
>> *N.B.:* I put the whole command for having a clear idea of what I'm talking
>> Trying to increase the -qmax to 8, I still get a huge file, but more
>> reasonably (~10-15 GB). The problem is that increasing -qmax, some quality
>> issues are visible.
>> I tried to do the same thing, but using a different encoder, namely
>> libvpx-vp9. The resulted file is at a size comparable with H.264, but there
>> are 2 issues: the quality is clearly lower than the original file and the
>> conversion time is effectively enormous. Here is the command that I used:
>> ffmpeg -c:v h264 -i /path/to/file.avi -map 0:0 -c:v libvpx-vp9 -qmin 0
>> -qmax 5 -crf 2 -b:v 1M -an -vf hflip -threads 4 /new/path/to/file.webm
>> Can anybody suggest me a royalty free encoder that I could use for my
>> needs? I would need to be able also to encode with it video files in a
>> relatively good time. Can you give me some hints on this?
>> I'm aware that currently H.264 is the best standard regarding
>> compression-quality in my scenario (I don't want to create a debate right
>> now on that topic). I would need an encoder that would be able to get the
>> same video quality at a reasonable size - let's say what's over 10GB at a
>> file of 1 hour is too much. I also tried to encode with libtheora, but the
>> conversion time is huge (similar to vp9).
> have you tried the good old mpeg4 (-c:v)? I find it is in many cases a
this was meant to read (-c:v mpeg4), of course.
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