tv rip and editing it

[ginny02]

i record a songs from the TV (tv tuner card and have pinnale software) and then use AVS to edit the video and add my logo or name in it and save it as 720 X 576 MPEG4 (xvid/DivX compatible) this makes the file big even if the video bitrate is 1000

my frd suggest me to have an output in MKV or MP4 tht can make ur file smaller

now my que is whts the best way to edit my video and save it as mkv or mp4 output .................

[Baldrick]

Lower the video and audio bitrate to get smaller size.

If it's a avi,mkv or mp4 containers does not matter(well maybe some few bytes/minutes). You could also try use h264/avc as video codec in avs as it might be a bit better for lower bitrates.

[jagabo]

Divx, Xvid: implementations of the MPEG 4 part 2 specification, good compression
h.264, AVC: implementations of the MPEG 4 part 10 specification, better compression

AVI, MKV, MP4, MOV, TS, MPG: containers -- "boxes" that hold compressed (or not) audio and video.

[guns1inger]

It doesn't matter what compression you use, if the bitrate is 1000 then the file sizes will all be the same. Resolution doesn't factor into file size, only quality at a given bitrate. Personally, I would think 1000 kbps at full d1 resolution is a bit low for Divx.

[ginny02]

Lower the video and audio bitrate to get smaller size.

If it's a avi,mkv or mp4 containers does not matter(well maybe some few bytes/minutes). You could also try use h264/avc as video codec in avs as it might be a bit better for lower bitrates.

so is it good to have an output in MPEG (xvid/divX) than mkv or mp4 as size matter only in few bytes

suppose i will save the video in avs at 1000 video bitrate does this matter in clarity ? obv it matters but what percentage of will it matter as compared to default 4500 by default for HD video 720 p..


and ya if i will save the output in h.264 at 1200 bitrate is it good than 1000 bitrate of MPEG 4 (xvid/divx)??


Edit : i have saved the 7 min video in both xvid/dixv compatible video 1000 bitrate and h.264 1200 video bitrate and 192 audio bitrate ........... the file size for h.264 is 70 MB and xvid/divx compatible is 50 MB ...........

one of my told me that nowadays one can even get a full movie around 2 hours in just 400 MB without efecting the clarity ................ for that point of view my saved files of 7 min have larger file size .............. whats the option they used that allow them to have an 2 hour movie in 400 MB

[ginny02]

It doesn't matter what compression you use, if the bitrate is 1000 then the file sizes will all be the same. Resolution doesn't factor into file size, only quality at a given bitrate. Personally, I would think 1000 kbps at full d1 resolution is a bit low for Divx.

i need lees size and 90% clarity same as TV recorded clarity

then whats others options left for me? any other format ?

[jagabo]

When using bitrate based encoding:

file size = bitrate * running time

You can use a bitrate calculator to figure out what bitrate you need for a particular video's running time. That equation is independent of any properties of a particular video, the codec used, and the container it's put in (mostly, there are minor variations in container overhead). The problem is, some videos, and some codecs, may look good at 1000 kbps, others may look terrible, and still others could look good with less bitrate. When you use bitrate based encoding your telling the encoder "I'm primarily interested in file size. Give me whatever quality you can for 'this' file size."

On the other hand you have quality based encoding. You select the quality you want and the encoder delivers that quality at every single frame (more or less). When you use quality based encoding you are telling the encoder "I'm primarily interest in quality. I want 'this' quality, I'll accept whatever bitrate (file size) it takes to achieve that quality."

What effects how much bitrate is needed for any pariticular video? Bigger frames require more bitrate. Higher frame rates require more bitrate. Noisier video requires more bitrate. More action and camera movement requires more bitrate. More detail requires more bitrate. Etc.

As a very general rule: for a particular video, MPEG 2 will require twice as much bitrate as Divx/Xvid to achieve the same quality. Divx/Xvid will require twice as much bitrate as h.264.

[ginny02]

Divx/Xvid will require twice as much bitrate as h.264.

is this mean 1000 video bitrate of divx/xvid will give same output as 500 video bitrate of h.264?

[jagabo]

Divx/Xvid will require twice as much bitrate as h.264.

is this mean 1000 video bitrate of divx/xvid will give same output as 500 video bitrate of h.264?

Yes, roughly.

[natas18]

like one user mentioned the container is not so important for the file size but your choice of codec, bitrate etc ... but your original question was about putting a file inside an mkv or mp4 container, and to answer this :

For mkv container use mkvmerge gui
for mp4 container use yamb

these tools will not do any re-encoding they will simply mux your audio and video streams into an mkv or mp4 container; the process should take less than a minute usually