Skip to main content

Thread: Video codec advantages vs disadvantages

-

what favorite video codec (avi, divix, mpeg, etc), , how make them?

have bunch of vob. files windows dvd rips , make single compressed files pc playback only.
codec should use? can adjust bit rate or resolution preferences? program should use?

thanks.

avi not codec, container format. divx codec, brand of series of products, including divx codec, divx player , divx container. proprietary , run on windows , mac. open source equivalent codec, available linux xvid. mpeg standard audio/video compression, includes container , specifications used several codecs.

examples of video containers: avi, mp4, mkv, mov, mpeg, ogg.

use mkv, avi , mp4. mkv best in opinion, because supports multiple streams , features, including subtitles. formats better others, depending on how going watch. instant, hardware xbox, ps3 , standalone dvd players have limitations on formats , codecs can play.

codecs, use ffmpeg's libavcodec codec family, more mpeg4 (mpeg-4 asp), mjpeg (motion jpeg) , libx264 (mpeg-4 avc/h.264) video , libfaac (aac) , mp3lame (mp3) audio stream.

convert vobs can use mencoder.

examples of mencoder commands using codecs/formats:

code:
mencoder source.vob -o output.avi -oac lavc -lavcopts acodec=libfaac:abitrate=128 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1200
code:
mencoder source.vob -o output.avi -oac lavc -lavcopts acodec=libfaac:abitrate=128 -ovc lavc -lavcopts vcodec=mjpeg:vbitrate=1200
code:
mencoder source.vob -o output.mp4 -oac lavc -lavcopts acodec=libfaac:abitrate=128 -ovc lavc -lavcopts vcodec=libx264:vbitrate=1200
the x264 extremely slow, renders best quality results. don't use it. best speed/quality ratio find mpeg4. mjpeg codec renders better results mpeg4 decent encoding speed, although bigger file sizes.

fore more info mencoder options see this

can transcode/edit/merge several formats mkv files mkvtoolnix-gui.

see these:

http://en.wikipedia.org/wiki/video_c...d_video_codecs
http://en.wikipedia.org/wiki/comparison_of_video_codecs
http://en.wikipedia.org/wiki/comparison_of_audio_codecs


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Multimedia Software [all variants] Video codec advantages vs disadvantages


Ubuntu

Comments

Post a Comment

Popular posts from this blog

Error: ‘for’ loop initial declarations are only allowed in C99 or C11 mode - Raspberry Pi Forums

-
hey everyone, i'm trying compile simple code on rpi3 using geany. code written using code::blocks on windows , working without problem. errors i'm getting are: untitled.c:33:5: error: ‘for’ loop initial declarations allowed in c99 or c11 mode , untitled.c:33:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 compile code understand code not problem way i'm compiling it. can give me advice? you need add 1 of suggested options compile command configured in geany, in menu.. build -> set build commands add "-std=c99" after "gcc" in compile , build boxes. (i'm looking on mint pc expect version on pi same). petero raspberrypi
Read more

class MPU6050 has no member named begin

-
hi all, as working out scripts wich me make winddirection meter gy-87 calibrate compass sensor on board. i using script "hmc5883l_calibrate_mpu6050" korneliusz jarzebski. i fault "class mpu6050 has no member named begin" /*   calibrate hmc5883l + mpu6050 (gy-86 / gy-87). output hmc5883l_calibrate_processing.pde   read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/3-osiowy-magnetometr-hmc5883l.html   git: https://github.com/jarzebski/arduino-hmc5883l   web: http://www.jarzebski.pl   (c) 2014 korneliusz jarzebski */ #include <wire.h> #include <hmc5883l.h> #include <mpu6050.h> hmc5883l compass; mpu6050 mpu; int minx = 0; int maxx = 0; int miny = 0; int maxy = 0; int offx = 0; int offy = 0; void setup() {   serial.begin(9600);   // initialize mpu6050   while(!mpu.begin(mpu6050_scale_2000dps, mpu6050_range_2g))   {     delay(500);   } how slove error? any apreciated. kind regards, ilioss what compiler complainin
Read more

missing filename after '-o'

-
i'm new writing in arduino , trying program "ultimate robot kit blue". in uploading first motor test, error message keeps coming says: avr-g++: error: missing filename after '-o' exit status 1 error compiling. invalid library found in /users/dennisleary/documents/arduino/libraries/makeblock-libraries-master: /users/dennisleary/documents/arduino/libraries/makeblock-libraries-master invalid library found in /users/dennisleary/documents/arduino/libraries/makeblock-libraries-master: /users/dennisleary/documents/arduino/libraries/makeblock-libraries-master i've been trying robot , running quite time , appreciated! you have not installed library correctly or correct name.  however, did not post code , did not post complete message guessing.  not @ guessing.  please try again, following instructions follow. to post code and/or error messages: 1) use ctrl-t in arduino ide autoformat code. 2) paste autoformatted code between code tags (th
Read more