Codec is shorthand for "Encoder/Decoder". A codec allows to convert data into a different representation and decode it again. Codecs are mostly used in signal transmission, e.g. for audio/video playback or streaming. Note that "codec" is typically just the name for a standard that describes how to ...
1
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2answers
47 views
Why G.722 has 64 kbps bit rate?
I'm learning a few things about codec, and now I'm confused by G.722. There's a way to calculate codec bit rate that I read here on wikipedia.
It said:
bit rate = sampling rate x bit depth
G.722 has ...
1
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0answers
163 views
Lossless video codec for recording gameplay
I'm an avid gamer and I like to record my gameplay. Usually I've been using Fraps to do it, however I'm thinking of switching to Dxtory as it allows to write on multiple HDDs at once.
Say I have 3 ...
0
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0answers
17 views
Conditional conversion of media
I have a collection of videos in various formats. While all of them play perfectly on my computer, it's a different matter when I put them on a stick to watch on my TV. I would like to convert them ...
4
votes
2answers
289 views
What's the best audio format available when I want to convert my files?
I'm a music lover. I have lot of songs stored on my laptop, but the problem is I'm running out of space on my hard disk, because of the different audio formats which occupy lots of space.
Now I want ...
1
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2answers
89 views
How does bitrate differ for the same resolution and framerate?
Reading about video quality I found that it depends of resolution, frames per second and bitrate, which decides the size of the video.
My question is how the bitrate is calculated and how it can ...
2
votes
2answers
56 views
Unable to watch some videos on YouTube
When I try to watch some videos on YouTube, I get the output of the following type:
The behavior persists regardless of the web browser. Is there a solution for this problem?
1
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0answers
67 views
Pinnacle Studio Codecs
I'm having problems importing TV recordings into Pinnacle Studio 12 on Windows Vista. My STB records TS files. I believe the Australian digital standard is to use MP4 but I'm not certain. I have tried ...
0
votes
2answers
171 views
How do I compress my video without compromising it too much
Alright, i'm down to crunch time. I have a video that I have rendered out for something I have to turn in. The submission requires that it be At Most: 200 MB and be one of the following formats:
...
0
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0answers
122 views
Decrypt sysprep unattend.xml user password
How do I decrypt user passwords that are encrypted and used in Windows 7 Sysprep unattend.xml file?
What Encryption method is used in this file?
0
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0answers
80 views
Video format/codec for PowerPoint 2007?
I would like to add video files to PowerPoint 2007 slides (on PC).
1) Which codec should I use for maximum quality?
1b) Does this depend on computer-specific installed plugins/codecs?
2) Is there ...
0
votes
2answers
249 views
what's the best rendering filter to play videos on THE KMPLAYER? [closed]
I'm using THE KMPLAYER to watch my videos. I'm not familar with codecs or rendering filters .
I choosed VMR9 Renderless (HQ subtitle ) by testing once after once. it seems good !
which one is the ...
2
votes
0answers
591 views
Codecs, Premiere Pro & Quicktime: Import or Play Error
Original Question
I've been using a FS-H200 (not the Pro variant) recorder with a JVC ProHD camera. I have been shooting with the DTE FORMAT to Quicktime (.mov). I copied the files to an external ...
-2
votes
1answer
79 views
What is the audio encoding codec that has the less latency?
There is a lot of audio codecs :
MP3
AAC
FLAC
OGG
SPEEX
etc
Some compress a lot and other less .... however it does not mean that one codec is having less less latency than another.
For a general ...
0
votes
1answer
108 views
WebM Conversion
I have some OGG and MP4 files and I am converting them WebM for use on my website. I have used VLC to convert to WebM. What I have noticed is the WebM file is 8MB while the MP4 and OGG are around ...
6
votes
3answers
146 views
Why would my PC no longer be able to play audio files that it was able to play yesterday?
I'm having a very specific problem, with no idea as to what may be causing the issue. Here is a description of what I'm seeing:
I have a CD of PDF/Audio files that are generated by a third party.
Up ...
2
votes
1answer
131 views
Is there a free codec for Windows XP to allow display of RW2 files
Does anyone know of a codec for Windows XP which allows the display of Panasonic RW2 files?
I've seen this link for the Microsoft Camera Codec Pack but it only applies to Windows Vista and later. Also ...
0
votes
2answers
249 views
Windows Media Player 11 Codec Installation
Scenario: Some of our users are trying to play DVD's or other media files and are getting a message telling them that they are missing a codec. Since there are not admins they cannot install the ...
0
votes
1answer
333 views
FLV codec for Windows Media Player? [closed]
Possible Duplicate:
How can I play a FLV file in Windows Media Player?
What I want is a FLV codec for WMP 12, on Windows 7 Professional x64, that's it.
I'm really happy how it plays mp4s ...
2
votes
1answer
83 views
Can I transcode a video if I have an application that can play it?
My condo complex was burglarized last week and I've been tasked with retrieving the video from our security system to provide to law enforcement. The system is an older DVR (DiViS DVR - warning: PDF ...
0
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0answers
37 views
How to improve mp4 playback in Linux?
I recently replaced OSX with Linux in my Macbook Pro, which has 8GB of RAM. Most things run better, except mp4 playback. AVIs play just fine. It doesn't matter what player I use. If I convert mp4 to ...
1
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3answers
118 views
Windows 7 Media Player and Codecs
We use our Windows 7 Ultimate 32 bit PC as a Media PC.
If it matters, it is the Asus EB1501. A little slow, but it works.
In an effort to get .MKV files to play, I installed Shark007's codec pack. ...
2
votes
3answers
64 views
Do motion-heavy and motion-light scenes influence the total encoding time?
I'm an avid gamer. Occasionally I like to record my gameplay with Fraps and upload it on YouTube. For my encoding I use Komisar's x264 codec in VirtualDub with the following settings: link to image
...
4
votes
1answer
346 views
What are AC'97 and High Definition Audio?
I've read they were hardware audio codecs. But how are they different from mp3, aac codecs?
mp3 and aac codecs can also be implemented in hardware (can't they?).
What key differences do AC'97 and ...
1
vote
1answer
239 views
DVDs stuttering on Pentium 4 system with 4gb RAM?
My system used to play DVDs flawlessly. Now all of a sudden, it stutters. I have tested multiple commercial DVDs (standard definition, not HD), which are clean and not scratched. All of them stutter ...
2
votes
1answer
237 views
ffmpeg encoded video - seeking is “quantised” in VLC
I'm running the following command to convert an mp4 video into the VP8/Webm format:
ffmpeg -y -i lists.mp4 -f webm -vcodec libvpx -vb 600k -r 20
-acodec libvorbis -ab 64k -ac 1 lists.webm
When I ...
1
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1answer
185 views
ffmpeg: video file played OK on Ubuntu, but no sound on XP
I created a video clip using ffmpeg (vcodec: mpeg2video, acodec: AC3 5.1).
The file can be played normally on Ubuntu, but when I play it on an XP machine, there is no sound. I can play AC3 files and ...
1
vote
1answer
968 views
FFMPEG able to convert m4a -> mp3, but unable to convert mp3 -> mp3?
FYI: Fedora 8 running on Amazon EC2...
Having a difficult time with FFmpeg doing a (what should be pretty simple) conversion. I can get FFmpeg to encode an mp3 file from an m4a file using the ...
1
vote
0answers
317 views
Stream video with FFMPEG, “Output file does not contain any stream”
I would like to stream an H.264 encoded elementary stream wrapped in RTP headers to a port using FFMPEG.
I have tried the following command lines to no avail...
ffmpeg -i 1080p_1.h264 -f rtp -vcodec ...
1
vote
1answer
359 views
Play MKV file using Western Digital Media Box
I have a WD media box (which is 4 years old), which can play new MKV files, but I don't get any sound. Usually, it shows a message "Audio Channel 1 (Digital)" and there is no sound at all.
Can I ...
0
votes
1answer
80 views
Which file formats can be played slower (or faster) than normal in Windows Media Player?
Some file formats (or some files that are coded used some codecs) can be played in Windows Media Player "slow" or "fast". I can enable this by right clicking on the movie while watching, clicking ...
0
votes
1answer
140 views
I installed MSU Screen Capture Lossless Codec v1.2 to record with CamStudio
Several sources state, that this codec is the optimum codec for encoding screencasts taken with CamStudio. I downloaded it and did the setup. I get avi files when recording. But I cannot play them ...
1
vote
1answer
203 views
Adobe Premiere Pro and Elements only play the first seconds of sound for my videos
I have some movie clips from my camera.
The problem is that when I import such a video into Adobe Premiere Pro or Elements, the video is working all fine, but from the sound, I just hear a few ...
1
vote
2answers
88 views
Codec supported by most exernal DVD/Video players
My video camera records video using H.264 codec, although it does not look like old DVD players support this format.
I would like to convert these videos into some most commonly found, generic ...
4
votes
3answers
201 views
Is there still need for codecs in Windows 7?
Aren't modern OS already packaged with the basic and most used codecs? Is there any reason to install a codec pack on a Windows 7?
What are those reasons? Where can someone look for safe codec packs? ...
0
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0answers
44 views
Cannot get Xvid video codec to work
I have several videos that were encoded with XVID MPEG-4 video codec that I cannot get to play correctly on my Windows 7 laptop. Have no problems playing videos with other codecs.
I have tried ...
0
votes
1answer
134 views
What resources or software should my computer have to play M2TS file without delays?
My computer's configuration is:
Intel Core i5-2500 3.30GHz
RAM 8 GB
NVIDIA GeForce GTX 460 1GB
HDD 1GB 7200
Sound Blaster X-Fi Xtreme Audio
Monitor with 1920x1200 resolution
Windows 7 Ultimate ...
0
votes
1answer
76 views
Which codec is optimal for streaming a screencast with a small webcam PIP?
I need to stream a video feed generated in real time using CamTwist and QuickTime Broadcaster on OS X.
The video is of a fairly static desktop, with some mouse movements, and occasional mild changes ...
0
votes
0answers
115 views
VirtualDub can't load clip with audio encoded with sowt
I have a video taken with a Nikon D7000: Container: mov, Compression: avc1, audio: sowt
Im trying to rotate the video and recompress both video and audio. However, the resulting video is silent.
...
0
votes
0answers
81 views
How to combine H.264 and AMR into a streamable media format?
I know MP4 format support combining H.264 and AMR into one file. But MP4 file is not stream-able , because MP4 decoder need index data seeked from MP4 file.
I want to combine h.264 + AMR into a ...
2
votes
1answer
107 views
How do I play back a video encoded with x264 in QuickTime?
I recently encoded a screencast using x264. The video is here:
http://www.libsys.und.edu/dev/ssl.avi
It works fine in VLC, but QuickTime claims it needs extra components to play it. I'm confused. ...
2
votes
1answer
84 views
Do I really need a specific headset to get the benefit of Super Wideband Audio?
Back in 2003 Skype released their Super Wideband Audio codec which was supposed to be a lot better than all other audio codecs. (better sound less bandwidth.) And they give it away with a royalty free ...
2
votes
3answers
236 views
H.264 (MTS) videos freeze in WMP 12? Fresh install
I posted a question earlier (http://superuser.com/questions/271028/win-7-computer-locks-up-when-dragging-large-video-files-in-explorer-or-closing) but it seems that the issue isn't with the codecs. By ...
1
vote
1answer
62 views
How can I make preview of NEFs happen inside Windows Explorer?
Nikon does publish a "NEF Codec", which supposedly makes image programs able to recognize and use NEF files. However, it does not seem to cause Explorer to recognize the files:
Is this possible?
17
votes
4answers
801 views
What is a Codec (e.g. DivX?), and how does it differ from a File Format (e.g. MPG)?
I'm so confused... what is the difference between an audio/video codec (which apparently is a shorthand for "encoder/decoder", kind of like how "modem" is really "modulator/demodulator") and an ...
2
votes
1answer
302 views
Best video and audio format for small file size with very unnoticeable quality depreciation
I need to bring down disk space of my file-sharing website suggest me an audio codec and video codec which works with FFMPEG and can reduce file size with little or no loss in quality .
Thanks.
2
votes
3answers
73 views
Burning DVDs to disk - what audio codec should I pick?
I finally got around to burning all the DVDs to files, so that I can get rid of all the plastic media once and for all. Most DVDs have several audio codecs available (2 channel stereo or 5.1 Dolby). ...
0
votes
2answers
124 views
Rending on Mac: Major codec issues with video editing software
We bought a Mac Pro thinking that it would increase the speed of rendering than on an unoptimized PC. But we ran into codec issues with MPEG and WMV.
Our Tricaster PC outputs to MPEG, while it the PC ...
3
votes
3answers
546 views
How do i identify/play this file? (It's a WMV inside a MOV?)
I have a file that VLC does not open. It mentioned 'wmv3' so i tried media player with no luck. I use avicodec to check which failed.
I also seen some results saying it's a Quicktime file but somehow ...
3
votes
2answers
602 views
Video encoding: How much does the video file size increase with fps?
Given that the next blockbusters of e.g. Peter Jackson (The Hobbit) and James Cameron (Avatar 2) are going to be shot with a frame rate of 48 fps (or even more) - i.e. more than the usual 24 fps - I ...
2
votes
1answer
684 views
Best video format for Windows and Mac Compatibility?
I'm about to encode several videos that will physically distributed to clients running either Windows XP (and upwards) or OS X.
Is there a compressed format that would be playable on both platforms ...
