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10

You can encode to Theora video and Vorbis audio with ffmpeg if it has been compiled with --enable-libtheora and --enable-libvorbis. Depending on your ffmpeg version the default settings may not provide good enough quality. Therefore you must add some additional parameters to enable a constant quality type of mode for the video. Theora video Adjust video ...


5

What you are talking about is upscaling and any current HDTV will do upscaling automatically. Upscaling doesn't work miracles though, it will only make it so that the lower quality signal can be watched on a higher quality display. It just multiplies the pixels so that a 720 by 480 (.9 pixel compressed) signal for example doesn't end up only taking up 1/4 ...


5

ffmpeg has removed their x264 presets so the -vpre setting doesn't work any more. Now, I have a script for converting video files to a format my Cellphone can handle. ffmpeg -i input.avi -sws_flags lanczos+accurate_rnd -vf "scale=320:240" -c:v libx264 -crf 20 -preset veryslow -profile:v main -tune fastdecode -c:a copy output.mkv I'll explain each option ...


4

Thanks to Brads recommendation, I used ffmpeg for the job. Here is a small bash script that converts all the mp3 files to mpeg4 avi files (a jpg image must be included in the folder): #!/bin/bash # Requires: ffmpeg # Usage: ./convert.sh for file in *.mp3; do ffmpeg -i *.jpg -i "${file}" "${file%.*}.avi" done Some more info here and here, but that ...


4

You can use wonderful ffmpeg for your desired workflow. There is a guide here on this page but once you have the ffmpeg installed, you can simply cd into your folder with sequence, and type in your terminal: ffmpeg -f image2 -pattern_type glob -i '*.png' -vcodec qtrle -r 25 -s 1920x1080 test.mov To understand the options, you can check the documentation ...


4

The cabling is likely your problem. The composite cables you're using (red, yellow, white) will only move analog signal from the set top box to the TV. Likewise with RG59 or RG6 (coaxial). While both varieties of cables there are technically capable of passing digital signals (they don't care... they're just dumb cables), set top boxes typically only ...


3

Wonderful ffmpeg command line utility is the solution. Just check their documentation, but something like the following will probably work for your case: ffmpeg -i video.mts video%05d.png This will take your video, and create video00001.png, video00002.png... files in the same folder. You can find a lot of guides for ffmpeg, or ask here for a specific ...


3

Devices are often picky, and specifications are usually too uninformative so it's always trial and error. For example, your link indicates that the phone supports MP4 playback, but that is simply a container than can utilize several video and audio formats. MPEG-4 part 2 video and AAC-LC audio (partially based on the working video details you provided) ...


3

If you had just 4:3 and 16:9 videos, I would suggest: ffmpeg -i input.mov -filter:v 'scale=-1:768;crop=1024:ih' \ -c:v libx264 -crf 23 -preset veryfast output.mp4 That would scale a video to a height of 768, scaling the width to keep the aspect ratio; and then it crops the width to 1024, keeping the height at 768. However, the fact that you are using 1:1 ...


3

I'm trying to help. First, I don't understand why you're saying FFMPEG H.264 is not the input format? I don't know the FFMPEG command line well enough (is there anyone who does? ;) ). There's got to be a switch for multipass encoding. I know there are some built-in presets you could probably use and do almost certainly what you're aiming for. These are ...


3

For a server, you definitely want ffmpeg. I would also strongly recommend compiling it yourself (those are Ubuntu instructions, but should work for Debian as well AFAIK) - the best AAC encoder available for ffmpeg (libfdk_aac) cannot be redistributed alongside x264 (because of the GPL), and the version of ffmpeg in the repositories is probably too old for ...


3

Many different factors can contribute to stutter in video playback. It could be a CPU issue (check your CPU when playing the video) in which case, a simpler codec or a player that can leverage the graphics card for decoding would help. It could also be data rate related though. In this case, using a simpler format would actually compound the problem as ...


3

Apparently by default ffmpeg only copies one stream of each type. To tell it to copy all streams, you need -map 0 So, this does it: ffmpeg -i "concat:a01.mxf|b02.mxf" -y -map 0 -c copy result.mxf


2

How old of a Mac? MPEG Streamclip is a great option. This free software requires at least Mac OS X 10.2 (Jaguar) and QuickTime 6. It is also compatible with Mac OS X 10.3.x (Panther), Mac OS X 10.4.x (Tiger), Mac OS X 10.5.x (Leopard), Mac OS X 10.6.x (Snow Leopard), OS X Lion, and QuickTime 7. It works with PowerPC and Intel based Macs. Unless you are ...


2

FFmpeg should be able to do this - assuming you don't mind getting down with the command line (there may be some GUI options out there too possibly). My Olympus E-P3 produces .MTS files - I assume they're similar (AVC/AC3 in a Blu-Ray Video wrapper). I ran the following command: ffmpeg -i 00001.MTS -vcodec copy -acodec copy -f mp4 00001.mp4 That just ...


2

it is a problem with gamma settings youre using and QT has its own gamma settings, dont bother. it will display only in QT that way... also check for alphas, but im not so sure that mp4 can support alpha channels... only qt mov with animation codec has alpha.... as i know...


2

Adobe Premiere Elements is like $80 and does all that including stabilization. I use Premiere pro on my main comp and you elements on my backup computer since I couldn't afford another copy. It's not free but I've looked for free editors and you won't find anything free that does stabilization. Elements project files can be imported in to Premiere Pro so ...


2

For amateur events, SDI may be overkill compared to using simple Component. The key for long runs is to separate the various components so that they don't degrade. There is a similar question here about long distance runs. As for HDMI to SDI, there should be no quality loss compared to HDMI as both are digital formats supporting full uncompressed HD ...


2

I spent my eveening but finally found a working software. That's not a freeware :( 69 boxes, but it works so I'll buy it. This is Wondershare Video Converter Ultimate. Don't hesitate to edit this answer if you feel that my answer is too spammy. Happy converting


2

If you select your clip and go to the Clip menu, then choose Analyse Content, Premiere will attempt to identify speakers and even attempt to dictate what is being said. You can assist this analysis by providing a script file to it by adding either an Adobe Story Script file or a TXT file to the Reference Script option. I don't have any experience with how ...


2

Amazingly, the best place to start with a question like this is Youtube. Believe it or not they have help file that explain the process with quite a bit of detail: https://support.google.com/youtube/bin/answer.py?hl=en&answer=1722171&topic=2888648&ctx=topic On Youtube itself many others have offered up video tutorials on how to do it: ...


2

Please note this is UK legislation After some research I found the following in a Government consultation paper: From MODERNISING COPYRIGHT: A modern, robust and flexible framework http://www.ipo.gov.uk/response-2011-copyright-final.pdf There is a clear mismatch between what is permitted by law and the type of private copying that most people think is ...


2

The 'interface connector' is (almost certainly) a serial control port, not a video output. LVD stored composite analog video, so there are no chroma or difference signals available to assist in digitizing the video.


2

You are best off to convert from a supported format (DVI, HDMI, maybe even DisplayPort) to SDI. SDI cards are not designed for gaming, they are designed for workstations and video. You aren't going to get a good quality gaming graphics card with SDI outputs.


2

Taking a closer look at the footage now that I'm at home, it's mostly the level of activity and motion in the shots. Even in the Sony video, the quality absolutely falls apart any time that there is high motion and unstable video. The way video compression works, it depends on predictable and smooth motion to achieve good compression results, especially ...


2

There are a few problems here that need to be addressed. First, the pitch shot is vertically oriented or "portrait" (vs landscape). This is considered very, very bad practice. This is a huge and constant amateur mistake because many amateurs now shoot video with their tablets and smartphones and hold the device the way they normally do, vertically, but ...


2

That's way more than h.264 can handle. The maximum resolution for h.264 is 4096×2304 with Level 5.1 or 5.2. http://en.wikipedia.org/wiki/H.264#Levels There are lossless codecs who can theoretically handle this video resolution but it would make no sense to do this. There is no hardware capable of playing videos in this resolution at any acceptable frame ...


2

If you copied your command there then your issue is probably -acodec:0 mp. That should be -acodec:0 mp3. You can just use -c:a mp3 to apply the encoding options to all audio tracks at once, no need to apply them for each individually. Other than that your mapping is correct and shouldn't be the issue. Edit: To conclude the discussion in the comments ...


2

Given your are using a VPS this is no suprise (guessing you only have a single core with 1-3GHz) and you won't be able to crunch the conversion down to a few minutes. You can try using -c:v libx264 -presets ultrafast but I'd guess it will still take you about 45-60 minutes to encode. Also remove the -crf option when using a preset. Be advised that the ...



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