New answers tagged

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I am able to get the hw-acceleration working through ffmpeg using Nvidia graphics card. I just thoroughly followed the steps described here. Hw Acceleratoin guide


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You are asking for a Video Production Switcher. This is what broadcasters use to switch between video sources (including multiple cameras, pre-recorded clip playback, computer video, etc.) There are some software solutions and some hardware solutions. While the software solutions seem less expensive (some even free), they make heavy requirements on the ...


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Assuming you want to record all 3 feeds at the same time and not mix you could get 3 decklink mini recorder cards: http://www.bhphotovideo.com/c/product/964122-REG/blackmagic_design_decklink_mini_recorder.html I don't know how well it would work recording 3 feeds at once, youd definitely need large ssds. Alternatively you could record in the camera or use ...


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I'm using lasted AVIDEMUX (2.6.911 version) for join the GoPro videos. It's very fast and easy to use. To start a "project", drag and drop the first file you want to join from windows explorer to avidemux window, than continue to drag and drop following the numeration of the GoPro files. To create the new joined video, select OUTPUT format to MP4c2Muxer, ...


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You can use ffmpeg, a free command-line tool, to do this. The basic command is ffmpeg -i input.mov -vf "setpts=(PTS-STARTPTS)/30" -crf 18 output.mov The 30 indicates the factor by which the video will be sped up.


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I'm not familiar with the setup you described, but does that adapter have some sort of iris control built into it? I have the adapter pictured below and it doesn't allow the BMPCC to adjust the aperture of the lens, which means I need to use the iris control to adjust the amount of light getting let into the camera. The vignetting is caused by how the ...


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I have the G20 and VidPro Xm-55... u r going to go into custom audio settings and then go to audio mix and just mix about two clicks up on internal microphone and let the external to the rest- that way you get clean sound with stereo separation. We do live music studio recording and when my overall level is set around 67/70 it seems to be perfect.


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I think not. AR-ish sounds like to want to elude something, here I think locking down the camera and simply generating the AR-elements in photoshop/illustrator, or if moving AR elements are cqlled for, After Effects and compositing them in premiere or After Effects would get you where I think you want to go. If the video is shot and not locked-down, you can ...


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I would use the Blackmagic Video Hub products to distribute any input to any output with no latency concerns (assuming you're going all sdi to sdi). Check it out on their website. This question certainly belongs here as it is directly relates to live video production with latency concerns. But, maybe I'm wrong in that regard. Though I urge you to check out ...


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That is not a good solution. With this solution you are now locked at the size and position of your window, not the source media. If you want to zoom in or out you have now lost that ability. Better solution is to use the timing controls and set the end condition to "Hold"


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Use -vf loop=parameters filter, see fine documentation. Note that this currently will put all video frames in memory.


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Use ffmpeg -re -stream_loop -1 -i file.flv -c copy -f flv rtmp://x.y.z This option is buggy when the input it is applied to is filtered with another input, like in an overlay. For a single input - output chain, it works fine.


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You don't mention either how (or IF?) you are editing anything here, or what forms of storage, distribution, archiving, etc you anticipate? You are probably correct that MP4 is a more compatible distribution format, but distribution format does not necessarily have to be identical with recording and editing format. I would not anticipate any issue with ...


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I see four basic differences (in what I believe is the correct priority order): Lighting. The lighting on Kevin Spacey is classic three-point lighting with warm fronts, a 2:1 key/fill ratio, and cold back/rim/hair light. Proper 3-point lighting is the biggest difference between the pro look of episodic television and the amateur look of most YouTube ...


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Definitely, it will degrade the video quality after many times of converting. I advise you to convert the file to the one with original settings. The best choice is to use a video editor which allows you to edit and convert files to desired ones.


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Advanced Authoring Format (AAF) and some MXF operational patterns (OP-2a, 2b, 3a, and 3b) should be able mix bit rates. I say "should" because I don't have any good way of testing right now and I don't know of any commercial systems that are making heavy use of those MXF OP's.


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All codecs, unless they are truly lossless, suffer from concatenation errors. Every time you encode with a codec, decode, and re-encode with the same or a different codec you will degrade the quality of the video. It isn't as precise to figure out just how bad it will be as when you could count the generational loss of re-recording to tape as the source and ...


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FourCCs are Microsoft's ID tags for streams e.g. avc1 for H.264/AVC or mp4a for an AAC audio stream. The container doesn't really matter. If you want to change the FourCC, use ffmpeg like so ffmpeg -i input.mov -strict -2 -c copy -vtag ABCD new.mov where ABCD is your new 4CC/tag. You current file already shows avc1 for the video stream, which is default ...


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Consider a couple of products from Australian microphone maker Røde. Røde VideoMic Me: http://en.rode.com/microphones/videomicme Røde smartLav+: http://en.rode.com/microphones/smartlav-plus Røde makes pretty high-quality products and are leaders in making new products like these mcicrophones which are designed to plug directly into the TRRS connectors of ...


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A compressor microphone that worked for me is the Arcano Black 01/Arcano bku-01 (those are hard to find,but they are SUPER GOOD!).Also you could go for the iRig Mic Studio,I dont know if this one works on galaxy but its a great mic!Also the iRig come with a free app to record multiple sound sources,and that is pretty handy since you are going to make a ...


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It's possible. Use ffmpeg -loop 1 -i image.png -f lavfi -t 5 -i anullsrc -i video.mp4 -i music.wav \ -filter_complex "[0]trim=duration=5,fps=N[pre];[3]showwaves=WxH:r=N[b]; \ [b][0]overlay=shortest=1[post]; \ [pre][1:a][2:v][2:a][post][3]concat=n=3:v=1:a=1[v][a]" \ -map [v] -map [a] out.mp4 The image and video have to be ...


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In my first encounters with Premiere, I ran into the problem that there are many ways to render clips, and only one correct way, which is to render the sequence containing the clip (and its effects), not the clip itself. It is quite easy to have the clip, not the sequence, selected, hit Media Export and have it encode the wrong thing. Make sure you have ...


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Yes. By definition, any time you save an audio or video file using a LOSSY compression scheme, you will lose something (by definition). Now, modern codecs have been getting better at minimizing perceptible losses. But it is always preferable to avoid ANY extra compression steps. Until the project is completely finished and ready for distribution, it is ...


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If the codec is not lossless, such as Quicktime Animation Codec; true lossless, then yes. But if you are using a good encoder, I would gather even after 100 generations of degredation would you be able to even visually see the difference if you continually re-encoded the file outputs using MP4 at a high bitrate- say 30mbps for 1080p. Lower bitrates, ...


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Are you layering the ProcAmp Filter onto the same clip? It's possible theres a bug with that... there are bugs. You could try taking your base clip and putting it on a sequence. Add your ProcAmp. Then right click the sequence in your Project window -> Create New Sequence from Clip. Now you have a nested sequence of your original. Try applying the ...


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Well I can't say I know how it would be done; but RED (www.red.com), their R3D video format uses a debayer process. I own a RED Epic. It shoots at up to 5K 100 FPS. When out in the field, and wanting to view the video on say a laptop, the throughput of uncompressed (or near) say 3:1 5K is huge. So RED uses a debayer process; where the pixels are ...


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MP4 isn't an ideal format for intermediate saves. If you know you'll be re-opening the file, save it as losslessly as practicable, and use MP4 only for the final output. That said, depending on the encoder and settings you probably don't lose much if anything on subsequent saves. MP4 and similar codecs work by decimating the higher frequencies (details, ...


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If the only difference is bitrate, then any container which accepts variable bitrate streams, will fulfill your requirement e.g. MP4, MKV..etc Step 1 is to encode your segments, ideally using the same encoder, to different bitrates with all other parameters being the same e.g. via ffmpeg, ffmpeg -ss 0 -t 5 -i input.mp4 -b:v 1000k seg1.mp4 ffmpeg -ss 5 -t ...


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Yes. Every time you "save" video in video-editor, you will re-render it with codec. Most codecs lose some video information for compression. So, every time you will lose some more information.


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If I've understood you correctly, your video appears upright when viewed in portrait orientation and rotated in landscape. This suggests the image is stored in a landscape matrix but with no rotation tag set. If so, there are two things you can try using ffmpeg, a free command line tool. ffmpeg -i input.mp4 -c copy -metadata:s:v rotate=90 output.mp4 If ...


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You could do it with After Effects and scripting. After Effects has a javascript-based API called extendscript that allows you to programatically create compositions - which can be as complex as you like, using pre-shot and/or generated footage, and effects. Extendscript means that AE can be run from the command line–on a server for instance. You can ...


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End up using filters as this answer guides >> http://video.stackexchange.com/a/15479/10894 ffmpeg.StartInfo.Arguments = "/c ffmpeg.exe -i C:\\Users\\mtst\\Desktop\\Clips\\h\\a1.mp4 -i C:\\Users\\mtst\\Desktop\\Clips\\h\\a2.mp4 -i C:\\Users\\mtst\\Desktop\\Clips\\h\\a3.mp4 -filter_complex \"[0:v]setpts=PTS-STARTPTS[v0]; [0:a]asetpts=PTS-STARTPTS[a0]; ...



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