Most of the media we consume today is progressive. Interlaced can be more prone to motion artefacts. It differs from progressive scan ( p) that captures the entire image per frame each time instead. Note: with AVCHD on some cameras, you have the option to record with interlaced scan ( i) where an alternate sets of lines are displayed for each frame, meaning that only half the image is captured at a time. HD Ready at 100/120p is available on the A7R II only. File Formatġ00p and 120p in Full HD is not available on the A7 I series, the A7 II and A7R II. Recording at high frame rates also helps you create better slow motion videos.īelow are the frame rates available for each format. The higher the frame rate, the smoother and sharper your video will appear, especially when movement is involved. To give you an example, the cinema standard is 24fps (frame per second). There are several settings that can influence the quality of your video footage including resolution and bitrate.įrame rate means the number of individual images that are recorded every second. Sony A7 III, A7R III, A9 Video Quality Settings If you decided to buy something after clicking the link, we will receive a small commission. Reminder: the links below are affiliate links. To know more about our ethics, you can visit our full disclosure page. If you buy something after clicking the link, we will receive a small commission. Within the article, there are affiliate links. We were not asked to write anything about these products, nor were we provided with any sort of compensation. Older cameras (A7 II series and below) have an older menu system and there can be more differences concerning the location, or the availability of some settings.Įthics statement: the following is based on our time with many A7 and A9 models, and more specifically with the A7 III and A7R III which we own. Some of these settings might also be assigned to custom buttons, the Fn Menu or My Menu.Īll the settings related to video are marked with a film icon in Sony’s menu. Please note that the location of some settings might differ slightly from one product to another. Note: all the settings highlighted in this post include information about their location in the camera’s menu system. Any difference between the various models is mentioned throughout the article. The content of this article is based on the A7 mark III, mark IV and A9 generations, but it can also be considered valid for older products. Here is what we have learned so far about shooting video with the Sony A7 III and other E-mount models, including a few video tips that we hope you find useful. When we pit cameras against one another on Mirrorless Comparison, we don’t do it just for stills but also to analyse the video performance. Thanks to the quality of their full frame sensors, the great high ISO performance and the advanced settings to control the image, the A7 series has become a popular choice amongst filmmakers. However, killing the old feed and then streaming a different resolution into the device does not change the advertised capabilities, and just scrambles the screen in vlc.The Sony A7 III sports excellent video capabilities, as do many other A7 models. $ ffmpeg -f v4l2 -list_formats all -i /dev/video2įfmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developersĬonfiguration: -prefix=/usr -disable-debug -disable-static -disable-stripping -enable-avisynth -enable-fontconfig -enable-gmp -enable-gnutls -enable-gpl -enable-ladspa -enable-libaom -enable-libass -enable-libbluray -enable-libdav1d -enable-libdrm -enable-libfreetype -enable-libfribidi -enable-libgsm -enable-libiec61883 -enable-libjack -enable-libmfx -enable-libmodplug -enable-libmp3lame -enable-libopencore_amrnb -enable-libopencore_amrwb -enable-libopenjpeg -enable-libopus -enable-libpulse -enable-librav1e -enable-libsoxr -enable-libspeex -enable-libsrt -enable-libssh -enable-libtheora -enable-libv4l2 -enable-libvidstab -enable-libvmaf -enable-libvorbis -enable-libvpx -enable-libwebp -enable-libx264 -enable-libx265 -enable-libxcb -enable-libxml2 -enable-libxvid -enable-nvdec -enable-nvenc -enable-omx -enable-shared -enable-version3 This works fine: $ ffmpeg -f lavfi -i color=c=black:s=1920x1080:r=25/1 -vcodec rawvideo -pix_fmt yuv420p -f v4l2 /dev/video2 As an example, I feed a 1920x1080 black screen video into /dev/video2, and then open it in vlc. I'm trying to switch from one advertised resolution/framerate to a different one on the fly, preferably while other applications are consuming the v4l2loopback feed.
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