如何使用 Gstreamer 从 PNG 图像创建 mp4 视频文件

Question

我正在使用 gstreamer 命令行界面，在从 PNG 图像创建 mp4 视频文件时卡住了。请各位大神帮忙解决一下。

使用以下命令，我从摄像机创建了 PNG 图像：

gst-launch-1.0.exe -v ksvideosrc ！队列 ！解码器！视频转换！ ！ multifilesink location="frame%05d.png"

我可以使用以下命令播放 pPNG 图像：

gst-launch-1.0 -v multifilesrc location="frame%05d.png" index=0 ！解码器！ glimagesink

但在从 PNG 图像创建 mp4 视频时，我从管道收到了 EOS：

将管道设置为 PAUSED ... 管道正在预滚... /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = image/png /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstPngParse:pngparse0.GstPad:sink: caps = image/png /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstPngDec:pngdec0.GstPad:sink: caps = image/png, width=(int)640, height=(int)480 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstPngParse:pngparse0.GstPad:src: caps = image/png, width=(int)640, height=(int)480 /GstPipeline:pipeline0/GstDecodeBin:decodebin0/GstPngDec:pngdec0.GstPad:src: caps = video/x-raw, format=(string)RGB, width=(int)640, height=(int)480, interlace-mode= (string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-纵横比/混合单声道，像素纵横比=（分数）1/1，色度=（字符串）sRGB，帧率=（分数）0/1 /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:src: caps = video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)0/1, format=(string)Y444 , interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right -flopped/half-aspect/mixed-mono，像素纵横比=（分数）1/1 /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:src: caps = video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)0/1, format=(string)Y444 , interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right -flopped/half-aspect/mixed-mono，像素纵横比=（分数）1/1 重新分配延迟... /GstPipeline:pipeline0/GstX264Enc:x264enc0.GstPad:sink: caps = video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)0/1, format=(string)Y444 , interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right -flopped/half-aspect/mixed-mono，像素纵横比=（分数）1/1 /GstPipeline:pipeline0/GstVideoRate:videorate0.GstPad:sink: caps = video/x-raw, width=(int)640, height=(int)480, framerate=(fraction)0/1, format=(string)Y444 , interlace-mode=(string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right -flopped/half-aspect/mixed-mono，像素纵横比=（分数）1/1 /GstPipeline:pipeline0/GstVideoConvert:videoconvert0.GstPad:sink: caps = video/x-raw, format=(string)RGB, width=(int)640, height=(int)480, interlace-mode=(string)progressive , multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-aspect/mixed-单声道，像素纵横比=（分数）1/1，色度=（字符串）sRGB，帧率=（分数）0/1 /GstPipeline:pipeline0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad1: caps = video/x-raw, format=(string)RGB, width=(int)640, height=(int)480, interlace-mode= (string)progressive, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-first/left-flipped/left-flopped/right-flipped/right-flopped/half-纵横比/混合单声道，像素纵横比=（分数）1/1，色度=（字符串）sRGB，帧率=（分数）0/1 /GstPipeline:pipeline0/GstX264Enc:x264enc0.GstPad:src：帽=视频/ X-H264，codec_data =（缓冲液）01f4001effe1001c67f4001e919b281407b602d41804150000030001773594000f162d9601000668ebec448440，流格式=（字符串）AVC中，对准=（字符串）AU，电平=（字符串）3 , profile=(string)high-4:4:4, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)0/1, interlace-mode=(string)progressive, colorimetry=(string)bt601, chroma-site=(string)jpeg, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-第一/左翻转/左翻转/右翻转/右翻转/半纵横比/混合单声道 /GstPipeline:pipeline0/GstMP4Mux:mp4mux0.GstQTMuxPad:video_0：帽=视频/ X-H264，codec_data =（缓冲液）01f4001effe1001c67f4001e919b281407b602d41804150000030001773594000f162d9601000668ebec448440，流格式=（字符串）AVC中，对准=（字符串）AU，电平=（字符串）3 , profile=(string)high-4:4:4, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)0/1, interlace-mode=(string)progressive, colorimetry=(string)bt601, chroma-site=(string)jpeg, multiview-mode=(string)mono, multiview-flags=(GstVideoMultiviewFlagsSet)0:ffffffff:/right-view-第一/左翻转/左翻转/右翻转/右翻转/半纵横比/混合单声道 /GstPipeline:pipeline0/GstMP4Mux:mp4mux0.GstPad:src: caps = video/quicktime, variant=(string)iso /GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/quicktime, variant=(string)iso 管道预装... 将管道设置为 PLAYING ... 新时钟：GstSystemClock /GstPipeline:pipeline0/GstMP4Mux:mp4mux0.GstPad:src：帽=视频/ QuickTime的，变体=（字符串）异，streamheader =（缓冲） /GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink：帽=视频/ QuickTime的，变体=（字符串）异，streamheader =（缓冲） 从元素“pipeline0”获得 EOS。 执行在 0:00:00.814042926 之后结束 将管道设置为 PAUSED ... 将管道设置为 READY ... 将管道设置为 NULL ... 释放管道……

Answer 1

要从您的 png 文件中创建一个 mp4，您可以使用以下管道：

gst-launch-1.0 -e multifilesrc location="frame%05d.png"
大写=“图像/png,帧率=30/1”！解码器！视频转换！队列 ！ x264enc ！队列 ！ mp4 多路复用器！文件接收位置=image.mp4

注意：

1. 如果您只需要 60fps 的视频，以上将创建一个 30fps 的 mp4 将 multifilesrc 中的大写更改为 caps="image/png,framerate=60/1" 对于 60fps 的视频。
2. 如果您有任何特定硬件，您也可以更改编码器 编码器。