Here is a full log of the output with GST_DEBUG=GST_CAPS:6. Source = ("filesrc", "file-source")ĭemux = ("qtdemux", "demux")ĭnnect("pad-added", demux_pad_added, h264parser)įull Python source: deepstream_test_2.txt (10.9 KB) Qtdemux_src_pad.link(h264parser.get_static_pad("sink")) Here are the modified code snippets: def demux_pad_added(qtdemux, qtdemux_src_pad, h264parser):Ĭaps = qtdemux_src_pad.get_current_caps() When I run the sample unaltered with sample_720p.h264 as source, it works, so the issue is most likely with the way I am adding qtdemux or dynamically linking the Gstreamer pipeline. The problem is the pipeline fails to start with an internal data stream error because qtdemux cannot be linked to h264parser. To support MP4, I modified the sample app to add a qtdemux element, and dynamically linked it to the h264 parser element based on the deepstream_test_3 app. Eventually, I want to use an RTSP camera source. The Bottom LineĪs you see, with VideoProc Vlogger Volgger, you just need to spend several minutes and a few clicks, and you can finish demuxing MP4.I am trying to modify the deepstream_test_1.py app included with the DeepStream Python bindings to take an MP4 file as input (sample_1080p_h264.mp4) instead of an H.264 elementary stream (sample_720p.h264). It will take you dozens of seconds, based on your audio file size. Then in the new window, name the audio file, choose the saving location, switch the Format option to MP3 or another audio format which you like, and lastly just choose the Start button to make VideoProc Vlogger start processing the file. Click on the Export button, which is right located in the right lower position of the preview window. After all set, now what you need to do is just export the audio file. Optional: If you want to continue with more editing on the audio file, still right-click on the audio file in the timeline and choose the Audio Editor, which will lead you to the audio editing page, with options like Fade In, Fade Out, Equalizer, Effects, and more. Then you will see the audio in the MP4 moving to the Audio Track. Next, find Detach Audio option and click it. Right-click on the video file in the timeline. Now, you can start with the demuxing job. Then drag the video file into the Video Track in the timeline. Now in the top left corner of the interface, click on the + menu, and then choose the Add Media option to import the video file. Name the project and click on the + New Project button to the next step. After installation finishes, open the application, and it will require you create a project. After you download VideoProc Vlogger, first, please run the downloaded file and install it on your Windows or Mac computer. So why not download it now, and follow the step below to check how VideoProc Vlogger help you with the job? How to Demux MP4 with VideoProc Vlogger For audio, you can also use it to adjust the sound volume, reverse-play the audio, fade in/out the audio, add effects to the audio, and more. VideoProc Vlogger can help you more than just demuxing MP4. And in this guide, we recommend you use VideoProc Vlogger. so mostly the output which im getting in demuxing.c is raw format. the h264 file whic i got is somewhat the same size of the input file. But when i run a command line task for demuxing using demuxing command the size of the demuxed video file ie. So people can edit the audio track individually, only save the audio track for sharing, or more purposes.Īnyway, this is a very simple but common work when we are editing a video file. The size of the file which i get as the output from Demuxing.c is 100 times the input file size. Mostly, it is just about the audio track. To put it simply, demuxing MP4 simply means extract the audio or subtitle track from the MP4 file. They are not full applications, just examples taking some MP4 files as input and displaying some information about the media samples contained in the file. The problem I have is that this MP4 format (xvcs hd - sony ax53) is not accepted by any program except My MP4Box GUI 0.6.0.6, that does the demux part, but can't mux it back! Is there a program that does that? - A user from Sony Community We have added to GPAC some sample applications demonstrating how to use GPAC to demux MP4 files. Hi, since I record metal shows I am in the position where I need to demux the MP4 files, so I can edit the audio part.
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