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| Unofficial VirtualDub Support Forums > Newbie Questions > *.mp4 Video Not Visible In Preview Subwindow |
| Posted by: mattad Jul 31 2012, 05:42 AM |
| At first I installed the MP4 plugin v0.1 from http://forums.virtualdub.org/index.php?act=ST&f=7&t=15356 Then loaded a *.mp4 video by drag&drop onto VD. Yes, the video seems to be accepted by VD/plugin however the preview shows no content but only a black rectangle. Even when I move the horizontal slider. VD file information shows no information dialog. MediaInfo tool shows as video codec: MPEG-4 (Base Media/Version2) Whats wrong? I want to cut, paste and delete certain parts of this *.mp4 video just as I do it with *.avi videos. For positioning I need a visible hint about the current scene. Is there any other *.mp4 plugin which helps be to do this? Matt |
| Posted by: Placio74 Jul 31 2012, 06:16 AM | ||||
"Uninstall" and forget about this plugin - doesn't work properly with MPEG-4 AVC. Try http://fcchandler.home.comcast.net/~fcchandler/Plugins/QuickTime/index.html BTW
It's only container format info - take a closer look what is format of video stream. |
| Posted by: mattad Aug 1 2012, 09:50 AM |
| Ok, thank you. Video is now visible. But can I somehow (after deletion of some parts) save the remaining video as *.mp4? Or am I forced to save it as *.avi? Matt |
| Posted by: Placio74 Aug 1 2012, 10:34 AM |
| No. VirtualDub still save video only to AVI container. Except experimental version where You can use external encoders - but that method requires transcoding. Other... You can later change container to MP4 or MKV. Also, You can try other editor - Avidemux. |
| Posted by: mattad Aug 1 2012, 03:45 PM |
| >You can later change container to MP4 or MKV. How exactly can I change the container later from AVI to MP4 (without re-encoding?)? |
| Posted by: Placio74 Aug 1 2012, 06:16 PM | ||
Using FFmpeg:
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| Posted by: mattad Aug 2 2012, 12:25 PM | ||
Using FFmpeg:
Thank you. But after conversion this way there is no audio any more. In original *.mp4 the audio codec is MP4 Audio mp4a After conversion to *.avi the audio codec is labeled as "Unknown". Does AVI not like/is incompatible with mp4a? |
| Posted by: evropej Aug 2 2012, 01:30 PM |
| Would you like another suggestion other vdub? There is alternatives which are freeware and brainless to do when it comes to transcoding video. |
| Posted by: Placio74 Aug 2 2012, 02:14 PM |
| MP4A it's FourCC code commonly used for AAC audio format stored in MP4 container. Do you have installed http://fcchandler.home.comcast.net/~fcchandler/AACACM/index.html? |