<div dir="ltr">Hey,<br><br>I am rendering a video file from input pictures that come
from a 3D engine at runtime (I don't pass an actual picture file, just
RGB memory).<br>This works perfectly when outputting MP4 using CODEC_ID_H264 as video codec.<br><br>But
when I want to create an MPG file using CODEC_ID_MPEG2VIDEO, the
resulting file is simply broken. It is unplayable by any player* and
when I then want to transform that MPG to MP4 in another step (I need to
do that to concatenate it with some other video, which only works with
MPG afaik), the resulting .mp4 file has both videos, but many frames
from the original MPG video (and only video!) are simply skipped.<br><br><span style="font-size:75%;line-height:normal">*Well, VLC manages to play it starting at some random second, playing only sound and some weird pictures...</span><br>
<br>At
first I thought the MPG -> MP4 conversion was the problem, but then I
noticed that the initial MPG, which comes from the video render engine,
is already broken, which would speak for broken headers. Not sure if it
is the system or sequence headers that are broken, though. <br>Or if it could be something totally different.<br><br>If you want to have a look, here is the file:<br><a href="http://www.file-upload.net/download-7093306/broken.mpg.html" class="">http://www.file-upload.net/download-7093306/broken.mpg.html</a><br>
<br>Again,
the exact same muxing code works perfectly fine when directly creating
an MP4 from the video render engine, so I'm pretty sure the input data,
swscale(), etc. is correct. The only difference is that CODEC_ID_H264 is
used and some additional variables (like qmin, qmax, etc.) are set,
which are all specific to H264 so should not have an impact.<br><br>Also, neither avformat_write_header nor av_write_trailer report an error.<br><br>As
an additional info, when viewing the codec data of the MPG in VLC
player, it is not able to show the FPS, resolution and format (should
show 640x360, 30 fps and 4:2:0 YUV).<br><br>I am using a very new (some weeks, maybe) FFmpeg version, which I compiled from sources with MinGW.<br clear="all"><br>-- <br><font color="#666666"><font size="1"><font face="Tahoma">Jan Drabner </font></font></font><font face="Times New Roman"><font size="3"><font color="#666666"><font face="Tahoma"><font style="font-size:7pt" size="1">׀ TD Programming Engine & Animation</font></font></font></font></font><p style="margin-top:0.05cm;margin-bottom:0.05cm;line-height:100%">
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<font color="#ff0000"><font face="Times New Roman, serif"><font size="3"><font face="Tahoma, serif"><font style="font-size:7pt" size="1">zoobe</font></font></font><font color="#666666"><font face="Tahoma, serif"><font style="font-size:7pt" size="1"> message
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<font color="#666666"> <font face="Times New Roman, serif"><font size="3"><font face="Tahoma, serif"><font style="font-size:7pt" size="1">tel:
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<font color="#666666"> <font face="Times New Roman, serif"><font size="3"><font face="Tahoma, serif"><font style="font-size:7pt" size="1">amtsgericht
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