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23rd January 2022, 17:33 | #1 | Link |
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MPEG-4 AVC H.264 (Intel Quick Sync) not for AVI but only for MP4 videos?
As I found out the
MPEG-4 AVC H.264 (Intel Quick Sync) video codec is only offered for MP4 as target container but not for AVI (at keast not in XMedia Recode). Is this correct? I though that video and audio codecs should be independent from video file container What exactly does Intel Quick Sync mean? Is this for usage of CPU/GPU built-in firmware feature? Since which Intel CPU generation is this offered? Last edited by mike23; 23rd January 2022 at 17:40. |
23rd January 2022, 21:16 | #2 | Link |
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Intel Quick Sync is hardware accelerated decoding and/or encoding since Sandy Bridge generation
Maybe you are using audio incompatible in AVI container ? or Maybe it's a limitation of XMedia Recode quicksync video encoding works ok with ffmpeg eg Code:
ffmpeg -f lavfi -i testsrc2=rate=24000/1001:duration=10:s=640x480 -c:v h264_qsv -an -b:v 1000k test.avi But why would you want to use AVI container ? There can sometimes be issues with AVC in AVI for some software especially with b-frames; it's less compatible than say MP4 container |
23rd January 2022, 21:29 | #3 | Link | |
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https://en.wikipedia.org/wiki/Audio_...ve#Limitations
Quote:
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24th January 2022, 03:00 | #4 | Link |
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Yeah, H.264-in-AVI has never been recommended or well supported. Heck, MPEG-4 pt 2 (divx/xvid) wasn't recommended or well supported for .avi either.
AVI is an ancient format that Microsoft has been trying to deprecate for >20 years now, and hasn't been updated since 1996. As lvqcl points out, it predates b-frames. Why do you want to use it? |
24th January 2022, 07:02 | #5 | Link |
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Ok, thank you.
That means encoding a video into MP4 with the same encoding parameters will result in exactly the same video file no matter whether I use AVC / H.264 or AVC / H.264 (Quick Sync) The only difference is the time required for encoding. correct? |
24th January 2022, 15:59 | #6 | Link | |
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Quote:
Not if the 1st option indicates "CPU" or libx264 You can try it out on a short test |
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