Codec Problems / Process does not start

Help/How To
1

Hello,

Sorry about my bad English, my english is not very good. I am from germany.

I have a problem with converting a .mkv video to an .mp4 video. I used a Nvidea GPU in my pc. First i configure shotcut to use this GPU. I use auto config an shotcut give me thumb up für the H264_nevenc Codec and some other NVIDIA Codecs.

But when i start to convert, Shotcut Abortes the process before it began. When i use the 264libx Codec, all work Fine.

But i dont want use this Codec.

Can anyone help?

Thanks,

Sven

2

Maybe your graphic card is too old.

Right click on the failed job and click on View log

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Check if you get these entries:

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QNudorp3Jw711×430 18.7 KB

If you can’t update your Nvidia drivers to at least version 522.25, and/or nvenc API to version 12, one solution is to disable Use hardware encoder
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See this discussion:

1 Like
3

Hello and good morning.

I have tried and figured out follolwing log entry:

[h264 @ 0000015cafa1e040] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264_nvenc @ 0000015caf9d3ec0] Loaded Nvenc version 12.2
[h264_nvenc @ 0000015caf9d3ec0] Nvenc initialized successfully
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264_nvenc @ 0000015caf9d3ec0] 1 CUDA capable devices found
[h264_nvenc @ 0000015caf9d3ec0] [ GPU #0 - < NVIDIA GeForce RTX 4070 Ti > has Compute SM 8.9 ]
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015cafa1e040] Increasing reorder buffer to 1
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] mmco: unref short failure
[h264 @ 0000015cafa1e040] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015cafa1e040] Increasing reorder buffer to 2
[h264 @ 0000015caf9a6c80] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a6c80] Increasing reorder buffer to 1
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] mmco: unref short failure
[h264 @ 0000015caf9a6c80] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a6c80] Increasing reorder buffer to 2
[h264 @ 0000015caf9a7080] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264_nvenc @ 0000015caf9d3ec0] Interlaced encoding is not supported. Supported level: 0
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a7080] Increasing reorder buffer to 1
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] mmco: unref short failure
[h264 @ 0000015caf9a7080] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264_nvenc @ 0000015caf9d3ec0] No capable devices found
[h264_nvenc @ 0000015caf9d3ec0] Nvenc unloaded
[h264 @ 0000015caf9a7080] Increasing reorder buffer to 2
[producer avformat] audio: total_streams 1 max_stream 1 total_channels 6 max_channels 6
[AVIOContext @ 0000015caf5cee80] Statistics: 710314 bytes read, 5 seeks
[chain avformat-novalidate] C:/Users/Anwender/Desktop/Test.mkv
checking VFR: pkt.duration 20
[link swresample] 6(5.1(side)) f32le 48000Hz → 2(stereo) f32le 48000Hz
[h264 @ 0000015caf9a7880] Reinit context to 1920x1088, pix_fmt: yuv420p
[h264 @ 0000015caf9a7c80] mmco: unref short failure
[h264 @ 0000015caf9a7c80] mmco: unref short failure
[h264 @ 0000015caf9a7c80] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a5480] mmco: unref short failure
[h264 @ 0000015caf9a5480] mmco: unref short failure
[h264 @ 0000015caf9a5480] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[h264 @ 0000015caf9a5880] mmco: unref short failure
[h264 @ 0000015caf9a5880] mmco: unref short failure
[h264 @ 0000015caf9a5880] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
Failed with exit code -1073741819
Failed with exit code -1073741819

I also have tried to disable hardware encoding. Same problem. It does not start.

My Graphic Card is a Nvidia GeForce RTX 4070 Ti. Version of game ready driver are 551.61

Did u have any other idea to solve this problem?

Best regards

Sven

4

Sorry, but no. I’m not familiar with this kind of failure. But no worries, I’m sure someone else will be able to help you with that.

5

I think this is a reason. Try with Export > Advanced > Video > Scan mode = Progressive.

6

Where can i find this? I dont have such a menu.

7

8

I find it and it will work!

Thank you very much!

9

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