Avidemux Forum

I do not have linux on this PC (only on raspberry PI), but if you want to run any tests, or instruct me what details to send I will be happy to help.

same error during compiling Handbrake:
lutil -lrt -lpthread -lm -ldl -lc -Wl,--end-group
  : /usr/bin/ld: ./contrib/lib/libSvtAv1Enc.a: error adding symbols: formato del file non riconosciuto
  : g++: error: linker command failed with exit code 1 (use -v to see invocation)
  : gmake: *** [../test/module.rules:49: HandBrakeCLI] Errore 1

file /app/avidemux2/buildCore/ffmpeg/build/libavutil/adler32.o
/app/avidemux2/buildCore/ffmpeg/build/libavutil/adler32.o: LLVM IR bitcode

for me it's not good this, must be:
ELF 64-bit LSB relocatable, x86-64

Quote from: eumagga0x2a on June 18, 2025, 10:25:25 PM

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Code Select Expand

libavutil/adler32.o: file not recognized: formato del file non riconosciuto
cc: error: linker command failed with exit code 1 (use -v to see invocation)

Is this linker failure specific to building Avidemux with clang? Does building with gcc fail as well?

after installing this not works:
clang-as-default gdc-14 gdc-14-x86-64-linux-gnu libgphobos-14-dev libgphobos5 libpython3.13-stdlib python3.12-gdbm python3.12-tk python3.13 python3.13-gdbm python3.13-tk

try to remove and see if it's all ok

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Code Select Expand

libavutil/adler32.o: file not recognized: formato del file non riconosciuto
cc: error: linker command failed with exit code 1 (use -v to see invocation)

Is this linker failure specific to building Avidemux with clang? Does building with gcc fail as well?

Hi guys,
i can not compile latest code of avidemux in ubuntu, i can attached the log.
Thanks

Thank you very much for the log and further info. I don't have access (even briefly) to an AMD GPU with VCN 4.0 as in Navi 3x RX 7900 XTX is based upon, but I'll try to check on VCN 3.1.2 on Linux (no Windows on that PC) in near future to see how it fares with field-encoded H.264 streams.

Not related to the topic, but actually more important:

Potential device_guid :
0xb8be4ccb 0xcf53 0x46ba  8d  59  d6  b8  a6  da  5d  2a
  20:06:32-937 [lookupCodec] No decoder device for codec AV1 8 bits and size 1280 x 720 found
That's strange. The card is definitely able to decode AV1. Unsure why our query returns a negative result.

Thank you for more explanation. Attached admlog.txt.

I made last year a present for me replacing my ancient setup of i7 4770 Radeon HD 6990 :-) with AMD 7950x + Sapphire RX 7900 XTX Pulse.

Actual GPU driver is 32.0.12033.1030.

Quote from: eumagga0x2a on June 17, 2025, 06:01:49 AMYou don't need to run encoding to verify the issue, just enable filtered video playback in Avidemux.

Actually, just play the source video back in Avidemux, no matter filtered or not. The "slideshow" happens obviously already at the stage of decoding the video stream.

Anyway, I cannot reproduce the issue on Windows 11 with 250526_b008a4d7098-fflibs 7.0.2-VC++ and DXVA2 hw decoding enabled either. Same with my local cross-compiled build off the latest git master.

The problems you experience with DXVA2 decoding enabled are probably a result of some limitation of the graphics card hw or graphics driver on your system.

Quote from: IcePlanet on June 16, 2025, 10:07:55 PMFor unknown reasons there was in HW Accel ticked "Decode video using DXVA2 (windows)". After removing the tick it worked perfectly.

Using hw decoder is normally very beneficial for the efficiency of any processing (and VDPAU on Linux/NVIDIA works with your sample), but it looks like field-encoded source video stream poses a problem for the hw accel infrastructure of the graphics driver on your system. Could you please provide admlog.txt from just launching Avidemux to get an idea of the graphics card and driver in use?

You don't need to run encoding to verify the issue, just enable filtered video playback in Avidemux.