SIGSEGV crash in android while converting MKV to MP4

[yeamin27]

Description
I am trying to convert a video from MKV to MP4 in Android using the test app from here-> ffmpeg-kit-test-maven-central

Expected behavior
Execute command successfully.

Current behavior
After processing a few frames app crashes for a particular video.

To Reproduce
Input this video,
For input path I am using FFmpegKitConfig.getSafParameterForRead(context, inputUri)
And for output I am using FFmpegKitConfig.getSafParameterForWrite(requireContext(), outUri)
Execute the following command:

INPUT_PATH -map 0:s? -scodec mov_text -map 0:a? -map 0:v:0? -f mp4 -vcodec h264 -profile:v baseline -level 3.0 -pix_fmt yuvj420p -color_range 2 -map_metadata 0:g -acodec copy OUTPUT_PATH

Logs

libc: Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 7648 (pool-1-thread-1), pid 7453 (.ffmpegkit.test)

Environment

• Platform: Android
• Architecture: arm64-v8a

Other
I've just modified the test app a little to take an input file and use uri to get saf parameter.

[tanersener]

We don't have enough information to make a comment about this. A single log line is not enough to understand who is throwing that SIGSEGV signal.

Consider adding console logs, the stack trace of SIGSEGV and a working command if you expect someone to investigate this. Your command includes ? characters.

[yeamin27]

Thank you for your quick response.

This is the only error message I got, no stack trace. As I am adding prebuilt SO files, that's why couldn't get any detailed stack trace. I have attached the google drive link of the sample file, can you please try reproducing the issue?

The ? character in the command is for FFmpeg to select a stream or leave if not found. I have executed the exact same command that I shared just replacing the INPUT_PATH and OUTPUT_PATH by respective saf parameters. Even if I use the same command to just re-encode in MKV it works. The crash occurs only when I change the container to MP4.

[tanersener]

The ? character in the command is for FFmpeg to select a stream or leave if not found.

When I try to verify your command on macOS, it fails with zsh: no matches found: 0:s?. I guess it interprets ? in a different way. You guys can try these things upfront and help us save some time.

This is the only error message I got, no stack trace.

logcat always include something more than just a single message. See #72, #120, #173 where other people shared native crashes for different scenarios.

test-app-maven-central uses full package by default, which doesn't include an h264 encoder. So, if I run your command, where you specify -vcodec h264, with it ffmpeg can't find a valid encoder and fails (no crash).

If I use one of the GPL licensed packages, which include x264 library, then I don't see any errors. See the logs.

[yeamin27]

I'm sorry for not providing enough information in the first place.

I was testing the from the build com.arthenica:ffmpeg-kit-full-gpl:4.5.LTS. But I got only this single line of stack trace that I shared in the description.

After your response, I upgraded the build version to 4.5.1-1.LTS and then the crash seems gone. So, I'm closing this issue. Thank you.