Bug with FFmpeg "Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000)"

[Lucy1342]

📋 Bug Description

Since the first days of January, I have been encountering an issue where some scheduled recordings are not saved after the broadcast ends.
During the live stream, the recording file does exist and appears to be recording normally. However, once the stream ends, the file is removed and no valid recording remains.

I attempted the following without success:

• Recreating the scheduled recording
• Changing the output directory
• Changing the output format

When recording with MP4/remux enabled, after the stream ends only a very small file (~261 bytes) is created instead of a valid recording.

💻 Operating System

Windows 10

🔄 Steps to Reproduce

No response

📸 Screenshots/Videos

No response

📁 Log Files / Error Messages

After comparing logs from correctly saved recordings with logs from failed recordings, I noticed that failed cases consistently include the following FFmpeg warning:

[mov,mp4,m4a,3gp,3g2,mj2 @ 000002c1a7b5f8c0] Could not find codec parameters for stream 1 (Video: h264 (avc1 / 0x31637661), none, 1920x1080): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options

In the failed recordings:

• FFmpeg does not detect valid video parameters
• No video or audio frames are written
• The resulting output file is empty or nearly empty

In contrast, recordings that are saved correctly do not show this warning and contain valid video/audio data.

Correct recording_TwitchLink_Download_2026.01.20_09-41-44#3c596c5b-afe8-42b8-ba3b-de1ed12a8b45.log

Incorrect recording_TwitchLink_Download_2026.01.21_08-30-39#9dee0c8b-e516-499c-b337-069a7c41d3f7.log

📋 Additional Context

No response

✔️ Confirmation

• I have checked existing issues to avoid duplicates
• I have tested with the latest version of TwitchLink
• I have provided clear context and sufficient information to understand the issue

[Lucy1342]

Tested with TS/concat encoder. Same thing but instead of 261 bytes file it creates full file that cannot be opened with any player. With that case it most likely file not finalized/indexed. After manual remux TS to MP4 using FFmpeg it works fine. Maybe this will help fix the problem.