[Android] Marathon getting zero-byte screen recording videos

[tabletenniser]

Describe the bug
Many video recording files provided by Marathon are empty have zero-bytes, as shown in the screenshot below:

Expected behavior
MP4 video files having the actual screen recording content

Logs and reports

Relevant logs that I can find (can upload full logs if needed):

09-29 15:01:11.968 516-559/? I/ActivityTaskManager: Displayed com.duolingo.devel.test/androidx.test.core.app.                                 InstrumentationActivityInvoker$EmptyActivity: +72ms
09-29 15:01:11.975 298-298/? D/goldfish-address-space: claimShared: Ask to claim region [0x3f9b8a000 0x3fa373000]
09-29 15:01:11.995 7226-7226/? D/MPEG4Writer: PreAllocation disabled. fallocate : Operation not supported on transport endpoint, 95
09-29 15:01:11.999 7136-7243/? W/GraphicBufferSource: released unpopulated slots: [3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,   19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,   54, 55, 56, 57, 58, 59, 60, 61, 62, 63]
09-29 15:01:12.017 400-400/? I/perfetto: probes_producer.cc:329  Producer stop (id=60)
09-29 15:01:12.018 402-402/? I/perfetto: ng_service_impl.cc:1948 Tracing session 60 ended, total sessions:3
09-29 15:01:12.088 7226-7226/? E/MediaMuxer: stop() is called in invalid state 1
09-29 15:01:12.091 7226-7226/? D/ScreenRecord: failed
09-29 15:01:12.092 7226-7226/? I/BpBinder: onLastStrongRef automatically unlinking death recipients: <uncached descriptor>
09-29 15:01:12.093 7226-7226/? I/BpBinder: onLastStrongRef automatically unlinking death recipients: <uncached descriptor>
09-29 15:01:12.094 7226-7226/? I/hw-BpHwBinder: onLastStrongRef automatically unlinking death recipients
09-29 15:01:12.103 787-809/? I/ndroid.systemu: NativeAlloc concurrent copying GC freed 11941(533KB) AllocSpace objects, 0(0B) LOS objects,    49% free, 5778KB/11MB, paused 35us total 251.913ms
09-29 15:01:12.205 3572-3631/? W/Settings: Setting always_finish_activities has moved from android.provider.Settings.System to android.       provider.Settings.Global, returning read-only value.
09-29 15:01:12.207 516-4626/? I/ActivityTaskManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER]          flg=0x10008000 cmp=com.duolingo.devel/com.duolingo.test.EmptyEntryPointTestActivity} from uid 10122
09-29 15:01:12.207 516-554/? D/EventSequenceValidator: Transition from ACTIVITY_FINISHED to INTENT_STARTED
09-29 15:01:12.214 516-4626/? W/ActivityTaskManager: Tried to set launchTime (0) < mLastActivityLaunchTime (171843)

Devices (please complete the following information):

• Device: [e.g. emulator/simulator/Nexus 5/etc]: Android Emulator
• OS: [e.g. iOS8.1]: Android 11

[Malinskiy]

Seems like a duplicate of #812 with the same underlying cause: the screenrecord binary failed

09-29 15:01:12.091 7226-7226/? D/ScreenRecord: failed

There isn't much marathon can do here short of a new implementation for screen recording.

[tabletenniser]

Got it, thanks for looking into it! We managed to bypass this issue by using screenshot instead of video screen record videos based off the suggestion from #812 which gives us .gif instead of .mp4. Feel free to close this if you feel appropriate.